Just follow the old video and build my own REAMP Box! I did change the xlr input to a unbalanced TS Jack. And instead of a ground lift ive made it a mute switch thank you! awesome video

Another one built and working perfectly. Thank You!

Well done and great info. I have seen some people use a DI box in reverse and also other people using a buffered guitar FX pedal (bypassing the effect) and get what seems like great results. Without actually trying those methods yet, time will tell. Your method is awesome, and I will build one if all else fails.. Thanks. Philip NYC Area

Order everything! Never even soldered before but the idea of paying $200 for one sounds stupid! Thank you for the vid... I think! :)

@gillihansmobilewelding

4 ай бұрын

Haha, "I think". That's hilarious, because the video caused you to spend money. Did you get it built? How'd it go?

@pacman_pol_pl_polska

2 ай бұрын

@@gillihansmobilewelding Spending money on tools isn't THAT bad :=)

Lovely neat job into a very sleek little sized enclosure. Kudos!

Thanks you so much for this video. I was able to make one using Tamura MET31 as the transformer and removed the ground lift switch (always set as lifted). The output volume is very close to the actual electric guitar and it is sounding great so far.

Great video! Very well made and the explanations in the video and comments is much appreciated. Learning a lot from you. Thank you! Going to do this build.

@LifeHarmonic

4 жыл бұрын

Thank you! Have a great time building!

@ilross4010

Жыл бұрын

​@@LifeHarmonic can I send you the scheme and you tell me if is correct?

@tomasotreasaigh111

8 ай бұрын

​@@LifeHarmonic I was just about to subscribe but I noticed you haven't done a video in 4 years, is that correct? Did you change to another channel name maybe? Hope you are ok and doing well. Peace from Ireland mo chara.

WOW it's amazing, you deserve way more suscriptors, I hope your channel gets pretty big soon

Can I skip the ground lift switch and just leave the third pin floating? or is there any situation that we need to connect to that ground

Nice I got that same scope, bought their waveform generator also.

Well i ordered everything from farnell, so hopefully everything will go smoothly. i've been considering building a reamp box for a while. the L2A seemed a bit expensive for DIY, but who knows, maybe I'll realize I need more later

thats a pretty nice little build,. thanks for sharing.

Hey hey. I just wanted to say that you can add a step where you spray a protective clear coat over the paint so that finger grease and friction/use don’t tarnish the paint. I would even do two layers/coats of clear protection paint (not sure the actual name) if u really want it to last

@-______-______-

7 ай бұрын

Acrylic lacquer?

@GraffHabit

7 ай бұрын

@@-______-______- yes

would it be the same-ish schematic and components for a DI Box?

Thank you so much for that. I really appreciate it!!! Have a wonderful day!

@LifeHarmonic

3 жыл бұрын

Thank you for watching!

Can I skip the XLR and just use a TRS stereo jack?

Hey man, i'll be making one soon. Could I build 2 circuits inside the same larger box? I'm planning on making stereo pedal processing with it, and building it this way instead of 2 small boxes would be cool.

@jamesjack3992

3 ай бұрын

would be great to know if you did this !

hey Life Harmonic. I just built this pedal and I'm having some issues where the Impedance makes no difference in the sound when turned, and my reamped guitar sounds weak compared to plugging straight into the amp with my physical guitar. I'm running a TRS > XLR from an Audient ID14 output. Does the pedal need to be wires differently to accommodate for this? I can send through a photo if it helps thanks!

Thanks, I just built one

Silly question but if I took out the XLR jack and added a 3.5mm jack could I use this to convert my modular synth signal to go into guitar pedals? I am trying to figure out so that I can try to avoid paying too much for a guitar pedal adapter for it since I am low on funds at this time but have all the parts for this in my parts bin if it would work

Nice video. I am definitely going to try this build. I just have a question surrounding transformers. Commercial reamp boxes uses a range of different transformers for example Radial X-Amp uses a 10k/10k, L2A uses a 10k/600 and yours a 600/600. How does these affect the sound? As far as I read and understand it can affect the output volume? Can I use any of these transformers for this build and which will give me the highest output volume?

@tiagooliveira82

Жыл бұрын

This is my question too. Did you come to any conclusions?

Nice intro! Like for it

great video! I was wondering if it's possible to build a dual re-amping box in the same inclosure or if that could create any grounding issues? I'm keen to send signal through some stereo pedals.

@LifeHarmonic thank you for sharing this and answering questions. I have a buffered splitter and need to connect a germanium based pedal (Animato), which does not like low impedance. So my situation would be unbalanced jack input to reamped, higher impedance jack out. I went through your replies, but not sure if 1. your reamp box would fit this particular job and how wiring and maybe components would be impacted. Can you help ? Thanks a lot !

Have you ever used this to run vocals through a guitar effects signal chain? Like using a $120 guitar pedal compressor instead of a $2000 rack hardware compressor?

If wiring up an XLR/ 2 1/4 inch combo jack, would I just treat the Tip and Ring the same as pins 2 and 3 on the XLR, and then have pin 1 and the sleeve as the ground? Thanks so much, this video was great!

I did everything as you showed on the video and schematic and it doesn’t work. Really noisy. Pot doesnt work too. What is the problem?

Hi! Great job. In my case, the XLR conector has a dedicated fourth pin for groundind (pin 01 has no ground). So, what should be the best way to wire the gnd.lift switch? Between pin 01 and XLR ground pin, or between pin 01 and output sleeve, leaving pin 01 always wired to ground pin?

Hello. A doubt. I want to use the output of this Reamp Box in a real amplifier. What should the resistance setting of this variable resistor be? Thank you very much.

Does this one pad the signal like -12dB? I assume that 10k resistor does it? I’ve seen some videos people are using diboxes in reverse but lowering the output from the DAW for around 12dB in order to not overload the transformer into saturation. But this resistor after the signal hits the transformer, right? I opened my Radial PRO-RMP and I see some resistors in between the transformer and the XLR pins. So in signal path those are before the transformer, not after it.

Hello, starting from the principle of keeping the output impedance 10 times greater than the input. So wouldn't it be good to connect the output of the audio interface that is 100 Ohms directly to a guitar amplifier that is 1 M Ohm? Grateful.

GREAT Job man! :)

what if the connector is not plastic?

Thanks for sharing! Is the pot and the resistor necessary?

Hey , my transformer is a yellow one and doesn't look quite the same the downside, is it going to effect the sound if I put it the other way? It also has 4 feet and a square ring around it...

Doesn't NEED to be plastic just isolated from the chassis.

nice video. But if I'm making one with a 1/4 TS input, should I solder the sleeve to the switch and the transformer (where the purple cable is)? My outputs are RCA/unbalanced .

ok i tried doing that with a stereo balanced jack connector (my fireface has jack line outs) but using a unbalanced jack cable for the line out. and nothing is working like it should. my understanding is to connect unbalanced to balanced, ring and sleeve should be connected, so with a unbalanced cable i shouldn't have to do anything since the sleeve will touch both the ring AND sleeve on the connector, right? my pot is doing nothing, i get audio on the ground... i'm sure i'm missing something obvious, anyone can help please?

Is there an alternate transformer instead of the one you've used? What should i be looking for. This transformer does not handle bass frequencies very well. Makes the sound too thin.

Is it ok if I connect the remaining lug of the potentiometer to ground? That's the only way I get volume control

Great Video! I'm curious if there is a way to implement some sort of volume attenuator as well? Or does the impedance knob do this? I'm curious how you're sending line level signals into instrument level effects without severely clipping or distorting the input to them. Thanks!

@trevorus

9 ай бұрын

Volume controls are generally set up as a volume divider, this impedance adjuster is just adding series resistance.

Parts list a 100k ohm pot, but schmatic shows a 10k pot. witch is it?

Thank you for your great video loved building it I just have an issue I don’t know if I did something wrong but my box is picking up a radio signal and is a bit noisy should I ground the XLR connector to the chassis? Thank you in advance

@LifeHarmonic

3 жыл бұрын

Thanks for watching! Yes, you can ground one of the connectors to the chassis, either XLR or Jack. The noise should go away. :)

Great video, thanks a lot! Would it be possible to use this as a DI box (instrument to balanced line level) with the proper connectors? Or would there be any necessary modifications for that purpose?

@LifeHarmonic

3 жыл бұрын

You could use it as a DI box, but it has a fairly low input impedance and would need a buffer (or a buffered pedal) before it. It's not an optimal way to do DI though, you would need a different circuit with some active components to get the best results when you plug a guitar straight in.

@rolfrolf9176

3 жыл бұрын

@@LifeHarmonic alright, thanks for the answer!

would this work with all same for Transformer TM022? 1.5k primary, 600 Ohm secondary

Thanks for the nice video. Very good and easy to follow instructions! I have the problem that whenever I turn the pot, it adds a lot of noise to signal, but only when the switch is set to 'Lift'. Do you have any idea what I may have done wrong? I'm pretty sure it's wired exactly according to your instructions.

@Jediroller

6 ай бұрын

Im just using my knowledge from reading amp forums, its probably working like it does in a presense knob for an amp, when you move the switch you can hear a crackling like noise because its biasing the circuit and thats actually DC voltage you hearing on the pot. Its probably normal operation but yeah mabye someone else can chime in. Hope this helps.

Would a Z1604 (OEP) work as well as the vtx you linked in the description? any downsides? it isn't available at the moment

How to implement flip phase switch to that scheme please? Thanks

The link to the schematics is not working it seems. Do you have a fresh link for it?

Thank you for the guide! A question: your instructions call for a 600:600 transformer, but can I use a Xicon 42TM018-RC ? It has 550:550 resistance, and 10k:10k impedance. Thanks in advance!

@LifeHarmonic

3 жыл бұрын

It should work with this transformer as well, just the minimum output impedance will be slightly higher, but for most reamping purposes it won't make a difference.

Can i make a stereo-jack instead of XLR? My audio interface has a mono-jack output, will this affect the operation of the device?

@LifeHarmonic

4 жыл бұрын

Yes, a stereo jack will work just fine instead of XLR. In fact, since I'm using mine with RME Babyface Pro most of the time, I have a jack-XLR cable just for reamping and it works great.

@lexxxa6669

4 жыл бұрын

@@LifeHarmonic Thanks!

tanks for the video, im just ordering parts to try this now... only thing Im confused about is why have the switch? What is the advantage of being able to disconnect the ground? What context is this used for? thanks

@LifeHarmonic

3 жыл бұрын

Disconnecting ground can and usually will improve noise performance quite a lot, but if you're asking why would you want to connect it in the first place, the answer is: if you are connecting two pieces of gear, each grounded somewhere (this is normally at the wall socket), you don't need (or better, don't want) to connect ground between them as well. But if one has no ground (maybe you're using a laptop with a USB powered soundcard, or the device being re-amped is battery powered/has two prong plug with no ground), it doesn't hurt to have it connected.

Thanks for the great video! I built the box from the same parts as in youre partlist. The signal from my box is thin and when I measured it (with oscilloscope), it shows that the output signal start's to weaken and distort especially in the low frequencies. Can you tell what could cause this?

@LifeHarmonic

3 жыл бұрын

Thank you for watching! If the parts are the same, the signal should only distort at the levels and frequencies shown at the end of the video (20Hz-40Hz with high levels), it should not be thin. At what frequencies are you starting to see a drop in level?

Great video!!! Thanx!!!

@LifeHarmonic

3 жыл бұрын

Thank you very much!

Hi. Very nice video! If I wanted to make this box with an unbalanced tele line level input instead of a balanced xlr, could I use the same transformer you are using? (To connect synths to guitar pedals or amps in a live situation).

@LifeHarmonic

3 жыл бұрын

Thank you! Yes, you can use the same transformer, it will work just as well.

This is a very nice video ! Thank you for posting! So if the ground connected gives you so much noise why do we need to add that extra switch on the box?!

@LifeHarmonic

2 жыл бұрын

Thanks! It's not really necessary to include the switch, you could hardwire it in the "lifted" position. With the switch, you can ground the whole system if, for example, you're doing reamping via a laptop that has no ground connection.

@TheCoreys

2 жыл бұрын

@@LifeHarmonic Thank you for the answer! I will build it including the switch then since it helps with different situations! Btw why do we need a volume knob since we can change the output volume from the computer? So far I've been recording noisy small guitar parts straight from the FF800 adjusting the volume by ear, how do u adjust properly? Thank you for the time again!

@LifeHarmonic

2 жыл бұрын

@@TheCoreys It's not a volume, but an impedance adjustment knob. For some pedals, like a fuzz face, it makes a big difference to the sound if the source impedance is low or high, and for those situations, it's great to have this control to fine-tune the sound. As far as the volume is concerned, it really depends on what you want, but most of the time it works by ear. If you record with no gain and then reamp at 0dB it should be pretty close to what the guitar originally put out.

This is absolutely fantastic idea and thank you very much for the links, but one thing still confuses me: the impedance conversion. My outputs on the audio interface are 100ohm impedance, and instrument inputs are 1mohm impedance. So shouldn't the circuit consist of a different ratio transformer and a level potentiometer or a -10dB switch to convert the impedance and level from a line level [-10dB/100ohm] source to an instrument -20dB/1mohm source?

@LifeHarmonic

4 жыл бұрын

Thank you for watching! The transformer is not the only way to change impedance, in fact in modern equipment transformers are rarely used (since their price is high and size is impractical), so most of the impedances are set by a fixed resistor. When you get a -10dB switch (or any attenuation switch) on a device it is usually just a resistor divider that is engaged. The end output impedance is just the value of a series resistor with the output amplifier or in case of an attenuation switch, you have to calculate it from the two resistors used. This is why in my build, I use a variable series resistance to adjust the output impedance and the reason that the potentiometer is wired like it is, is so that the load on the transformer is always constant (always 100k ohm). If it were to be wired just as a variable resistor in series with the positive rail, the variable load on the transformer would change it's frequency/distortion characteristics when turned.

@tylerpark9999

4 жыл бұрын

@@LifeHarmonic fantastic vid! thank you

@TheCoreys

2 жыл бұрын

@@LifeHarmonic didn’t understand anything but sounds like you know what you are doing! Although I don’t understand why we have to add a ground switch since ground connected makes so much noise…

Hi very nice this little build thing, how can I get your that little build thing circuit diagram? Thanks cheers!

@LifeHarmonic

3 жыл бұрын

Hi, you can contact me via e-mail and I will send it to you. Thanks for watching. :)

Great video!! My interface has 4 unbalanced outputs. Do I still need a reamp box?

@LifeHarmonic

2 жыл бұрын

Thanks! It's not absolutely necessary, but as you can see at the end of the video, a directly connected signal (ground) may result in a lot of noise.

can you please help me with how to make -40db sound attenuator..?i really need this to record aircraft cockpit audio.....

@LifeHarmonic

3 жыл бұрын

Thanks for your question, that would really depend on what is the source of the signal. It could be just a resistor divider but I cannot make a helpful suggestion if I dont know the source device. :)

I spray a coat of clear on that paint for extra protection, mines held up.

@LifeHarmonic

3 жыл бұрын

This is a good idea, yes 😀

@meomarte

3 жыл бұрын

I did the same for my load box. Bronze colour and matte clear on that. Holds well.

Thanks for this!!I was about to order a Radial reamp box!I`ll try this first!Just a little question:Where the pot should be to achieve the HiZ of a guitar input?And in what range does the pot work?Thanks again!!

@LifeHarmonic

3 жыл бұрын

Hi George! The pot emulates guitar output impedance, so if it is all the way to the left, the output impedance is very low (like you would have an active guitar), somewhere in the middle (if you have a logarithmic pot) is just about 10k which is a passive guitar on full volume, and all the way to the right is about 100k, which is like a passive guitar volume set to 5.

@electrifried

3 жыл бұрын

@@LifeHarmonic Thanks a lot!I'll try it!

That ... is what I gonna do! Super cool and smack bang in the middle of my budget range! :D Stupid noob question though: Can I use a plastic box? If not, can I use a plastic box with copper tape or copper paint?

@LifeHarmonic

3 жыл бұрын

It's probably going to work just fine with a plastic box. If you have noise you can shield it later with copper/alu tape or conductive paint.

@pinkponyofprey1965

3 жыл бұрын

@@LifeHarmonic Yeah! Noob worries I guess hehe! I saw someone the other day build a complete tube amp and he started the build on a template, a piece of MDF I guess, with all the holes drilled etc. Then he did all the soldering and after THAT he moved the whole cake of components and wires into the box, like "the eagle has landed!". That looked plenty smooth!

Can be used this Reamp as a Di Box? (Guitar amp FX loop out>>>Balanced Line In)

@LifeHarmonic

3 жыл бұрын

Technically it is possible, but it's best if fx loop is solid state so that output impedance is fairly small. And typically there are female XLR connectors on the outputs of devices, but you could make this work if you chose a jack instead of an XLR or a cable with a male XLR to TRS jack.

This is great, but how do you connect it and how do you adjust the impedance?

@LifeHarmonic

4 жыл бұрын

You connect it via a standard XLR cable (Line Out from your soundcard/audio interface) and then use a 1/4" jack cable to your guitar amp/pedals. You can adjust the impedance by turning the potentiometer (clockwise is higher impedance).

@perjohansson2852

4 жыл бұрын

@@LifeHarmonic Thanks for your answer! I will order parts and try to build one.

Great vids! but can we replace the XLR with 3.5mm socket as input, then use cellphone as the source to play the dry track?

@LifeHarmonic

3 жыл бұрын

Thank you! Sure, you can do that, just watch the wiring, because 3.5mm is usually stereo and you have to connect it as mono. Tip + Sleeve wired together and shield as ground. Then it will work just as well.

@powerofsempol2905

3 жыл бұрын

@@LifeHarmonic I saw you are using enclosed socket in both in and out.. so I guess it's not necessary to ground the casing?

@LifeHarmonic

3 жыл бұрын

@@powerofsempol2905 Actually, you can ground it on one side of the transformer only. For most reamping purposes there will be almost no difference, but if you're sending the signal through an amp with a lot of gain it's better if it's grounded on one side. Should have mentioned it in the video...

It did not work for me... flanging sound.... My Scarlett 2i2 interface has two mono outputs, maybe the cable from the interface to the reamp box has wrong wiring, or maybe I did not connect the transformer correctly. (Bourns LM-NP-1001-B1) Can anyone help me make a proper TRS to XLR cable? Should the TRS jack be mono or stereo?

@LifeHarmonic

3 жыл бұрын

Scarlett 2i2 has balanced outputs, so you connect TRS (this is a stereo connector, mono would only be TS)-> XLR like this: Jack tip to pin 2, jack ring to pin 3 and sleeve to pin 1.

@georgeg4136

3 жыл бұрын

@@LifeHarmonic Thanks a lot for the help my friend, I really appreciate it!

Can i use a 1M potentiometer instead? or can i not use a potentiometer?

@LifeHarmonic

2 жыл бұрын

You can use a 1M pot, but if it's a linear pot, the only really usable range will be less then a quarter turn. You can also go without if you don't use fuzz or similar pedals for reamping.

Hello! I did not expect to find another Farnell fan! Hahahaha! I look at Vigortronix data sheet. I get more confused. The transformer you use is 1:1ct (base on the link you provide). There are a few variations of it. 1:1 1:1CT 1CT:1CT There are also 800 ohm and 10000 ohm of the same ratio transformers. What are their differences? Which one is the 'best' for audio purposes? When you say any 600:600 ohm line level audio transformer, literally China one can also be used without perceptible flaw? (The cheap-looking one with either red or yellow tape covering the coil) If China's one is as great as Vigortronix's one then I may use China's one because China's one is damn inexpensive although it looks horrid and unconvincing.

@LifeHarmonic

3 жыл бұрын

You can use any of those variations, CT versions enable you level control (either step up or down) if you wire it that way, but are not necessary. You could also use a 10k ohm transformer, it is again just not necessary, since output impedance of a sound card is so low. For reamping, "best" cannot be defined in terms of impedances, any of these would work. :) You can use a china made transformer, you just have to check out what is the maximum level you can send low frequencies through before it distorts in an obvious way (this depends on the construction and the core).

The pot in mine sound like a tone control, is that normal?

@LifeHarmonic

3 жыл бұрын

It can work a little like a tone control with long cables or high capacitance inputs, although it should not be as noticable as a guitar's tone pot.

hi there - I've just tried this but im not getting any audio out! Does it matter which way round the transformer is? Mine looks pretty much lie yours but has 6 pins not 5 so is symmetrical. I just chose sides at random but would swapping solve my problem? Its the only thing I can think of. Thanks in advance

@georgebloomfield86

3 жыл бұрын

Im using a TRS to xlr cable to go from my audio interface (Focusrite 6i6 - I believe its a balanced output), is this the problem... should it be a TS-xlr instead?

@LifeHarmonic

3 жыл бұрын

It should not matter which way the transformer is if both sides provide equal impedance. If everything is wired correctly (TRS to XLR is fine, just keep in mind you have to connect Tip and Ring to the the pins 2 and 3 of the XLR) it should work with a 6 pin transformer just as well. So I wouldn't know where the problem is, maybe you can take a picture of the wiring?

@georgebloomfield86

3 жыл бұрын

@@LifeHarmonic Thanks for getting back to me! I have sent you a photo of the wiring to your email, would be a massive help if you could take a look! :)

@RockSiffredi

Жыл бұрын

​@@georgebloomfield86 I built one and have same problem and same interface, how did you solve it?

What gauge of wire did you use. And maybe the link to the knob for completenes 😄

@LifeHarmonic

4 жыл бұрын

The gauge doesn't matter, since the power transmitted over these wires is really small, you can use anything. I will add the link to the knob in the description. Have a great day!

@myyt4382

4 жыл бұрын

@@LifeHarmonic thank you very much!

Hi, thank s for this detailed video. I have a question does your box works with amps tube ? I build one and I have a low level signal coming in my amp, an huge difference campare to guitare directly plugged in the amp. I use a Focusrite solo audio interface with rca output send through the RCA->XLR cable to the box and then jack to the amp. Have a good day.

@LifeHarmonic

3 жыл бұрын

Yes, it works with any amp. The signal coming out should be almost exactly the signal coming in to the box, meaning, the level you're sending to the amp is dependant on your soundcard volume settings. If you record guitar without any gain added and then play it back through the reamp box at full volume, the signal should be about the same as the guitar when recording (that is if you're using a 1:1 ratio transformer like the one in the video. If you're using any other ratios you can have different levels).

@baarbak8188

3 жыл бұрын

@@LifeHarmonic thank you for your quick answer. Yes I used the same transformer. I think I need to check my welds and soundcard specifications.

@baarbak8188

3 жыл бұрын

One more question the output signal of your sound card is stereo ? You have a stereo jack to XLR cable ?

@LifeHarmonic

3 жыл бұрын

@@baarbak8188 It's a mono jack to XLR cable (it's configured as mono even though it's a stereo connector).

@baarbak8188

3 жыл бұрын

@@LifeHarmonic ok si it means that it works only if your sound card output is balanced. Not like me using 2 x RCA unbalanced monitor output.

When the pins for the mono jack are bent over, are you connecting them together? At 5:50 it looks like the green wire is touching both pins.

@LifeHarmonic

3 жыл бұрын

Yes, they are connected together. They don't necessarily need to be, both are connected together mechanically when the jack is unplugged, but then one side disconnects when the jack is plugged in. This function is not needed here, so I just connected them together.

@MichaelMyersDoverPA

3 жыл бұрын

@@LifeHarmonic Thank you very much. I have my pedal built at this point, just need to solder the connections. You tutorial is very good and I hope to be able to complete my pedal soon.

@MichaelMyersDoverPA

3 жыл бұрын

@@LifeHarmonic my 1/4” jack only works when the cable is plugged in half way. I am using a mono guitar cable. Is that the way it’s designed. Also, what is the pot knob supposed to do? Mine doesn’t seem to really have an effect to the signal when I turn it. Thanks!

@LifeHarmonic

3 жыл бұрын

@@MichaelMyersDoverPA Maybe you're using a stereo jack socket and it's wired to pick up signal from the RING on a stereo cable. The pot is supposed to alter output imepdance. In most situations this won't be noticable, where you would really see the difference is if you used a Fuzz Face or a similar fuzz pedal and some WahWah pedals directly from this reamp box.

@MichaelMyersDoverPA

3 жыл бұрын

@@LifeHarmonic Thank you for getting back to me, and I probably purchased a stereo jack by mistake when ordering the parts for the build.

Why is the polarity inverted?

@AS-vq3ep

3 жыл бұрын

You mean in the oscilloscope? I think he just offset the scope inputs 180º to see the difference easier.

Great video, i did exactly what you did and my volume knob is not working could you please help me?

@LifeHarmonic

4 жыл бұрын

The knob doesn't act like a volume knob. It's adjusting the output impedance, from just a few ohms to about 100k ohms. This is simulating a guitar volume pot when turned, which is very useful if you're reamping a guitar and the pedal you plug the reamp box in is a fuzz face or something similar that is sensitive to output impedance. In that case, with increased output impedance, fuzz will clean up, which would be impossible with just adjusting the volume digitally on the computer. You can do all volume adjustment in your software or directly on the sound card.

@filipmakesthings

4 жыл бұрын

@@LifeHarmonic oh ok, thank you do so much for help! Great video btw! Looking forward to future videos!

@LifeHarmonic

4 жыл бұрын

@@filipmakesthings thank you, have a great day!

@myyt4382

4 жыл бұрын

@@LifeHarmonic thanks for the info! and what is the position of the knob where I am not affecting the impedance? the lowest, in the middle or the highest?

@LifeHarmonic

4 жыл бұрын

@@myyt4382 The left most position is the lowest output impedance. It's impedance is then much lower than that of a passive guitar when on full volume. When the knob is on 12 o clock, it's impedance is about 10k, which is about the same as a passive guitar with it's knob on 10, and when it's fully up, it's similar to a passive guitar with it's volume on about 7 (this really depends on what kind of pots the guitar is using, logarithmic or linear taper).

Impedance is all over the place even on pro-level equipment, and that's what confuses me. It used to be 600ohm everywhere. Now I have an audio interface that has 20kohm inputs and 100kohm outputs, the DI box from Klark Teknik has 30kohm inputs [instrument level -20dB] and 600ohm outputs [mic level -30dB]... and my mic inputs are 1300ohm or 2000ohm when I turn the -10 pad switch on, as an example. So how does all this different impedance thing works? Shouldn't different impedance change the frequency character of the sound? I would really like to get to the bottom of all this. Especially because firms like Radial are making impedance matching look soooo important. Then again, when I output something into a guitar pedal and match the signal level [about -10dB down] I can surely hear the sound changes even with the true bypass turned on, and my preamps are very clean.

@LifeHarmonic

4 жыл бұрын

Yes, 600 ohm used to be the standard (and for some applications it still is) for matching impedances. When you match the output and input impedance it means that you can transfer the most amount of power over a certain signal path. But we in audio usually don't want to do that, but instead, we want to transfer the most amount of voltage, which means the input impedance should be about 10 times as large as the output impedance. To understand this, you can imagine output impedance as one resistor and input impedance as the second resistor in series and then shunted to ground. With these resistances you create a voltage divider and if the source resistance is very low and the input very high it means that there is very little signal attenuation. If you exclude all the transformers, different impedance matching should normally just have an effect on signal level that you get across. Once you bring in transformers (or in a case of a guitar, an inductive pickup) different impedances also affect frequency response and can affect distortion, depends on how severe you are loading down the source. Dynamic and (passive) ribbon microphones have transformers at their output. And when you load these tranformers down with different impedances, they will change the sound. Why exactly that is, it would require a whole video just on that topic. :) The basic concept is, keep the input impedance at about 10 times the source impedance if you can, this will get you the most transparent sound (especially in the case of a guitar and DI boxes - a lot of DI boxes has, like you said, 30-100k input impedance, which is acceptable when there is a buffered or an active pedal in between a guitar and a DI box, but not when you plug your guitar straight to it (a passive guitar that is, active one is fine). With the volume at 10 your guitar's output impedance is around 10k ohm, with the guitar volume - assuming a logarithmic pot - at about 7-8, its 125-250k ohm, depending on the guitar used. This will severely cut your signal and alter the frequency response, you loose a lot of treble frequencies).

@myyt4382

4 жыл бұрын

@@LifeHarmonic please do such video 🙂

Do you think it matters what king of wire you use?

@LifeHarmonic

2 жыл бұрын

No, you can use any wire you want. :)

@crimsonrecording2820

2 жыл бұрын

Cool thanks man

The parts cost me about $60 with shipping and import tax, still cheaper than Decappo. Please can you tell me if i can use a W100K potentiometer? Its logarithmic, but the one i ordered was too big for the box so i cant use it. but i do have a W100k Pot. Really appreciate your video. If you want to know what i would like to see a video of it would be a video on how to make a simple but good sounding distortion pedal or fuzz.

@aljay9622

3 жыл бұрын

Ok i used an old pedal box to give me more space for the pot i have. Could you please tell me which way the switch is facing? cuz if i have it 180 degrees from the way you have it, then i will be soldering the wires on the wrong contact points. or am i confused? I'm very new to this. Cheers

@LifeHarmonic

3 жыл бұрын

Sure you can use a logarithmic pot as well. New videos on DIY gear are coming really soon and they will include distortion pedals as well!

@LifeHarmonic

3 жыл бұрын

The ground lift switch is not really important how you wire it up, meaning it can be mirrored, on/off function will just be reversed when switching.

@aljay9622

3 жыл бұрын

@@LifeHarmonic Thank you for the reply, Im all set up and just about to do the soldering. Will let you know how it works out! Im so Amped!

@aljay9622

3 жыл бұрын

Ok so, its not getting any sound out of it, there is some humming and I can hear the difference when i flip the switch but no music is going thru. Im going to take it to an electrician to see if i soldered everything on right. Hopefully i can get it going, Cheers.

My Line outs in my interface are mono TS. how will i reamp out to this XLR in device?

@LifeHarmonic

4 жыл бұрын

I have the same situation, so I made a cable TS -> XLR. Just wire the tip to pins 2 and 3, the ground to pin 1 and it will work. You can also use a normal mono jack connector instead of an XLR in the box.

@divinodayacap3313

4 жыл бұрын

@@LifeHarmonic Will this cable compromise create unnecessary noise? isn't the line output of the interface unbalanced, and it will go to the input of reamp box which is balanced, right?

@LifeHarmonic

4 жыл бұрын

@@divinodayacap3313 No, it won't create any extra noise. You are using a normal unbalanced instrument cable to connect from the reamp box to the amp anyway. Just make sure to keep the cables as short as necessary.

@divinodayacap3313

4 жыл бұрын

@@LifeHarmonic Is it really necessary to have plastic Xlr and TS Jacks? I just bought metal ones already. haha sorry I'm a noob at this :(

@LifeHarmonic

4 жыл бұрын

At least one of them should be plastic, otherwise you will connect ground directly through the chassis. It is possible that XLR connector is metal and it's casing is not connected to any pins, if that's the case, it should work. You can check that with a countinuity test on a multimeter.

That transformer is the weak link. Something from OEP would have still been fairly inexpensive, but with better low end performance. Slightly physically bigger though. But if you want a transformer to pass low frequencies, it has to be bigger.

@LifeHarmonic

3 жыл бұрын

You are correct, a physically larger transformer handles low frequencies better, but if you are reamping guitar, even detuned, there should be no noticable difference, since the signal is low and doesn't have much bass content. Even with bass guitar the differences would be really hard to notice unless you were really pushing output signal, but since we're trying to replicate what the actual guitar puts out, signal wouldn't normally be that high.This transformer can pass 20-20kHz easily, so there is no cutoff.

We've been rickrolled.

will receive all parts on Monday :) looking fwd for the build :) Just wondering - where you mentioned you measured the frequency response there is only graph of the phase response. I would be very interested if anybody measured the frequency response like for example here kzread.info/dash/bejne/qp92p5WvotGZg9o.html

@LifeHarmonic

4 жыл бұрын

Actually, the graph includes phase and frequency response. On the top you can see the frequency response - this one corresponds to the left axis, and on the bottom is the phase response - right axis. If you wanted to tame that ~80kHz spike, you could add a resistor-capacitor network (zobel network) to the secondary of the transformer, but since it's out of the normal hearing range, it's really not necessary. Have a great time building!

@myyt4382

4 жыл бұрын

@@LifeHarmonic oh. My bad and blindness sorry! Just one thing - would that spike affect anything if using 96k sample rate in daw? Is that connected anyhow? Or doesnt matter at all? And thanks again!

@LifeHarmonic

4 жыл бұрын

@@myyt4382 Since the highest frequency the 96k sample rate can reproduce is 48khz, there are no issues here. Only at 192khz would this be noticable, but since there is practically zero content in that spectrum coming from any instrument, it's still irelevant.

The music is uncomfortably loud compared to your voice. Had to stop watching. Looks like a good idea, tho.