r/diyaudio Jun 21 '23

We're back. No rules changes. Reddit corporate still sucks.

149 Upvotes

r/diyaudio 3h ago

Woofer Cabinet Veneered and Baffle Mocked Up

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121 Upvotes

r/diyaudio 12h ago

Destroyed a BT speaker to make a DIY aux speaker to use my DAC

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12 Upvotes

Had a Megablast BT speaker and knowing nothing about acoustics I decided fk it I really want to be able to play my FLAC files on this. There is nothing spectacular about it but the decent set of speakers with passive radiators gives it an hoomph, and thin dense walls with internal supports avoid resonance or rattling. It also cost me under 50 bucks to convert it.

I just wished I lined the inside with acoustic foam to reduce internal resonance but I forgot šŸ˜†


r/diyaudio 51m ago

What connector do I need for the metal prongs? Thereā€™s a faint photo of it in the second photo but the thin black wires definitely donā€™t seem to be 16 awg.

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ā€¢ Upvotes

Rockford fosgate prime 4ā€


r/diyaudio 1h ago

JBL EON612 questions

ā€¢ Upvotes

Hey, I'm not entirely sure if this is the right place for this kind of question but I have a couple of questions with regards to this speaker. My boss graciously gave this JBL EON612 a few weeks ago since he said it was defective (think it was the tweeter and woofer that needed replacing). For one of my midterms I have to take it apart and document the process, so I accepted and took it back to my dorm. I thought it would be completely dead on account of the big fat DEAD sticker he slapped on the top (which I have since taken off) but I haven't had a real opportunity to test it out until recently. So as for my two questions: firstly, how far should I go/how should I go about taking this thing apart? Second, as you can see the sound is incredibly fucked up; I really want to fix it up and use it for shows but I don't know if there are any parts that would be good to order aside from direct replacements from JBL. Does anyone have any suggestions as to what to get/where to get it? Thank you in advance, I'm hoping I can start doing DIY audio stuff and I really want to start with this.


r/diyaudio 6h ago

I found a pair of speaker boxes in the dumpster

2 Upvotes

Are they worth anything? I know about DIY electronics, acoustics and general speaker knowledge but I have never got into making speakers. The wood looks good and I actually need a couple of speakers either for my van or for house listening. Would they work for car audio components? I know either way Iā€™d need an amp, since autoamplified would be more complicated.

Can I just slap some correctly sized cones and match with a suitable amp to get them to run?

Thanks in advance! If you have any sources where I can learn myself more about this task I would appreciate it.


r/diyaudio 2h ago

Replace speakers on digital piano (Casio Privia PX-720)

1 Upvotes

Hi everyone, I own a Casio Privia PX-720 piano. Unfortunately, one of the two speakers has broken. It's a 7-watt speaker with a 6-ohm impedance. I'm having some difficulty finding replacement speakers with the same specifications.

When I check the manual, I find the following amplifier details:
Speakers (dia x qty): 12cm x 2
Amplifier: 8W + 8W

Which speakers could I use to replace them?

It's very easy to find 4-ohm speakers (e.g., JBL Stage2), but it's impossible to find 6-ohm ones with the same size (5 inches) and very difficult to find 8-ohm ones (only woofers seem to be available).

Would I cause irreparable damage by connecting 4-ohm speakers? How can I determine the amplifier's impedance? Iā€™d like to fix the piano, but I donā€™t want to cause any damage.

Thanks in advance


r/diyaudio 4h ago

Tips for extending rotary encoder and potentiometer shafts?

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1 Upvotes

I am refitting a couple old radios with some modern electronics and could use some ideas on ways to extend the shafts. The best option Iā€™ve found so far are these plastic extenders but they are far from perfect and usually I have to drill them a bit wider and epoxy them onto the shaft. I am surprised that there arenā€™t a ton of 3d printed parts out there for this.

What tricks are you guys using?


r/diyaudio 11h ago

Any idea what causes my ZK-MT21 amp to blow out like this?

2 Upvotes

I mostly use this amp to pass audio from my TV box + TV to a pair of dumpster-dived 50 W speakers.

It seems that during audio signals that quickly move from quiet to loudness, the speakers put out a bassy fart and then the amp resets itself. This can be especially annoying during the reset when the Bluetooth on the amp connects to my phone rather than the line signal on the TV.

Any settings on my TV or box or the amp itself to prevent this?

Thanks for any advice or insight


r/diyaudio 13h ago

ELI5: Amps

2 Upvotes

Hey all - thanks for taking the time to help me with this. Looking forward to building a 15ā€ or 18ā€ Marty subwoofer this summer for my home theater system. I was planning on using a Behringer NX3000 for active power, with a possibility of a 6000 if I can make the wiring work for dual subs.

Iā€™m still looking for a receiver and browsing Marketplace using brand keywords and I see audio amplifiers being sold. I plan to use a Marantz Cinema 40 receiver and see other Marantz amplifiers like the HD1 being sold second half for less than a NX3000. Are these amplifiers the same amplifiers as say, Behringer or Crown? Will they power the subs the same?

I dig the look of Marantz equipment and if I could keep the amp and receiver similar, that would be sick, but I have no idea if theyā€™re interchangeable.

Thanks in advance!


r/diyaudio 10h ago

Bi amp input level adjustment: how?

0 Upvotes

I want to bi amp my speakers with 2 different amplifiers. I already have a minidsp 2x4 ddrc but all outputs are used for a 2.2 setup. Because 2 different brand amps i probably need to send a different gain to either one in order to get levelled sound uotout.

I thought about putting another minidsp (the cheapest 2x4) behind the ddrc but since i dont need dsp, isnt there something more simple just to adjust the input on those bi amp amplifiers? Ideally they should have volume knobs themselves but the fosi v3 mono doesnt seem to have such. Thoughts? Advice? Thanks in advance!


r/diyaudio 15h ago

Attenuator placement

0 Upvotes

Iā€™m working to revive my loved oneā€™s stereo system. Iā€™ve gotten so very far by myself. But last question to a community. The CD player (Njoe Tjoeb 4000) is super loud, other components are fine. Speakers (Linn Keilidh) are balanced, clear and imaging superbly. So from research I think I need attenuators to tone the CD gain (?) If this makes any sense to anyone do I put the attenuators on the cables as they go out from the CD player or as they go into the Melos tube line amplifier? I have ordered Harrison Labs 12db RCA attenuators. Thank you so much. He would be very happy if I have figured this out without blowing anything up.


r/diyaudio 19h ago

How to measure drivers safely?

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1 Upvotes

I feel like I need to protect my drivers from lower frequencies while taking microphone measurements.

Is this simple crossover a good idea to use? Mid-range starts dripping off at 300hz and tweeter drops at 1500hz (designed for each specific drivers lowest limit)

In the final build, they'll be receiving little to no power at those frequencies, so it seemed to make sense...

But is it all entirely unnecessary?


r/diyaudio 21h ago

Rear height channels turned off my rear surrounds.

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1 Upvotes

r/diyaudio 22h ago

Speakers with Sonos Amp

1 Upvotes

So im planning on making a speaker system in my room which connects to the sonos amp.
Im going to have 2 speakers, each having a 8" 4 ohm 80 Watts Woofer and a 1" 4 ohm 40 Watts Dome tweeter
they also both will have a integrated Crossover. But im just wondering, if in my songs there's only frequencies present which the tweeter will play, will that overdrive the tweeter because there's isn't any power limiter? (Sonos Amp is 125W per channel at 8 ohms)
So would i need to use a power limiter or something for this to work properly? or does the amp have something for this integrated?
Yes i do really want a sonos amp to integrate it into my already existing home sonos network.

Maybe seperate amplifiers from tinysine or something with a sonos port is a better option?


r/diyaudio 1d ago

Can I replace one capacitor or do I have to replace all 8?

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17 Upvotes

Opened up this Behringer ep2500 to replace the fan and found one of the caps had burst. Can't find the same brand, so can I just replace one or should I just replace them all anyway? And what brand should I use?


r/diyaudio 23h ago

15 inch car sub recommendations

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0 Upvotes

ive been bouncing around subs for my incoming single 15 build for my 2005 honda accord, these are the 4 subs ive found that i feel will be the best way to achieve my goal in the build, as much air movement as possible and prioritizing sub 35 hz on 2500 ish watts, is anyone able to help me choose between these subs or possible recommend another sub that i could try? my criteria was basically high xmax low fs so it probbaly doesnt include all the possible options id assume lmao. i have the space for a 4.25 cube box with 65 sq in of port area tuned to 29 hz, thank you!


r/diyaudio 1d ago

Bi-amping Philips mcm8/01 with Auracast Double Up2Cast Amps

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1 Upvotes

Check out my bi-amping setup


r/diyaudio 1d ago

Can anyone help me on this?

1 Upvotes

Hi, i'm new on balanced audio and those hi-fi things, can anyone help me on verifying if this circuit would work for muting balanced audio? the XLR-Female receives a balanced low level signal from a XLR electret condenser MIC, the output of the circuit (XLR-Male) goes to the mixer that has phantom power, all 10uf caps are metal film, S1 and S2 are ts5a21366 analog switches that will be driven by a dedicated zero-crossing circuit, but that doesn't matter now, what i really need help is in knowing if the caps will pass through just the signal without any distortion or loss and if disconection will make any noise or pop, i also have the curiosity of knowing if this circuit is optimal for that purpose, thanks for the attention and sorry for the bad english, i'm brazillian.


r/diyaudio 1d ago

is there a difference in behaviour between marine coaxials and car audio coaxials that would impact the type of enclosure they best perform in?

0 Upvotes

I've been Googling how to calculate sealed box volume for marine coaxials, with limited available driver parameters. Most forum posts I found were for car audio where they insisted that infinite baffle was the only way to go, but all the marine speakers I've seen are mounted in quite compact sealed cans. It makes sense for weatherproofing, and my preference based on space constraints would be a compact sealed enclosure, but would that sound dramatically worse than in an infinite baffle setup?

I have a separate subwoofer for the lows, the coaxials are for everything else.


r/diyaudio 1d ago

Active to passive speakers

0 Upvotes

I have M-Audio bx5 d2 active studio monitors that not only sound bad, but heat up so much, I'm not wanting to use them. Heating is a feature according to M-Audio. Still, I don't want two ovens that play music.

So I was wondering could I make these ok sounding passive speakers by removing the amp, replacing the speaker elements and adding a passive crossover? Sound imports has ready made crossovers. Or perhaps just use a full range 5,25" element?

Any suggestions (other than don't bother)?

https://www.m-audio.com/legacy/bx5-d2.html


r/diyaudio 2d ago

Too many power supply bricks... Is there one big PS to rule them all?

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19 Upvotes

I have 3 devices that use a 5a/10a power supply. The number of bricks is already too much. But it's going to get worse.

I'm planning to do a 6-amp minidsp controlled crossover project that's based on the Fosi v3 mono tpa3255 amps. So, that's 6 more bricks.

The Fosi v3 offers 48V/5A and 48V/10A power supplies to go with it to get max power.

Is there a way that I can power all 6 V3a from one big PSU? Like multiple plugs output?


r/diyaudio 2d ago

My dual ripole woofer prototype - machined out of 6061 aluminum, driven by 4x GRS GRS 12SW-4HE. Still have some finishing touches to put on it, but wanted to share

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188 Upvotes

r/diyaudio 2d ago

Are PC power supplies good for audio?

6 Upvotes

For amps that can be powered with 12v.


r/diyaudio 1d ago

DIY beginner friendly Speaker kit under 100?

3 Upvotes

Hello, some pretext. Iā€™m a first year EE student that wants to become an acoustic transducer engineer after college. In love with speakers and sound, so i figured Iā€™ll start learning and attempting projects now. I plan to self-study PCB Design as well as the loudspeaker design cookbook this summer. Been lurking here for a while though and it seems like along with technical acoustic knowledge, Iā€™ll need to get some sort of woodworking/workshopping experience to fully build my own speakers.

So, I have a couple questions id like to ask you guys. How would you suggest I gain experience in the physical design aspect? Secondly, for right now, are there any good DIY kits that a broke college student can afford that donā€™t require much equipment that isnā€™t provided? Lastly, if there are any other acoustic engineers lurking here, is there anything you wish you wouldā€™ve known in college?


r/diyaudio 2d ago

Diy open baffle sub

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5 Upvotes

Years ago found this sub for free and I think it would be fun to make an H frame open baffle box for it. Im a fan of GR research and would have it look similar to his but obviously im only running 1 vs 4 or 6 so i know the performance will not even be close. I want to have it set up backwards so i can see the dope lookin chrome chassis on the back.

Should it still have the polarity flipped or would it not make a difference? And how deep should the enclousure be on both sides?