r/diyaudio

My small slice of DIY-Fi heaven and 2020 survival kit
🔥 Hot ▲ 138 r/diyaudio

My small slice of DIY-Fi heaven and 2020 survival kit

u/skylicun — 13 hours ago
🔥 Hot ▲ 81 r/diyaudio

Babinga Wood Bookshelf Speakers w/ matching stands

Pretty much finished but not quite. Scan-speak tweeters, Eminence Alpha 95 Drivers, with Solen perfect lay coils and Mundorf Evo-Oil Caps to make the speakers less bright and more warm. These are paired up with dual Sunfire subs.

u/bananakin1 — 17 hours ago
🔥 Hot ▲ 70 r/diyaudio

3 Way Studio Monitor Build

Hey yall! Longtime listener, first time caller! I’m usually too self conscious to share what I’m working on but these are coming out so great I felt the need to share! Plus, this community has helped me out so much in terms of knowledge I feel it’s the right thing to do.

If you can’t tell, I was heavily influenced by the ATC 100, though I took some personal liberties to suit my taste and monitoring preferences: waveguided tweeter, and a sealed box rather than ported. These are tri-amped with an active crossover, I haven’t quite locked the XO in — right now I just have 1st order crossover points at 500 and 1500. Still have to veneer the cabinets and make them look as good as they sound so if you have any tips on that please send them my way!!! Thanks a million yall. Looking forward to hearing your thoughts.

u/Ok-Stomach-3739 — 16 hours ago

DIY absorber panel

12 mm poplar plywood with 2x 600x300x200 mm Metisse insulation (recycled denim), fabric will be delivered after the weekend.

u/lurkinglen — 20 hours ago

Rework of my old input switch

Reworked my old input switch and it escalated fast 🤷‍♂️…added new input board with THAT based balanced to unbalanced and vice versa conversation, Bluetooth and muses volume control … thought I have some space left but the chassis filled up quickly…imho the THAT chips are really superior to the well-known alternatives DRV and co

u/Gweiloroguecooking — 20 hours ago
▲ 6 r/BudgetAudiophile+1 crossposts

Carmody S2000MT

I have been using the DIY S2000 speakers in my office nearfield system for a couple of weeks now and am very happy with their performance, the sound quality to my ears is a step up from the DIY C-Notes they replaced

u/NoBackground6203 — 20 hours ago
▲ 3 r/3Dprinting+1 crossposts

Custom 3D Printed Bluetooth Speaker

Recently, I Cadded and Engineered a Custom 3D Printed Portable Bluetooth Speaker, with a full Budget of 60 Dollars.

I don't have many of the tools at home except for my laptop, which meant I had to 3d print and get all my measurements from my HS, but about 4 prototypes later, I have ended up here.

The building consists of:

The Dayton PC83-4 full-range speaker

An LED Power Switch

A ZK502 Amp

24V Battery

I dealt with some issues due to the 3d printer I used, such as warping, and ridging, which meant I had to sand, causing some aesthetic problems, especially in the back side.

BTW, I am looking for possible internships or something in this field as a freshman in HS, if there are any recommendations of where I could join to possibly help out or put on my Resume, LMK.

Also, I am willing to publish the CAD if enough people are interested. Anyone with questions, feel free to DM.

u/KeyElephant5970 — 14 hours ago
▲ 1 r/diyelectronics+1 crossposts

Building TWS Speakers with QCC5125 (BTM525) and PCM5102A – Need Help Verifying Schematic and TWS Config

Hi everyone! I’m currently in the middle of a project building two DIY speakers that I want to connect via TWS. I’m using the BTM525 Qualcomm QCC5125 module and the GY-PCM5102A DAC interface. I’ve been trying to finalize my PCB design, but I'm getting conflicting advice from different sources about my schematic.

I found a project online that uses a BTM334 (also QCC5125) with a PCM5102, and the pinout there matches what I see in my BTM525 datasheet for I2S: PIO 16 for BCK, PIO 17 for LRCK, and PIO 18 for DIN. I’m also planning to use PIO 19 for the XSMT mute pin on the DAC. Can anyone confirm if a schematic designed for BTM334 will be compatible with the BTM525? If the pinout is the same I will copy this schematisc and make my own sch and pcb

The thing that worries me the most is the TWS functionality. I’ve seen many posts about these modules having TWS locked in the stock firmware. Does anyone know if they usually work out of the box, or will I definitely need to unlock them? If I have to do it myself, can it be done via a simple USB-to-UART adapter, or is a dedicated TRB/USB-SPI programmer mandatory for QCC5125? If UART works, what voltage should I use, is 3.3V safe? And what software is best for this—Qualcomm’s Config Tool, ADK, or something else?

I’m feeling a bit stuck right now and would really appreciate any help from someone who has experience with these specific Qualcomm modules. Thanks in advance!

Schematics I found you can chech here: https://xtronic.org/wp-content/uploads/2025/08/Schematic-QCC5125-PCM5102-LM4881-Hi-Fi-Bluetooth-Headphone-Amplifier.png

BTM525 Datasheet: https://www.tianjiarun.com/post/28.html?language=2

https://preview.redd.it/swpbhchpskug1.png?width=684&format=png&auto=webp&s=474c67fc2b1d7e15256082df16ac2e1dc91af8c0

https://preview.redd.it/snd0m2fqskug1.png?width=676&format=png&auto=webp&s=72b721340c94e1246b1bb911d9def1494b86613f

https://preview.redd.it/mhfqq7grskug1.png?width=1209&format=png&auto=webp&s=02c2a26875693dd0f0af8933ed2162db3a93f54c

https://preview.redd.it/1f3vt3vbtkug1.png?width=1072&format=png&auto=webp&s=d280055e6df2a8974eaf9f7f9fd2830217c1a807

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u/SpiritualBrick9805 — 20 hours ago

DC out speaker calbe

Hey everyone,

I’ve got DC coming out of my speaker cable on my Luxman C120A and C120M, which sometimes pushes the woofer cone of my Elipson 1303D dangerously forward, along with some pretty nasty noises. Just to clarify, the issue is not coming from the Elipsons—they’ve been refoamed and properly centered.

I’ve already done a full recap of both the preamp and the amp. For personal reasons, I don’t want to take them in for repair again. Instead, I’d prefer to fix the issue downstream and protect the speakers.

I’m thinking of building a small box inline with the speaker cable, using two 4700µF 50V capacitors back-to-back at the input, along with the LJM speaker protection module (shown in the photo above).

Does anyone have experience with this kind of setup? Any advice or pro tips for this type of DIY solution?

Thanks in advance for your help!

u/guilek68 — 24 hours ago

Need help finding woofer replacement

I'm trying to fix a bandpass subwoofer that I have and that sounds really nice, and it has a broken 8" dvc (4+4 ohm) 200w rms woofer that I need to replace; the sealed chamber is 6.5l and the ported one is 8.5l. The problem is that I'm in Europe (so half the woofers I find cost double what they would in America) and that my budget is limited to below 100 euros... Is there something that you think would work, or any suggestion on how to search for what I need on the internet?

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u/Smike0 — 12 hours ago
Week