📢 *_ Watch Part 2 Here (2021)_* : kzread.info/dash/bejne/fqOBx9uFlausYNo.html

@ThumbsupmusicNL

2 жыл бұрын

Does this also count for the production studio's? I recently bought a z5500 set for my music studio just to have another reference to listen to. I also have 2 old jamo 3 way speakers, 2 Krk 6se studio monitors and 2 little 10 dollar cube speakers.

@carewser

2 жыл бұрын

@@ThumbsupmusicNL I don't think many people would consider a Logitech 5.1 speaker system studio monitors although they're probably decent home theater speakers, the KRK's are studio monitors though

@ThumbsupmusicNL

2 жыл бұрын

@@carewser no I know they are not, I just think they are another reference to listen to. Expecialy the low end is very detailed

@carewser

2 жыл бұрын

@@ThumbsupmusicNL It should be, the Z5500's 10' subwoofer is the biggest sub Logitech's ever made. I've owned many Logitech speakers and they've all really impressed me with their bass

@jetsky226

11 ай бұрын

What about downfiring subs?

That acoustic wall pattern at the end of the video. Messing with my brain.

@AcousticFields

5 жыл бұрын

S, LOL, yes it was confusing.

This is very interesting.....I djed a wedding June 8th...i my set up was on top of a bar inside of a really cool barn....I was about 10 feet above everyone else I the room...and I tell you guys that sound resonanted like I have never experienced....bass was incredible..like you could feel it everywhere... possibly because subs where elevated....sound a lot different then my typical on the dance floor ste ups...this guy is def on to something!

@AcousticFields

6 жыл бұрын

D, Isn't it amazing the difference just a small physical elevation makes in low-frequency response. Moving away from the room boundary surfaces can have a large impact on all frequencies.

Great video, thank you

great vid!

Great video man! You earned a subscriber

I have 2 subs with 2 different sized cones (10" & 12") 4oo watt rms total], however , my room is only 10' X 10'; very small. As a result bass management becomes a huge issue so I raised them off the floor on thick foam cartons I had from packaging It made a big difference! the low freq. is no longer boomy and sounds really tight much like a punch to the mid section the detail is more pronounced and interaction between the higher freq. seems more in tune allowing me to hear things I've never heard before.

@AcousticFields

5 жыл бұрын

F, Yes, the smaller the room, the larger the impact.

Appreciated your brief but very informative presentation. Thanks.

@AcousticFields

5 жыл бұрын

I, You are welcome. Thank you for your support.

Thank you so much great information. I bought (2) 15” Wharfedale Subwoofers and used the thick foam that came in the box and I set my subs on top of this thick foam, about 3 inches off the floor.. And I also placed foam under the Subwoofers all around, at the front, in the middle and at the rear,basically to get them off the tiled floor, and add extra support and for the foam to actually be used as a cushion.. I personally think that this did help.. But it would be great also to take your advice and raise them much higher.. This is also beneficial because all that Bass will then hit you in the middle of your body, whereas if your subs are on the floor, the Bass waves are being lost ..

@AcousticFields

2 жыл бұрын

Raise the sub 18" off the floor.

I would of liked to hear more about the stand itself to what materials are better for lowering energy tranference

I tried this with my SVS PB-2000 Pros using my daughter's Lego table raising it about 20" and it made a world of difference. Just need to find or make something a little more appealing now.

Thanks for the advice! 👍 Never thought of this before.

@AcousticFields

2 жыл бұрын

Happy to help!

Great video, thank you so much!

@AcousticFields

5 жыл бұрын

T, You are welcome. Give it a try and report back to us.

Yes!!! Thank you!!!

And how about downfire sub like the Jamo A101 ? i've one and i have to put heavy things on the top the reduce vibration and carpet below

Thanks very much! cheers JB

Is very interesting your explanation thank you

@AcousticFields

6 жыл бұрын

R, Thank you for your support.

Woah super interesting. I never knew this .. Gonna try this today, I’ll be back with details

@AcousticFields

2 ай бұрын

Always keep any lower frequency producing device away from room boundary surfaces.

have a Samsung 2.1 CH 200W Soundbar with Subwoofer - HW-R450/ZC. took it off the floor and put it behind the Samsung 55" nu7100 Tv on my stand. Huge difference! thanks so much!

@AcousticFields

4 жыл бұрын

M, Never put a speaker behind a solid object. You destroy its radiation pattern and create more issues. Place it above the screen at an angle firing at listening position.

Thanks guy's, Just curious but I have 1 single 12" front firing Klipsch sub sitting next to my entertainment cabinet. Should I just do those rubber isolation feet? I could possibly build a little something to raise it off the ground but would look funny too high since it is firing back towards the tv viewer.

If I cut pvc pipe 6” high 5 of them one for each corner and one for the middle would that work for my paradigm box sub

Ive learned alot.. Thanks Sir.. How about playing on a live band, and if the subwoofer is on stage? Is that considered not on the floor? Thank you

@AcousticFields

4 жыл бұрын

I, That's a different paradigm. Sound reinforcement in larger venues is all about distribution into the room space. A sub on stage is better than a sub at ground level

Hello, if you can, please guide me in setting up my first 5.1 surround sound system(samsung htj4500). Room dimensions: 10ft x 12ft x 9f I have a 47 inch TV on the 12ft wall, dead in the centre & it is 41 inches from the wooden laminate floor. Where would be the best place to place my speakers and subwoofer? I have seen a few set ups where the 4 speakers habe been hung in each corner, facing each other diagonally, at around halfway up the wall, is this a good way to do it? A friend advised me to hang the 4 speakers in each corner BUT right at the top by the ceiling, is there any substance in what he advised? From my research I have assumed to place the tweeters to the side of where I am seated and the front speakers next to the TV, around 6 feet apart, and the subwoofer on the floor. Any advice will be welcomed.....specific height/width etc will be appreciated.... what would you place your subwoofer on?

I have a M&L sub with the option for front or down firing, in a small room. I'm trying to get the best LF sound with the least complaints from the neighbors. Any advice would be great. Thanks for all the info!

@AcousticFields

7 жыл бұрын

Hi Mike, You have two options, each with their associated costs. You can build a barrier between the sub and your neighbors. This process involves measurements, materials, and construction. It is a permanent fix and costly. Materials and labor can exceed $40/sq.ft. Your next option is to place sound absorption technology close to the source. Here are links to our carbon technology that has the required horsepower to deal with low frequency issues. The first is our DIY build plans for our diaphragmatic absorbers. You can build our technology yourself. The next links are our production units. You will need multiple units no matter what option you decide: www.acousticfields.com/product/diy-bass-absorber-build-plans-bda-broadband-diaphragmatic-absorber/www.acousticfields.com/product/acda-12-studio/www.acousticfields.com/product/acda-10-mini-studio/

Never throught about this, but i was suprised to see that its good to raise it. Can you show how you have raised the subwoofer?

@AcousticFields

4 жыл бұрын

E, We use our carbon platforms. Go to products section of web site.

Totally agree with that Have my system in garage.complete with throw rugs on floor Had just book shelf speakers then .got a good deal on used sub. (Not a believer in subs.until now)Everything is up of the floor 8 feet.sub in middle on storage shelf . Set low at 50hz.low volume. And it just opened the the whole sound field. You dont notice the sub. I should have had one 30 years ago. Hmmm thinking of #2 now

@AcousticFields

5 жыл бұрын

J, Yes, I get emails every day from people who have elevated their subs and have similar results.

@commentcommenter3529

5 жыл бұрын

JS B Try hanging them. I have mine hanging by steel cables. Great decoupling and great sound stage and sound fields are revealed

@jimmyFX

5 жыл бұрын

@@commentcommenter3529 always open for new ideas. I want to bring my speakers further from wall. Hmmm yeah hanging sounds like a good idea.(I didn't want to make shelf deeper).thanks for the tip👍👍

Do any of your suggestions change when you have a bottom firing, or in my case, a bottom ported sub? It would seem that perhaps you would still want to decouple, but raise on stilts at the feet so the port is less obscured?!

@AcousticFields

5 жыл бұрын

Y, Raise the sub from the floor no matter what direction it is firing.

Very informative video, thank you. Quick question regarding larger subwoofers, I have 2 18" subs in a room that's around 9m long x 5.5m wide and 2.5m high. I was thinking to have each sub elevated but to different heights, what would the height difference between the subwoofers have to be for effective energy dispersion in the room? Thanks in advance.

@AcousticFields

7 жыл бұрын

H, use 12" and 18". Your ceiling height is your issue. You have good length and width but your ceiling height creates unwanted pressure issues throughout the whole room length and width.

@AndrewHadi07

6 жыл бұрын

i ha a room width of 6 m x 8 m x 2.5 m (height). can i elevate my subwoofer by 18" ?

Great advice .

@AcousticFields

6 жыл бұрын

Mr, The frequency response curve of your room depends upon many variables. One of those variables is the position of the low frequency generating source which is your subwoofer. We have two in our studio. One is 18" off the floor, the other 24"

I have my subs about 50cm above the floor (to centre of driver). Better room response I think. Plus there are 2 of them :)

@AcousticFields

6 жыл бұрын

R, If the room is rectangular, place on both short ends. Start with mid wall positioning at least 4' from wall surface area. Move towards room center for tuning. Move in 2" increments, one at a time.

That is so true sir! I got two powerful custom made 10" sub...been re-place them and re location them for up to 2 yrs now....still the best spot to place them were the weirdest spot ever...only on that weird spot I got transient response and clean bass with minimal room modality....my tiny subs does sings along with 60hz boomines if I fed 30hz signal to it...that situation happen when I spread that 2 subs sitting beside main left and right tower spkrs...then I tried placing them like this...no1 sub sitting behind my tv/center channel and the other one I left it sitting side by side with my left tower spkr...boom! I got even pressure and minimal modes...low freq sound goes audibly clean and tight...not like before where I can just feel the bass pressure but can't really heard it hitting my ear...I can feel my couch shaking and vibrating but my ears didn't catch any tight impactful bass sound....maybe next time I'll try to lift it frm the floor as you suggested in the video...thank you sir! I thought my room were the only one that is weird in terms of subwoofer placement...this answers me much...thanks

@AcousticFields

6 жыл бұрын

M, Low frequency producing devices must be carefully placed in any room size/volume /usage.

@1019wc1019

5 жыл бұрын

When i have two different sizes of speaker and placement playing the same frequency it helps to change the subwoofer phase either in your amplifier or on the back of the sub itself. It helps keep them from creating an out of phase effect. This doesnt always achieve better results depending on the room and the placement.

@Krupnoklipac

5 жыл бұрын

If you want to avoid ears impact, just change the polarity of 1 sub.

How about angling a subwoofer upwards to the listener position like you would for other speakers? Would that achieve the same thing as putting the subwoofer at different heights?

@AcousticFields

5 жыл бұрын

J, I would not recommend it. The floor to ceiling dimension is the smallest of the three.

Hey great video, how would this work or how would you set up a sound system in an outdoor event?

@AcousticFields

5 жыл бұрын

M, We do not have experience in this area. We are a small room acoustics design and manufacture company.

@abielpangga6314

3 жыл бұрын

for outdoor events, it is better to put your sub on the floor and you get extra free gain, and better if you corner load the sub

I simply hot-glued a few rolls of electrical tape together and attached them to the bottom of my sub to decouple it from the floor, which is concrete covered with carpet. Works fine for me for a total cost of less than $5.

@AcousticFields

5 жыл бұрын

T, Yes, using a viscoelastic damping material such as electrical tape is one method of reducing noise transmission from a speaker to the contact surface. There are many others with varying degrees of effectiveness.

@FriedAudio

5 жыл бұрын

That's actually a very good DIY idea. Kudos!

@commentcommenter3529

5 жыл бұрын

Tony W Try hanging them by steel cables. Best decoupling, greater soundstage than just mounting it. Of course the best listening position is also hanging by cable. Works for me though. 😀

My SVS subwoofer is coupled directly via spikes to the concrete slab beneath the carpet, properly leveled and therefore no wobbling. On top I put a 12" x 12" 1" thick granite slab. Will an isolation platform make the subwoofer sound better?

@AcousticFields

2 жыл бұрын

Raise the sub 18" off the floor to start.

Thanks for the 12in off the floor tip, my subwoofer sounds better now

@AcousticFields

5 жыл бұрын

J, Go to the highest building in your neighborhood and shout that out. LOL

@mr.blackhawk142

3 жыл бұрын

I've got 12" but I don't use it as a rule! :P

What about subwoofers built into floor standing speakers, or down-firing subwoofers designed to be used on the floor? I have a Velodyne 12 DDS that produces rattles much worse in the cabinet than on the floor.

@AcousticFields

6 жыл бұрын

R, All vibration producing devices should be decoupled from the surfaces. If you can then add absorption to the isolation process you have two reasons to do this.

Do you advise against down firing subs for wood covered concrete floors in a small room?

@AcousticFields

2 жыл бұрын

Lets think through your question. Why would we want to fire a device that produces 20 - 40' long waves of energy into a corner or floor?

If I am building a drum decoupled riser with U boats, what size wood do I use 2*4, 2*6,2*8, and can I use mdf for the top of it and can I use 1/2 Inch MDF or do I need 3/4, Basically how do we properly build a decoupled drum riser for a double bass drum set, My acoustician is telling me to put it on rollers but I am currently building it on rubber pieces.

@AcousticFields

4 жыл бұрын

T, Neither will do the complete job. Use a platform that was designed to manage the "double" low - frequency energy sources with the kicks. Here is a link to our drum platform: www.acousticfields.com/product/drum-platform/

Great advice.thx

@AcousticFields

4 жыл бұрын

R, Elevate, Isolate, and Attenuate. You can do all three with one platform. In acoustics whenever you get a chance to treat 3 variables in one platform, you must do it. You may never get another chance.

I just finished insulating my home theater. The walls are double 2x4 walls with gap between the walls and r-13 in one wall and r-21 in the interior wall. The room is 20x20x10. Are there any problems associated with having this type of setup that I need to consider as far as reflections or needing bass traps etc.?

@AcousticFields

2 жыл бұрын

The barrier you built will not stop frequencies below 125 hz. You will need 50 - 65% surface area coverage on all 4 walls to start for low frequency management.

what if the sub is dual drivers in opposite direction, is it better to eliminate the vibration ?

@AcousticFields

8 жыл бұрын

Hi Muataz, The operative word here is minimize. Dual drivers do minimize vibrations and other internal cabinet resonances but never eliminate. Driver movement will produce speaker cabinet resonances from one or two drivers. That internal driver movement along with the internal cabinet resonances or modes (cabinets are really small rooms) need to managed with the proper treatment technologies.

So if you have one subwoofer and found the sweet spot in the horizontal plane, would elevating it change the nature of the sweet spot ? In other words can I elevated the subwoofer at the sweet spot and it still remains the ideal location even though its been elevated ?

@AcousticFields

9 ай бұрын

Three are 3 soundfields that you must satisfy. You have sidewall to sidewall, front to rear wall, and floor to ceiling. Elevating always improves floor to ceiling soundfield.

I did put rubber under each foot on the sub, and I heard clearer bass and mid range immediately. Actually they were quite cheap. Only about 15 dollars of treatment per speaker. And I have wodden floor, so all speakers must be decoupled from the floor.

@AcousticFields

5 жыл бұрын

O, Yes, isn't it amazing what a difference it makes. Now, elevate your sub 12" and use low-frequency absorption under it. This was the design impetus for our subwoofer platform. www.acousticfields.com/product/subwoofer-platform-absorber/

@100rabhpradhan

Жыл бұрын

I have Italian marble flooring. Would I benefit from the rubber pads under the sub feet? It's a downfiring subwoofer.

Hi, great video. Does this advice hold true for down firing Subwoofer? I have an old REL Quake sub with the speaker that points directly down to my floor.

@johnpoo1662

4 жыл бұрын

Just put it on some sorbothane hemispheres and they will absorb all cabinet vibrations.

@Gamez4eveR

3 жыл бұрын

My HS8S definitely improved when I lifted it iff the ground, so I'm gonna go with a hard yes

Wonderful, I give you a thumbs up. However, if what you say with your theories, and practicality are true, and logical; why is it that expert, higher quality, high performance manufactures not designing, and building subwoofers this way? Thank you very much for the advice, and very practical tips, procedures. Anyhow, I only need one subwoofer, and am going to follow your sound advice; pun just happened to be there. Also, vinyl is final.

@AcousticFields

5 жыл бұрын

G, Its easier to set a sub on the floor for manufacturers. Its also safer from a liability issue. Raising a sub off the floor will always improve room response. We have subs in our studio and all are elevated.

Thanks for great info! If I want to set my sub on diaphragmatic absorber, does it mean that I have to put it on absorbers front wall or on its side or back? Does it matter?

@AcousticFields

7 жыл бұрын

Hi Daniel, Subs radiate energy from all of their surfaces. Absorbing excess energy close to the source of that energy using pressure reactive technology reduces energy levels before they are released into the room. Once in the room, they mix with the dimensions of the room. That is when you get your modal issues.

@AcousticFields

4 жыл бұрын

D, You must locate the frequency response of the treatment against the frequency response of the wall issues. Every room size and volume is different.

What about subs with dual opposing active driver?,I understand this video is from 2016 and we are 2020,I just purchase dual opposing seal subs they don't vibrate...is this ok on the floor(rug).thks

@AcousticFields

4 жыл бұрын

B, You will improve room response by elevating, isolating, and attenuating energy as close to source as you can.

What kind of material would a 12" platform be made of? Plywood with rubber type feet/isolators.

@AcousticFields

4 жыл бұрын

P, Here is a link to our sub woofer platform. We custom build to height width and depth requirements of speaker. www.acousticfields.com/product/subwoofer-platform-absorber/

In my room, an SAE A501 powers my 2 double 15" G sub's sitting ona 4"platform. The subs also sitting on 4" isolation foam behind my DIY 108" Harkness acoustically transparent screen. Is this adequate for a seating distance of 12ft away

@AcousticFields

4 жыл бұрын

P, There is no such thing as an acoustically transparent screen. Two things happen when you place a screen in front of a speaker. First, certain frequencies are attenuated based upon screen material and thickness. Secondly, the dispersion array of the high and middle frequency drivers is distorted. There is no free ride in acoustics. I would have to know much more about your room to assist you with speaker positioning. Give me WHL.

Do u need a dense stand of 12, 18 or 24 inch or can u put it on a table? Putting on a table is better than the floor (in the case of you dont have the stand)

@AcousticFields

3 жыл бұрын

Table better than floor if table is solid. Give it a try and report back to us.

Does the QSC 212 Cardiod sub mitigate these vibrations somewhat? As far as I can tell it mitigates the rear but perhaps the energy gets to the floor. My senses tell me no... I can place a laptop or anything on that sub even when its placed flat on the floor and there are almost no vibrations in the cabinet whatsoever even run at near unity (3200 watts). Does this mean the energy is mostly traveling directly out the front ? All other sub cabinets I have experienced vibrate.

@AcousticFields

3 жыл бұрын

Energy from any low-frequency device radiates out from all surface areas and is omnidirectional.

i have a 8 inch 120 watts subwoofer but on what height should i place it and should i place it under my desk?

@AcousticFields

7 жыл бұрын

Hi Sebas, I need to know much more information about your room. Go to the room form link and fill out the data required so I can better assist you. www.acousticfields.com/free-room-analysis

Hi, thanks for the infos... i already have a mini line array (db es1203) and i put the sub on the floor....well, this thing is pretty damm heavy.... and im looking to buy a transport dolly (they sell a kind of) or a flight case. My question is...If i use my sub over a dolly/ or case w/ wheells, will work like you`ve showed on the video? thanks again and a huge hug from Brazil.

@AcousticFields

4 жыл бұрын

A, Use whatever methodology you have available to elevate the sub. Report back to us on your findings.

Very informative vid. Question from an audiophile/physics major.... should I wrap my sub the same diaphragmatic material i use to lift off the floor to help prevent energy from getting into the corners (it's in a corner under a small table in my room due to space issues) Also.... would doing this in my trunk help stop resonance through my car from my car's subwoofer?

@AcousticFields

5 жыл бұрын

L, Yes, any reduction in vibration transmission will improve definition.

@d0nj03

5 жыл бұрын

If that reduces the sub's output at all frequencies you might as well just turn down the sub's volume instead. If it's highly frequency-selective material you could achieve its effect via EQ. The point of bass absorption is to tune the room, not the sub itself, and that's why it's normally placed at specific hotspots in the room, not on the sub.

@Harald_Reindl

3 жыл бұрын

@@d0nj03 no, you absorb as nearly you can go to the source and it is not the same as lower the volume - it is a matter of physics

what about concrete slab floors? surely the sub isn't going to vibrate that?

If you are using woofers instead of subwoofers a 1.5-3 inch sheet of polyfill insulation may be enough cushion for your sub boxes. I’m am going to treat mine with this method and i’ll let you know the outcome. I may also try thick rubber workout matts with a layer of polyfoam.

@AcousticFields

Жыл бұрын

Polyfill insulation material type will not provide vibrational management at the required frequencies, let alone with the amplitude of a sub.

Please tell what is the good place to keep subwoofer for deep bass

@AcousticFields

4 жыл бұрын

K, You must consider many variables. You must look at operating pressure levels, number of drivers, diameter of drivers, room dimensions and total volume.

Yeah what do you fill the empty space in your plugs into your son I have already put a box underneath my son and I have sand in it and it seems to absorb quite well you might have a better suggestion please let me know or let us all know 2 in sold wood embrace the interior cabinet walls

@AcousticFields

2 жыл бұрын

Sand minimizes vibrations from the cabinet to the floor. It is not a sound absorption technology. It is a barrier material type.

The floor and the wall add their own influence to a subwoofer's sound. If you minimize this effect by putting some distance between them, the subwoofer will have a purer and less influenced sound. He also trying to control the pressure fields in the room and put them in a more advantageous listening position. These are some helpful suggestions on ways to tune the acoustics in a room. Don't discount them as a little difference, a sub raised 12 inches higher will nave a noticeable different sound. But not necessarily better; this all depends on your set up and what you like.

@AcousticFields

5 жыл бұрын

W, Thank for the clarification. It is a clearer way of understanding the process. In the over 100 rooms we have measured using an elevated, low-frequency source, we have found a smoother response curve below 100 Hz. in 90 % of the rooms.

Would you recommend hanging the sub? It could be placed on a hanging platform attached to the ceiling with ropes...

@AcousticFields

3 жыл бұрын

Let's unpack this issue. First, before we consider an installation methodology, let's find the proper location. Once we locate the location, we can then decide how high to make it within the floor to ceiling height. This measurement process is a bit complex to determine sub height.

I put it on my desk, its even lifted from the desk with a stand.. helps soo much! On the floor the bass is so muddy and boomy. On the desk the kick is very punchy and overall it sounds more clean

@AcousticFields

5 жыл бұрын

D, Climb to the highest mountain and shout this out to people.

Thank You :)

@AcousticFields

6 жыл бұрын

M, You are more than welcome.

I have a JBL studio monitors (8 inch drivers) setup with a 12 inch powered SUB with the cutoff set at 80hz , it clearly says in the manual to put the SUB directly on the floor with nothing under it. I did put some DIY 1 inch rubber spacers under the feet to minimize vibrations and it has not changed the sound for the worst. So why are manufactures so against putting something under the SUB feet ?

@AcousticFields

5 жыл бұрын

J, It is probably a liability issue. They want you to use their "feet" and also keep it close to the floor so you get more quantity than quality.

Due to shortage of rear speaker wire length I have to put subwoofer in middle of the room on floor. Is it ok or I have place at corner only? Is there any difference in base due to that positioning? Please advice.

@AcousticFields

Жыл бұрын

How does it sound? Stay out of the corners and away from the room walls.

This video made the single biggest approvement to my Dolby Atmos system. Thanks Dennis!

@AcousticFields

4 жыл бұрын

D, Tell us more.

Does the same apply for a Sony SA WX700 Dual 10" Push And Pull Subwoofer? Alsonif i have two of them, do i need to have them a different Heights?

@AcousticFields

6 жыл бұрын

E, Yes, start with 18" for one and 24" the other. Here is our sub platform: www.acousticfields.com/product/subwoofer-platform-absorber/

@Redmed427x

6 жыл бұрын

Excellent subwoofer for the price, got mine many years ago and it's still pumping out clean bass!

If you have only one sub. Is there an ideal distance from floor? Is 24 inch always better than 12 inch?

@AcousticFields

5 жыл бұрын

O, The taller the ceiling height, the higher the sub can be. Start at 1' and try that height for an 8' ceiling.

Nice video and very informative👍 but if you have them on carpet you should be ok, as carpet has rubber padding on the bottom.

@mahumike7531

5 жыл бұрын

i wish i knew if that were correct. it doesnt seem to be to me, to be frank

@AcousticFields

5 жыл бұрын

H, Padding and carpet minimize vibration signatures. It does not have any impact on room frequency response.

I am constantly receiving complaints from my neighbor in townhouse complex. To dampen vibrations from my Bose subwoofer, is it sufficient to raise it up 2 1/2 ft above the floor onto a 5 inch cushion on window seat? Thanks.

@AcousticFields

3 жыл бұрын

Give it a try and report back to us.

Thanks for the valuable info. I have polk psw125 12" down firing sub in the corner of living room (12'x20') and ceiling 11', can i elevate the sub at an height of 2 feet or 3 feet and may i place rockwool (upto 10" deep) as a diaphragmatic absorber below the sub?

@AcousticFields

7 жыл бұрын

Hi V, Rockwool by itself is not a diaphragmatic absorber. It is a fill material that can be used to manage internal cabinet resonances within a diaphragmatic system. It is a fill material that is toxic. Elevating a low frequency producing device off any surface is always a good idea. Experiment with different heights for your room size and volume.

@vaasukotha3879

7 жыл бұрын

Acoustic Fields thanq

How do you elevate them 12-18 inches? What’s recommended? These are informative thank you!

@AcousticFields

4 жыл бұрын

T, We have subwoofer platforms that are on casters for easy positioning. We can build them 12", 18" and 24" high. What is your ceiling height?

@Travis2L

4 жыл бұрын

Acoustic Fields 8 Foot ceilings

@AcousticFields

4 жыл бұрын

T, You can use a 12" platform. www.acousticfields.com/product/subwoofer-platform-absorber/

How does this apply to a sub with a port in the back and face of sub is on side of the box?

@ddg227

4 жыл бұрын

I turned mine facing the listener, so the speaker side projects toward me. The wave goes everywhere though as he said in the video.

Would it be degrading to acoustic quality if subwoofers were tethered to the ceiling, like hanging by cables?

@AcousticFields

7 жыл бұрын

Hi Skizzarz, Yes, isolation from any surface with a vibrating low frequency device is always welcome . I have built home theater rooms where the sub woofers are on winches and lower from the ceiling and arrive at different calculated heights when extended. The cables isolate from structure and the varied heights smooth out response. I was also able to sync the movement of the subs, screen, and window shades so everything moved in unison. I have also built rooms where a flat ceiling will open up by splitting in the middle and each section pulled towards the side walls to form more volume for theater applications.

@skizzarz

7 жыл бұрын

Interesting, thanks for the reply!

i just took the bluetooth boombox that i just posted on my channel and faced the 4 front facing mini woofers into the floor on a wood floor(carpet) and it seems like 3 times more bass im not kidding....any comments or recommendations

Thank you sir....

@AcousticFields

6 жыл бұрын

D, Appreciate your response.

Do you have a preference of sealed for 2 channel critical listening situations? Or do you think the debate of ported vs. sealed is a moot point?

@AcousticFields

8 жыл бұрын

Hi Ram, With sealed units you have just cabinet materials , construction methodology, cabinet volume, and driver diameter producing the sound you finally hear. With ported, you have all of the sealed speaker components plus the port producing sound. Getting "port" sound to sound good is not an easy task. It all depends on the engineer's ability to get port sound to blend with the rest of the cabinet. I have not heard many ported speaker designs that can accomplish this feat.

@Krupnoklipac

5 жыл бұрын

The best effect you can get is when u turn ports against the wall. Sealed always in the corner.

@aledamatoc

5 жыл бұрын

@@Krupnoklipac Hi, I've just seen your comment, and I'm re designing my living room and trying to anticipate the best placement for my Rear ported (12 inch sub). So you say I should place it against the front wall close the the wall? my options are quite limited, it could be there, or in a lateral wall but not my favorite place to put it. thanks for any feedback!

@Krupnoklipac

5 жыл бұрын

@@aledamatoc Test it. I always turn ports against the wall and in the corner.

But I habe no diaphragmatic absorption stands. Can I use normal speaker stands for my sub?

@AcousticFields

4 жыл бұрын

R, Yes, elevate the sub 12", 18", and 24" and report back to us on the sound quality improvement.

All I know is after installing 2 iso pads for my duel subs, to me it sounded way better than before and less unnecessary vibrations.

@AcousticFields

5 жыл бұрын

R, Yes, you are correct. Reducing the noise transmission from the sub to the floor is always good. Now, raise it up another 12".

@Krupnoklipac

5 жыл бұрын

If you sit on a couch , raise the subs on the height of your head. The frequency will hit your head even harder

@Engineer9736

4 жыл бұрын

Kukuruz Krupnoklipac Which frequency? There is 20hz to 100hz in a sub. Or you just mean the sound.

How about downfiring subs? Kindly elaborate more on this. Thanks.

@dustintrombly

3 жыл бұрын

Kinda an educated guess, but every visual diagram I've seen of bass dispersion patterns shows it going in every direction in almost the same amount, so I don't think that changes anything/much.

@Harald_Reindl

3 жыл бұрын

nothing about, it's the same

How should I place the subwoofer in a home studio setting?

@AcousticFields

3 жыл бұрын

N, Start with room center and move left right front back at 12" intervals.

What would you recommend for a down firing subwoofer sitting on hardwood floor?

@AcousticFields

5 жыл бұрын

J, Elevate, attenuate, isolate. Raise the subwoofer at least 12" off the floor, choose a platform that absorbs energy at the correct rate and level, and isolate the vibrations from the floor. Our subwoofer platform does all three functions. www.acousticfields.com/product/subwoofer-platform-absorber/

@MichaelLevitt1

5 жыл бұрын

Try Turning the sub on it side so driver faces you? play with the room location and phase. I just did this with a rel quake and it end up sounding best on its side, on top of speakers kef 102 on stands, aprx 5ft from the floor.

If I lift my two subwoofer from the floor my wife will put them on top of my head.

@AcousticFields

5 жыл бұрын

J, That's a topic for another channel.

@commentcommenter3529

5 жыл бұрын

I placed my subs infront of my dick.

@Impac21002

4 жыл бұрын

@@commentcommenter3529 LMAO!!!

@giuliano8031

3 жыл бұрын

@@commentcommenter3529 Does that hurt?

@redscorpion9325

3 жыл бұрын

😂

Great video's top tech. However. What about down firing subs - they're designed to be floor coupled. One big point - spikes don't isolate, they couple!!

@AcousticFields

2 жыл бұрын

Spikes are vibration reducing technologies. They minimize the transfer of vibrations from the sub cabinet to the floor. Set your sub on a technology that does three things. First, they absorb low frequency energy. Secondly, they act as a vibrational barrier between sub and floor. Finally, a platform will elevate the sub from the floor which will assist with the first two objectives and improve room response. www.acousticfields.com/product/subwoofer-platform-absorber/

Hi Denis, thanks for informative vids you're making! I have a specific question about Yamaha HS8S sub - as it's speaker is faced down directly to the floor, should i consider to place the sub on some pods or smth to put the speaker away from the floor? Will appreciate your feedback!

@AcousticFields

7 жыл бұрын

Hi Victor, It is always a good idea to isolate all vibration producing structures from each other, especially a sub woofer. It is also a good idea to raise the sub off the floor at least 12" - 18". You can also add low frequency absorption into the isolation system.

@Krupnoklipac

5 жыл бұрын

You can also set to 50hz low pass filter to avoid "kick" sound.

will a subwoofer aurolex pad stop my windows from vibrating?

@telimarkskierman

5 жыл бұрын

Nope. It's the sound waves that are vibrating the window, not the physical speaker.

First time I heard this idea I will need to try it. But my first concern would be if the sub is higher up won't it affect the channel separation from the other speakers?

@AcousticFields

3 жыл бұрын

Low-frequency energy is omnidirectional.

@zombeat7376

3 жыл бұрын

@@AcousticFields yes that's right. But if that's the case should it matter if the sub is raised from the floor? I will try it but just not sure how to raise it. My sub is mordaunt short mezzo range it has two big bass speakers facing out opposite directions. Just need to figure out how I am going to rise it up. I mean I am going to have to use something that doesn't rattle 😂

@zombeat7376

3 жыл бұрын

@@AcousticFields p.s my floor in my main room is a stone floor so there are no vibration on my floor.

@Harald_Reindl

3 жыл бұрын

@@zombeat7376 the point is minimise the energy to the floor which is transmitted over the floor to everything else in the room - you want to minimize any vibrations and that way you do it at the source of the problem

If you need to use 12" of isolation to decouple, your subwoofer is crap. Cabinet vibrations are tiny compared to what the airpressure has. I agree than adding absorption directly under the sub is neat and logical but it is not for isolating the actual cabinet; 5mm worth of rubber will do that just fine. We only need to dampen the high velocity impacts that happen when a slightly vibrating rigidbody is bouncing on top of a static solid object. As for absorption directly under it, it is good advice.

@AcousticFields

8 жыл бұрын

Providing low frequency absorption, vibration management, and room position are the objectives. A 12" depth in a diaphragmatic absorber will ensure absorption in the 30 Hz. frequency range. This absorption feature is also present with vibration signatures through solid surface noise transmission using our carbon technology.

@WesLott3rd

5 жыл бұрын

The floor and the wall add their own influence to the subwoofer's sound. If you minimize this effect by putting some distance between them, the subwoofer will have a purer and less influenced sound. He also trying to control the pressure fields in the room and put them in a more advantageous listening position.

@juststuff5216

5 жыл бұрын

I kinda have to agree .There are plenty of knowledge acoustic engineers that seem to forgo the $750 for the *Sub Woofer Carbon Platform SWCP* And the enclosure just has to be made with half an ounce of care !! kzread.info/dash/bejne/pJ9nz9mygru4mso.html

@oysteinsoreide4323

5 жыл бұрын

The direct decoupling is only so that the vibrations of the sub is not transfered to the floor. 12 is much for that, It can be decoupled with far less than 12 inch.

so great ld like to see more

@AcousticFields

7 жыл бұрын

Hi Emerald, Thank you for your support. Lets us know any topics you would like covered.

Does the Diaphragmatic absorber have spikes for feet? ;) Love your channel! ❤️

@AcousticFields

4 жыл бұрын

N, They weigh 230 lbs each and are on casters.

Friend of mine placed gaia feet underneath, you can put a coin on it's side on top and it won't even move. I love those things.

@AcousticFields

2 жыл бұрын

Vibration transmission requires separation of vibrating source and the receiver of said vibrations.

@CyberBeep_kenshi

2 жыл бұрын

@@AcousticFields seems to work well then :)

Hai my room is so small where else is suitable to place the subwoofer on the floor or desk

@AcousticFields

2 жыл бұрын

Elevate, isolate, attenuate.

@nazmiaizuddin96

2 жыл бұрын

@@AcousticFields if the soundbar sonicgear BT2100 Which suits me to place

Does it have to be the middle speaker.

@AcousticFields

3 жыл бұрын

No, it must be positioned to minimize sub/room interaction.

I once mounted a 15 inch sub above the center channel on the ceiling and it hit harder than any other place in the room...

@AcousticFields

5 жыл бұрын

V, Yes, the location of any low-frequency source is critical.

For my PC setup, can I place my downfiring subwoofer on my desk?

@AcousticFields

5 жыл бұрын

J. Why would you want to subject your computer and electronics to vibration transmission.

@justinlion6451

5 жыл бұрын

I already have the PC on the desk directly above the subwoofer and haven't had any issues. I was trying to raise the subwoofer height using the room environment. I can't raise the subwoofer under the desk as it'll hit the desk. I thought a solution might be to place the subwoofer on the desk underneath some foam.

DO ISOLATION PLATFORMS WORK WITH DOWNFIRING SUBS SUCH AS REL T9X?

@AcousticFields

2 жыл бұрын

With a sub platform you want to do three things. First, you want to elevate the sub off the floor. How far depends on ceiling height. Secondly, you want to absorb excess energy from the sub cabinet. Thirdly, you isolate the sub from transmitting more vibrations to the floor. Our sub platforms satisfy all three objectives. www.acousticfields.com/product/subwoofer-platform-absorber/

@markusganzherrlich

2 жыл бұрын

@@AcousticFields Thank you, If you're interested we might test and make a video review of one of your isolation platforms.

down front side dual all the same?

@AcousticFields

4 жыл бұрын

P, I do not understand your question. Please explain.

Hi ! I have mine on the floor, in the corner of the room. What would be optimal ? Put it on a chair and closer to the middle of the room ?

@AcousticFields

2 жыл бұрын

Never place a low frequency energy source in the corners of any room. All you are doing is creating more room distortion. Start at room center and move 12" right then left. Move back and forth. Spend time listening at each position change. Elevate the sub off the floor by 18". Report back to us the initial results.

@Vaampe

2 жыл бұрын

@@AcousticFields Wow! it really made a huge difference just moving it around and listening. Im baffled. I can honestly say the sound is probably twice as good, as compared to before *while having it in the corner). I had no idea it would effect the sounds that much. Thanks alot you really saved me :D !!!

@AcousticFields

2 жыл бұрын

@@Vaampe Climb to the highest mountain and shout this for everyone to hear.

Whats the 12" structure ？

@AcousticFields

7 жыл бұрын

Hi A, The goal of any low frequency device is to raise it off the floor and to minimize floor to sub woofer contact and reduce surface to surface vibrations. Second, we want to absorb as much energy as possible, as close to the source as we can. Both of these objectives can be accomplished using our sub platform. Here is the link: www.acousticfields.com/product/subwoofer-platform-absorber/

I'm short of room, could I hang it from the ceiling?

@AcousticFields

4 жыл бұрын

W, We have used that method.

@ruvimg

4 жыл бұрын

Is there a massive difference between putting subwoofer on floor properly to hanging them properly from the ceiling?