Comments on: Basic Amplifier Mods for Dummies

By: Auw Jimmy

Auw Jimmy — Sun, 13 Mar 2011 04:32:22 +0000

Hi Rusty,
If you dont have the schematic, you must trace yourself inside the circuit. Then, check the rating of the original capacitor. Finally, decide what to upgrade and upgrade to what.

Good luck on your journey!

Thanks.

By: Rusty

Rusty — Sat, 12 Mar 2011 18:37:24 +0000

Aux Jimmy,

I love your work….It inspires me greatly!!….

I was wondering if I could have your insight on a project I want to do.

I have a pair of AudioSource 5.3A monoblock amps that I would like to upgrade the coupling capacitors on. I have e-mailed the manufacturer requesting a schematic but received no answer. I have read elsewhere on the internet that they don’t release schmatics of their products.

Could you give me some tips on how to determine which of the capacitors are the coupling caps?….Also, any recomendations on possible replacements would be greatly appreciated…

Thanks in advance….-Rusty

By: Auw Jimmy

Auw Jimmy — Tue, 11 Jan 2011 14:47:44 +0000

Hi Rob,
Sorry this stuff has been gone for long time on my attic.

Thanks.

By: Rob

Rob — Sun, 02 Jan 2011 13:28:12 +0000

Can you please show an image of the underneith of the PCB just so we can see the tracks etc.
thanks

By: Spacehead

Spacehead — Wed, 16 Dec 2009 22:42:54 +0000

Hi! I found that same TEA2025B from Creative SBS15 active speakers. I modded that amplifier circuit with KME and Rubycon caps, 1000 uF and 1500 uF. I am driving my Sennheiser HD 201 headphones with it. It sounds like the bass would be more stronger now. Next project is Cmoy headphone amp.
pics: http://i46.tinypic.com/b65vzp.jpg
http://i45.tinypic.com/2sbx5vm.jpg

http://i49.tinypic.com/4uuk9x.jpg
here the C7 and the same on the other side is replaced with Rubycon 1500 uF
I am not sure if they are balanced now.

By: Jimmy Auw

Jimmy Auw — Wed, 02 Sep 2009 10:16:38 +0000

Hi,
This is only for fun. I don’t have any idea (at least for now), to build special enclosure.
Thanks.

By: wednes yuda

wednes yuda — Wed, 02 Sep 2009 07:22:56 +0000

hi Jimmy,
ever consider to build new case for this speaker ? MDF speaker box probably will make better sound.
what do you think ?

By: Jimmy Auw

Jimmy Auw — Thu, 30 Jul 2009 03:30:23 +0000

Hi Richard,
Thanks for your interest, but I’m not that good. Anyway, you still can contact me at me@jimmyauw.com

Thanks.

By: Richard

Richard — Thu, 30 Jul 2009 03:00:34 +0000

Hi Jimmy,

Chanced upon your blog and see that you are an extreme DIYer with much technical expertise. Would hope that you can review the circuitry of my 12 year-old vintage class A car amplifier on the various capacitors used for potential upgrade (and also extend its useful life).

Could you contact me via the provided email.

Thanks,

Richard
Singapore

By: Jimmy Auw

Jimmy Auw — Thu, 23 Jul 2009 13:45:27 +0000

Hi,
Thanks for your interest. So far the best source is to learn from the Internet and start practicing to improve yourself.

Thanks.

By: Charles

Charles — Wed, 22 Jul 2009 18:12:40 +0000

Mr. Auw, First off Thankyou. Just getting my feel wet in electronics. Im greatfull for stumbling opon your mod/site, just wanted
to know if you ever could recomend any tips, technics, reffrenc, etc. one needs to have to be proficent in the world i would greatly apreciate it. I have limited knowladge in microscopy be a field tech. for a local microscope dealer but would offer any help in return.

Once again thankyou for the leson and thankyou for ur time. Best regaurds Charles

By: Jimmy Auw

Jimmy Auw — Thu, 02 Jul 2009 13:51:40 +0000

Boleh, tidak masalah.
Thanks.

By: Paskal

Paskal — Thu, 02 Jul 2009 07:38:38 +0000

Pak, jd caps yg harus diganti nilainya ke yg lebih besar itu, caps yg connect +VB ?? thx

By: Jimmy Auw

Jimmy Auw — Wed, 27 May 2009 01:57:33 +0000

Halo,
Kalo untuk voltase, pake yang sama atau lebih besar dari aslinya.

Kalo untuk uF, sebaiknya cari yang sama, kecuali kamu tau/yakin fungsinya.

Aurilium itu yang external? Ganti PSU dulu deh bikin dedicated dengan PSU external. Itu yang paling ngaruh.

Thanks.

By: Noobs

Noobs — Tue, 26 May 2009 18:29:42 +0000

pak, kalo mau ganti caps gitu.
dari ukuran2nya ada patokannya??
misal volt aslinya 16, diganti yang 50 ato 100 apa bisa??
pgn juga utik2 dikit di soundcard, philips aurilium, apa aja yang mesti di ganti? pake apa kira2 ya. soalnya kadang kerasa terlalu tajem.

thanks..

By: Jimmy Auw

Jimmy Auw — Fri, 15 May 2009 15:27:41 +0000

Itu busa semacam stereofoam sih pak. Biasa dipakai buat bantalan dalam kardus untuk barang elektronik. Tidak perlu diukur, sekedar ditaruh saja.

Thanks.

By: pdm

pdm — Fri, 15 May 2009 15:18:55 +0000

Tq Pak Jimmy, lalu itu terbuat dari apa yah? Dan bagaimana cara mengukurnya? Mohon maaf bila pertanyaan-nya dummy…

By: Jimmy Auw

Jimmy Auw — Fri, 15 May 2009 02:15:16 +0000

Halo Pak,
Fungsinya untuk membatasi “staging” aja… karena meja saya posisinya tidak simetris (ada lemari di sebelah kiri).

Thanks.

By: pdm

pdm — Thu, 14 May 2009 16:57:31 +0000

Pak Jimmy itu di kiri kanan ada kertas apa yah hitam2? Fungsinya supaya apa? TQ.

By: Jimmy Auw

Jimmy Auw — Mon, 11 May 2009 02:13:33 +0000

I would like to do so, but no space…

Thanks.