Very nice. Looking forward to your Audyssey video!

Thanks a lot....i had given up on using WinISD it was confusing.Now i have seen the light...👍👍

Been looking forward to this

@hometheatergurus

4 жыл бұрын

Yeah it's been crazy around here. I should have had this out a week ago.

Yes ported can get lower but the phase shift is extreme at the Port. Sealed sub phase shift is gradual. Proper loading will bring the deep base up or you can overdrive the sub if it has a good Xmax.

great video

Thank You. I was having terrible time, always getting RED BAR of integrity check failure. Now it's green!

Very good!

Good vid if you apply signal to to this set up how would cone excursion look?

Love all your videos. I do have a question about winisd. Wondering why you don't enter the value for the series resistance after you added the power? When I put it to 4 ohms it really changes the graph. I don't understand why it is left at .1 ohms. Your feedback will be much appreciated.

I'm following along your video and using UM18-22 (two enclosures / one 18 per enclosure) for my project. I have available space to accommodate enclosures larger than the Standard Full Marty with the space behind my AT screen. Any reason to not design a huge box vs. the 11 ft³ Full Marty? Playing with WinISD: ex. 11 ft³ Full Marty volume, tuning frequency @ 14.43 Hz, signal 1,000 watts - I'm configuring it with a square vent 2.5"x22" and the velocity is almost off the chart (62 ft/s at 14.4 Hz). I'm running iterations of vent height to drop the velocity, but the vent length becomes too long (+58"). Can you recommend changes that will bring this inline with your recommendation of ≤ 30 ft/s. What is the vent area & vent length for the Full Marty and what are Box dimensions for a FM? Curious how that vent is configured in a FM. I understand there are some 'rules of thumb' for driver placement in the enclosure relative to the external port and port opening inside the enclosure relative to adjacent surfaces. Can you touch on this? Thanks for putting this together. This is exactly what I needed to get working on this project. Wife getting tired of seeing drivers sitting in their box. :-)

Thank you for the tutorial. I downloaded the program, and put in every parameter that you did, but my cone excursion reading, and rear port air velocity is off the chart. Also I don't get hz, and db on the readings. I get rel hz and rel db. I think I need to reload the program because I'm getting completely different readings than you did.

Great tutorial. I like how you discuss the various trade offs for different properties. You mentioned box stuffing. Is that more of a trial and error thing or can you calculate how much stuffing to use. Do you always use stuffing? Will you discuss adding damping material to take care of box standing waves or is that just for speakers? Thanks professor!

@hometheatergurus

4 жыл бұрын

Yeah I glad you brought that up. We don't have standing waves because our subwoofer frequencies are so much larger than the enclosure but we still line with insulation anyways. With sealed we lightly stuff not line. With sealed There's a loose rule that every pound of fill increases the enclose by 25 percent so you could guesstimate it by modeling the box in winisd with that in mind.

Amazing tutorial! I was wondering if you have experience with Aperiodic vents and if this can somehow be accounted for maybe with the passive radiator option in WinISD? Also any tutorials for crossover design?

I’m looking to build a behind the couch wedge enclosure in the living room (high WAF) 5.5cuft ported tuned 20HZ. Is that too big for the UM12 or is there no such thing as too big an enclosure? Should I bump up to 15” driver?

What about group delay? It seems to a bit of an unknown; how much is acceptable at specific frequencies? I’m designing a subwoofer at the moment and have kept it below a peak of 25ms at 30hz.

NOOB question ;) -- Rather than involve a minidsp right away($$), could I just place a passive HPF in-line? Basically a filter to drop everything below 18 hz, with a steep rolloff?

Hey can you confirm that the rockford p2d4-10 high fq rolloff is really around 1500hz I'm going to use for a 3way build an cross it at 500hz for the lows, an yes I know it's a sub but for the cost and it's t/s perameters it's the best that fits my budget I'm just trying to confirm that it can function up to 500hz I plan to feed it a constant 220watts a 2 ohms, it reads in winisd up to 1500hz with a - 3db rolloff is the software reading it right I'm using it in a passive 10in radiator t The tunable Dayton at 19.7hz in a 1.668ft3 box

Hello, a question, I followed all the steps when loading the data from my subwoffer, but when pressing "Save" a window appears that indicates errors in the loading of the data. Fill in the data correctly, but I can't save it.

If you change the END CORRECTION value, is Winisd showing any change in vent length or tuning ??? For me nothing is changing, whether I use 0.732 or 2.227 in end correction.

I've been considering adding the PE sealed UM18 to my setup, I've got dual PB2000s and a MiniDSP 2x4HD. Any issues integrating?

@hometheatergurus

4 жыл бұрын

No issues. You'll have a phase issue at the pb subs tuning but ep 7 will walk you through it.

Have u tried RELs idé with setting center Channel to fullrange and connecting a sub with high Level Connection to the center?

@hometheatergurus

4 жыл бұрын

Check out the videos on sub setup. We keep everything set to small so we have a predictable sub response that's similar seat to seat. If we allow the center to have an independent sub it will trash the modal response when information is present in that channel and not also present in the rest of the subs.

Hi, great videos once again, thank you for that. I think I am going to take the plunge and try to come up with all the spec for a full marty 18. I was able to get everything in, but I only have one issue, I can't get the air velocity down in 30s...it's way up in 50s, so is a bigger box allow for more velocity or should I modifiy something to really get down in the 30s? Thanks

@hometheatergurus

4 жыл бұрын

Make the port bigger.

@stephanerichard8626

4 жыл бұрын

@@hometheatergurus did that, port is 5x24 now down to 34 velocity, but the vent lenght is now 105 in...

i cant seem to get it winisd to work........can u make a box design for me ..?

make a video on: how do I know where to integrate my in wall subwoofers in my dedicated HT room? :) that is the question! presuming you are building that room from scratch or you already have the room and you need to add materials to accommodate the speakers within the structure.

@hometheatergurus

4 жыл бұрын

That's covered in the room mode episode and the sub setup episode. I'll go ahead and say if it's a dedicated space that's rectangular and symmetrical 1/4 and 3/4 in the front wall is a great spot. But.. Seating placement is critical. Maybe soon I'll make a video just on that not mixed with anything else.

How do you calculate the LPF for a subwoofer? When would you use a LPF?

Awesome tutorial, I am having trouble designing my car audio 4th order sub box. If you have the time would you be willing to help check my specs? Thanks ! Justin,

when putting in the box volume do i put in the gross internal volume or the internal volume after port, bracing and speaker displacement

@hometheatergurus

3 жыл бұрын

Net volume so the port, driver and bracing displacement will be have to deducted to find the net volume.

I used subbox. Simple for my simple mind. Sealed enclosure for a 12 inch driver. Still building so dunno if it'll be successful...

So i was hoping i could use the HT1 18 with the DIY group kuda flat pack. because it has the perfect look and dimesion that i like but @ 8cuft net, its not tuning very well might have to get more with higher net cuft

@hometheatergurus

4 жыл бұрын

8 cubes is on the small side for many 18s unless you want to live with a higher tune.

@joeydelmarsjr.646

4 жыл бұрын

@@hometheatergurus well FI recommends 6-8cuft net @ 26hz for there HT1 but looking at winisd looks like 11-13 @ 20hz looks more flat response challenge will be the round ports velocity and room for the enclosures . decisions decisions

It's kind of a catch 22 because the program doesn't automatically subtract port displacement from the total internal volume, so we need to design everything, then subtract sub+port displacement to get the real volume, and then adjust tuning again?

@hometheatergurus

3 жыл бұрын

Yes this is a tool to design your sub and tune it but you do have to design the box including calculating the port, bracing and driver displacement. The next videos continues with this stuff.

The box volume in winisd tells the net internal volume (gross volume minus the woofer displacement and any space occupied by bracing) or does it tell the gross volume ?

@hometheatergurus

2 жыл бұрын

Net volume.

Buenas, tengo una pregunta. Tengo un subwoofer de 12 pulgadas, según winisd si le hago una caja de 150litros, funcionará muy bien, pero creo que son muchos litros para un subwoofer de 12 pulgadas. Que opináis?

@hometheatergurus

7 ай бұрын

If you entered the info correctly then you're good to go. Some drivers need larger cabs than others. 150 is large but you may be able to dial it down a little and still get a good response from it. The Um12 would work well in a box that size tuned to 18hz or so. As you go smaller you may need to raise the tune a little to keep the raw response in check.

finally

what do you put in as a signal input on winlsd? If I change my input to 2 ohm I get a very different response. Winlsd always starts with a 0,1ohm load. But that is not what it should be at right?

@hometheatergurus

3 жыл бұрын

You can set it up when loading the driver info

@Nicewoodworkingulove

3 жыл бұрын

@@hometheatergurus So when I set up the ohm and RMS in the driver info there is no need to put in the signal watts and ohm to get a correct graph in WINLSD?

You going to show the steps for configuring the Mini DSP as part of this Subwoofer design project?

@hometheatergurus

4 жыл бұрын

That's a good idea. Being that I'm doing a cut sheet for this build I'll show the HPF setting for it too. The rest of the setup would room dependant so ep 7 would take care of that. But great idea and I definitely will. Thanks!

What is the online Sub design app called? Wouldn't mind having a play with it prior to the next video? Keep the videos coming!!

@hometheatergurus

4 жыл бұрын

It'll be out tomorrow!

@waymonfrench2077

4 жыл бұрын

@@hometheatergurus you review svs subs

Hello, my sub has an FS rating of 35Hz is it safe if I tune the cab below the FS rating like 28Hz? will harm my subwoofer? I have read soo many contents online but there is no precise answer though the sub has a frequency rating of 20 to 80Hz. Kindly help

@7Logik

Жыл бұрын

Check the excursion at the frequency

Hey in the RE section my parameters say 3.45 + 3.45 OHM. what do i enter then?

@hometheatergurus

3 жыл бұрын

Enter 3.45 ohms with dual voice coil as it sounds like it's specing each coil.

You can download the T/S paremeters from loudspeakerdatabase.com, no need to manually enter.

@hometheatergurus

4 жыл бұрын

True but not every driver is there and getting it from a manufacturer has less room for error and it literally takes 1 minute to load parameters. It's also much simpler for those learning to do it manually. If they ever need to load a driver they can't find a file for no problem as they aren't relying on another site to supply them with a file. I've never once used that site as I just prefer to load them myself as well. But it's definitely an option.

Curve looked ugly when i entered the LaVoce SAN 214.5 with BASSLINE 121RN (their recommended box 10.3 Cubic ft.....I am still at 15:00 on the vide...

Shame this was released before I made my VBSS subwoofer that thing is fucking huge, and people on the forums were telling me i should build full Marty... Now this as great looking sub that isn’t huge, I’m just thinking of making a future upgrade but can’t decide between this or the Marty cube, so Which one should I choose? More info my room is 1700ft^3 and I’m planning to build 3-4 but not at one time.

@hometheatergurus

4 жыл бұрын

That's a difficult question. The 18s in the large cabinets have more output but 4 of the ones we are designing will be more than most would need.

@Azzy_Mazzy

4 жыл бұрын

Home Theater Gurus just modeled it in winisd and it looks really nice but how much dose an extra sub add in output i heard it’s around 6db but is that true? Also modeled Marty cube im losing like 3db at 20hz and 6db at 30Hz but those are at levels I will never reach and the difference will be smaller when I add one or two subs. Also should you put a 4th order highpass at 16.5hz?

@hometheatergurus

4 жыл бұрын

Everytime you double subs from 1 to 2, 2 to 4 etc you can gain 6db of headroom if they're all the same and all the same power on tap. Now that's if you could get a perfect summation which you won't. If you're getting 4db per doubling you're doing good. The um 12s in a well designed box are very impressive. I've had people I've designed subs for that also had full Marty's and some have commented they would never have built the Marty's if they'd built the um12 subs first. It depends on goals and how important space is to you. My last theater had subs I designed similar to full Marty's but they were hidden. For my living room I'd never use subs that were physically that large. In my next house which were building I plan to use subs similar to what I designed in the video. As for the HPF yes you'll need one however it won't be set at the tuning frequency as the repsonse will begin to drop above where it's set as it's a slope. I cover this an explain how to set it in ep 7.

@Azzy_Mazzy

4 жыл бұрын

Home Theater Gurus I was just experimenting with the winisd cone excursion and trying to get it to not cross the red line

@Hitokiri_Ace

4 жыл бұрын

You aren't happy with vbss? Curious.. but.. why not? I just made 2 of 'em, and while a bit big.. they are awesome for me.

A tip for you Gurus. If you hit the windows+arrows key, It will automaticly put the windows side by side

@hometheatergurus

4 жыл бұрын

Awesome. Thanks!

I'm unclear about +/-3dB. baseline. Do you mean that winISD calculates the baseline for the sub after we input the parameters? Not sure what to make of the graph.

@hometheatergurus

3 жыл бұрын

Yes it shows you. I explain the basics of a response graph here. kzread.info/dash/bejne/ZmeHs9Kkp6i8e5M.html

@RobHTech

3 жыл бұрын

@@hometheatergurus I watched the vid, but it doesn't exactly say how to interpret it. What exactly is "Baseline" zero dB? Because the sub model indicates that it can play higher dB, depending on the volume, etc. I have no reference of what the baseline even represents, so I am confused.

@hometheatergurus

3 жыл бұрын

in the video I linked it explains that baseline can be flat (accurate) or it can have a designer house curve. The +/- 3db should follow their baseline whatever baseline they desire. The baseline is just the target response theyre following or designing their speaker to.

@RobHTech

3 жыл бұрын

@@hometheatergurus Thank you. So, when i use winISD Pro for a rockford P3D4-10, run ported at RF recommended volume, and port length, etc. the simulation shows a 40 Hz peak at +7 dB. I can't get the simulation to make a box exactly as RF recommends. --So, that +7 dB I suppose is wrong, maybe I entered the info wrong. --Some say to desire peak above baseline.

Sometimes i wonder if we tune Ported subs To Low ,since you proved yourself most Low End content is mostly in the 30-50Hz range , ...Perhaps tuning Higher 20-23 Hz would be generally more satisfying , where most Low End content is ??

@hometheatergurus

4 жыл бұрын

I like to have a - 3 just under 20hz if possible. Sure the brunt of the demand is usually above that but it does add to the depth of the bass. I kinda feel the chest kick video kinda ignored that while demand isn't as high below the peaks we saw its still important. I wish I could easily go back and just clarify that. The HAMMER has actually had a tuning change as seen in the build video where I simplified the port by raising tuning to 20hz and also gained a little more output above tuning.

@integra8502

4 жыл бұрын

@@hometheatergurus I think that is a good trade off !,. more Output where it counts most !

How about 2 drivers in 1 box?

@hometheatergurus

3 жыл бұрын

You can select that option when loading the project.

I'm a beginner can someone explain to me in short, about this Hz thing, thanks!

@hometheatergurus

4 жыл бұрын

Watch the episode 4 on "is my speaker a good speaker" and ep 9 sub setup. They cover responses.

@Tashyncho-Sapa

4 жыл бұрын

@@hometheatergurus thank you man!

@hometheatergurus

4 жыл бұрын

@@Tashyncho-Sapa you're welcome!

I'm gonna disagree that Dayton under spec their subs. Xmax is the linear maximum of the coil after that it gets unlinear. That's why there also xmach / xlim. This is where the cone hits the back of the magnet and damage can occur. Xmax is calculated so there is not over specking or under specking. On the filter to protect the driver from frequencies under port tuning you will lose dbs because the filter is not a wall, the mini dsp can do a max of 24db if i'm not mistaken, so you will lose more db in the lower frequencies where the port it. We don't know how much the room will help so it's a consideration when doing a design like you did with that hump. You can also add those filters in winisd to see how much it will affect your frequency.

@hometheatergurus

4 жыл бұрын

Well aware what xmax is. If you haven't seen ep 7 check it out. It goes in depth on how and where to set a filter.

@Quetzalcoatl0

4 жыл бұрын

@@hometheatergurus I've watched all your video :) and i love them, i just don't remember everything. I'm DIY-ing two um 18s in sealed because of size and placement restrictions. Hope it works. They gonna replace a single pb-1000. But his covid-19 thing will slow me down quite a bit =/

@hometheatergurus

4 жыл бұрын

Thanks. And the only reason I stated they under spec is there's independent data that shows they remains distortion free beyond what they spec. But it's definitely not a good practice to purposely push any driver beyond its rated xmax. FYI In the new dedicated theater I'll be using sealed um18s. Probably powered by speaker power amps. Iny open living room I'll be using 4 subs similar to what we're designing in the video with um 12s.

@Quetzalcoatl0

4 жыл бұрын

@@hometheatergurus Can't wait for the videos!

@Azzy_Mazzy

4 жыл бұрын

Home Theater Gurus why use sealed when it’s -3db point is 27Hz and you need more output down low to hear it as well as you do the upper range? Unless you are accounting for room gain which you approximately need a room with it’s longest dimension smaller than 21 feet for room gain to start around 27Hz.

Subwoofer Name: Subby McSub Face Okay . . .my actual comments! 05:15, I will say that you teaching me how to load the driver specs in the correct order helped a lot. I had drivers that I thought modeled AMAZINGLY, then I'd go back and reload the data in the order you taught me and the difference was NIGHT and DAY! That was sooo beneficial 08:56 . . . no it's not . . .that's how all subs should be sized. Go as big as your room allows, the WAF should be secondary, HAHAHA!

My bad you did put signal to it.

Why design around RMS power handling and not Max? And shouldnt that be the AMP power and not the speaker power?

@hometheatergurus

4 жыл бұрын

The RMS is used in Winisd to set where xmax occurs. This is shown in winisd. You will not have clean power at max power as more distortion is present beyond xmax. Speakers don't have power as they need an Amp to supply it. The power specs are to show their thermal and mechanical limits. We're modeling a driver not an Amp so all that's important is the drivers specs. We apply simulated Power (Amp power) in winisd to see xmax and port velocity. You can apply more power in winisd which I do in the video but you exceed xmax and port velocity increases and so does distortion.

@caseykongpanickul3426

Жыл бұрын

@@hometheatergurus hey, I just watched this video after you referred me to it. You're incredibly helpful. I was close to buying the Dayton 1000 watt amp and it would have been a waste. I will instead go with a 500w amp and a miniDSP!!

@hometheatergurus

Жыл бұрын

@@caseykongpanickul3426 thanks and you're welcome! It's often easier to have a video show it than me type 100 words and still not do what a video can. BTW if you ask about the hammer on some of the Facebook home theater pages or even Google it you'll see it's become a quite popular little beast.

Looks like parts express is not in a mood to bring back the UM 12 back in stock post your upload

@hometheatergurus

4 жыл бұрын

Back in stock 7/22. It happens to all popular drivers shipped from over seas. There's been plenty of times the um18 was out of stock for a few weeks.

@brahmeshtripathi4100

4 жыл бұрын

@@hometheatergurus thank you for the response. Love from India✌️

@hometheatergurus

4 жыл бұрын

@@brahmeshtripathi4100 you're welcome and thanks!

Why build this instead of 18 UM in sealed box, similar size box, way more output everywhere even at the UM 12 tuning and you could take advantage of available room gain.

@hometheatergurus

4 жыл бұрын

Because it's for open rooms where we have little room gain and I want to offer something easy to drive that can play quite loud on little power. I've had quite a high demand to design similar subs for guys over the last few years. In my upcoming dedicated theater room I'll be using sealed 18s but of course power to push them is substantially higher so the cost is much higher.

@gsggsghshshs7192

4 жыл бұрын

Home Theater Gurus will you use boosting to make the subs flat or depend and room gain? With room small enough and few sealed 18s you can reach down to 5Hz

@hometheatergurus

4 жыл бұрын

@@gsggsghshshs7192 have you watched the video.? No boosting is needed as these have a natural f3 of 16.5 hz with no baked in filters to boost. Most will have too much output with room gain and need to cut. They'll be very easy to drive and have impressive output. Now they aren't going to outperform a full Marty down low by any means but they're aren't meant to. Just like you wouldn't expect a pb4000 to outperform a pb16. Yep in sealed room or with enough drivers sealed can have great output quite low. That's why I'm going with them in my dedicated room.

@gsggsghshshs7192

4 жыл бұрын

Home Theater Gurus I’m meant boosting for the sealed.

@hometheatergurus

4 жыл бұрын

@@gsggsghshshs7192 yes they'll need some. When you order sealed from svs, Seaton, jtr they are boosting or have amps with adjustable boost settings. You'll need a house curve so even if in room you managed a flat response with room gain you'll still need boosting for the house curve. So yes I expect to need some good power. I'll be using two of these and be running two 18 modules per Amp. Total of 4 18s. www.speakerpower.net/store/p28/SP1-4000-HT.html

Wheres the cut sheet and measurements and all that?

@hometheatergurus

3 жыл бұрын

The cut sheet for version 1 is at the end of the assembly video. Version 2 hammer is in the channels community tab.

@akuma4u

3 жыл бұрын

@@hometheatergurus sorry,, for clarification because my friend who uses winisd said it can only plot graphs and stuff but not give box designs and cut sheets,. im not sure which version he is using,. so what do i tell him? how do i direct him to find the cut sheet and actual 3d box layout and all that cuz he cant find it

@hometheatergurus

3 жыл бұрын

@@akuma4u the cut sheet is at the end of ep 34.

@akuma4u

3 жыл бұрын

@@hometheatergurus thank u!

01:23 . . .okay Boomer . . . .HAHAHAHA! Nah I prefer the newer version, but it's what I learned on. I feel everything works better, the drivers import quicker and overall it's just a better experience. Also, you can change the appearance and that's the first thing I did. Adjusted to a black background with highlighted features . . .anyway . . .**unpause** let's finish this video! HAHAHA!

@hometheatergurus

4 жыл бұрын

I also don't like how you have to select between projects. I like to have several windows open at once. But yes I'm kinda stuck in my ways I guess.. 😁

@johanneswerner1140

3 жыл бұрын

One small thing. The light on dark might be nice for you on a big screen, but it sucks when binging KZread on a phone. Light on dark needs thicker lines to be as visible as dark on light. But it's a really cool video, nonetheless! I'll be ordering parts...

Chest slam

I tried it and got something about dividing by zero. I am left with no idea what to do. This was a huge waste of my time! Fing crap software.

@hometheatergurus

2 жыл бұрын

You have to load the driver parameters per the video. It's a little buggy but if you do your part correctly it works great.

Bro I don’t like your idea of swallowing spit and chewing mouth, it’s disgusting

@hometheatergurus

10 ай бұрын

Well well.... Sounds like it's time for you to watch another channel or you may find other stuff to be offended by. I just taught you to use winisd so you'd think you could get over the sound of human talking and getting thirsty, making a few mouth noises and just say thanks. 😁.