CLASS A POWER AMP

mselagea · 5th September 2011, 07:15 PM

Hello to everybody!

I am kindly asking you for a schematic and PCB for a 10-20 watt class A amplifier.I know there are a set of rules in designing the PCB, but I haven't read them yet(actually, I'm a mechanics engineer and I'm very fond of audio).
I asked a coleague from work to design the PCB for me ( an electronics engineer) but he's not in the audio stuff and I don't think he followed the rules.
I will be forever greatfull and I will keep you up to date with the construction.

Best wishes,

Bigun · 5th September 2011, 11:01 PM

There are some amplifier designs you might like here:

The Class-A Amplifier Site

and all the pcb's you need here: http://www.kk-pcb.com/amps.html

don't forget to order a Large heatsink !

mselagea · 6th September 2011, 08:39 AM

Thank you very much Bigun! I know the schematics from JLH but it's kind of hard to order a PCB from Bucharest, that's why I wanted a schematic PCB for DIY purpose.Has anyone made a PCB for JLH class A amp?

selim · 6th September 2011, 09:26 AM

Hi mselagea,

Could you please mail me at selim_ardali at yahoo dot com?
Maybe I can help.

Cheers

Selim

TonedeafDIY · 6th September 2011, 09:27 AM

Try here JLH-2005 – NOTES

Bigun · 6th September 2011, 12:37 PM

Quote:

Originally Posted by mselagea

Thank you very much Bigun! I know the schematics from JLH but it's kind of hard to order a PCB from Bucharest, that's why I wanted a schematic PCB for DIY purpose.Has anyone made a PCB for JLH class A amp?

To be honest, I suspect that you could get away without using a pcb for the JLH 10W amp. It's a classic amp with an excellent reputation. I believe JLH himself built it on a piece of stripboard.

digits · 6th September 2011, 03:00 PM

My vote goes to the little 10W mini aleph.

mselagea · 6th September 2011, 03:35 PM

Thank you very much everyone.I will talk to my coleague tomorrow regarding the links you have sent me.I will keep you updated with the results.

jerryo · 6th September 2011, 04:13 PM

There are JLH pcb's on Ebay that you might have a look at; also kits with components for the same.
Check out Jims Audio ebay shop.

5th September 2011, 07:15 PM	#1
mselagea diyAudio Member Join Date: Apr 2011	CLASS A POWER AMP Hello to everybody! I am kindly asking you for a schematic and PCB for a 10-20 watt class A amplifier.I know there are a set of rules in designing the PCB, but I haven't read them yet(actually, I'm a mechanics engineer and I'm very fond of audio). I asked a coleague from work to design the PCB for me ( an electronics engineer) but he's not in the audio stuff and I don't think he followed the rules. I will be forever greatfull and I will keep you up to date with the construction. Best wishes,

5th September 2011, 11:01 PM	#2
Bigun diyAudio Member Join Date: Jan 2009 Location: K-W Ontario Blog Entries: 2	There are some amplifier designs you might like here: The Class-A Amplifier Site and all the pcb's you need here: http://www.kk-pcb.com/amps.html don't forget to order a Large heatsink ! __________________ "The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

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6th September 2011, 08:39 AM	#3
mselagea diyAudio Member Join Date: Apr 2011	Thank you very much Bigun! I know the schematics from JLH but it's kind of hard to order a PCB from Bucharest, that's why I wanted a schematic PCB for DIY purpose.Has anyone made a PCB for JLH class A amp?

6th September 2011, 09:26 AM	#4
selim diyAudio Member Join Date: Apr 2003 Location: izmir turkey	Hi mselagea, Could you please mail me at selim_ardali at yahoo dot com? Maybe I can help. Cheers Selim

6th September 2011, 09:27 AM	#5
TonedeafDIY diyAudio Member Join Date: Nov 2005	Try here JLH-2005 – NOTES

6th September 2011, 03:00 PM	#7
digits diyAudio Member Join Date: Apr 2011	My vote goes to the little 10W mini aleph.

6th September 2011, 03:35 PM	#8
mselagea diyAudio Member Join Date: Apr 2011	Thank you very much everyone.I will talk to my coleague tomorrow regarding the links you have sent me.I will keep you updated with the results.

6th September 2011, 04:13 PM	#9
jerryo diyAudio Member Join Date: Jun 2007	There are JLH pcb's on Ebay that you might have a look at; also kits with components for the same. Check out Jims Audio ebay shop.

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