what amp should i build

raszvan · 21st June 2005, 06:16 PM

i want to build an amp...i tryed to build the av400 with a friend...got it working..but not for long ...the irf's blow apart in a few days..i really don't want to build another av400...so i'm wondering..what amp should build now..

jaycee · 21st June 2005, 10:12 PM

Perhaps you should consider a simpler amplifier if your expertise in constructing circuits isn't too good. High power amplifiers are very unforgiving of mistakes.

I would recommend you try Rod Elliot's P3A amplifier.

apassgear · 21st June 2005, 11:06 PM

If power isn't much of a concern try some well documented DIY project such as a Zen 4 From Nelson Pass or a Gain Clone for starts.

Other well documented projects on these forums are a mini Aleph also from NP.

For any of these you will find PCB at a low cost plus the valuable assistance from members of DIYaudio.com

Others such as Rod Elliot's are good starters project as jaycee suggests but you wont find much help or assitance from other members on these forums.

Want to get more involved? have a look at the Krell thread on this forum which is a new effort. There are a number of experimented members participating. This project will bring you awsome 50W of a classic class A power amp.

Have fun...

Tekko · 22nd June 2005, 07:49 AM

Why not try this: http://hififorum.knaak.dk/Tekko/subw...darlington.JPG <-- my modified version, or: http://hififorum.knaak.dk/Tekko/subw...eg/schema1.JPG <-- the original schemo

amplifierguru · 22nd June 2005, 07:55 AM

Ifyoucan hold your breath for a week or so, I'll have an amp of 150W /8 ohm which will redefine price/performance.

I just need to get my website up.

Greg

bigpanda · 23rd June 2005, 03:34 PM

Hi,

What's wrong with the AV400? I had trouble only because of my carelessness. It may be a bit hot but 2 8cm computer fan that cost no more than $5 /pcs will solve the problem. No thumb at start up.

I think it's worth trying.

Leolabs · 23rd June 2005, 03:42 PM

Try Gainclone too

raszvan · 23rd June 2005, 08:26 PM

well....i want power...>200W(8 Ohm)...i'm good at making pcb's...but i'm not so good at all the small things in the circuit...

...anyway...i have have a few diy amp's at home..2*tda7294(100w..1%THD)...2*STK(120W 0.008%THD..and 3 amp's with irf's...they work great...but they have only 120W at 8 OHM..and 1%THD...

21st June 2005, 06:16 PM	#1
raszvan diyAudio Member Join Date: Apr 2005 Location: bucharest	what amp should i build i want to build an amp...i tryed to build the av400 with a friend...got it working..but not for long ...the irf's blow apart in a few days..i really don't want to build another av400...so i'm wondering..what amp should build now..

23rd June 2005, 08:26 PM	#8
raszvan diyAudio Member Join Date: Apr 2005 Location: bucharest	well....i want power...>200W(8 Ohm)...i'm good at making pcb's...but i'm not so good at all the small things in the circuit......anyway...i have have a few diy amp's at home..2tda7294(100w..1%THD)...2STK(120W 0.008%THD..and 3 amp's with irf's...they work great...but they have only 120W at 8 OHM..and 1%THD...

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21st June 2005, 10:12 PM	#2
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Perhaps you should consider a simpler amplifier if your expertise in constructing circuits isn't too good. High power amplifiers are very unforgiving of mistakes. I would recommend you try Rod Elliot's P3A amplifier.

21st June 2005, 11:06 PM	#3
apassgear diyAudio Member Join Date: Nov 2002 Location: Viña del Mar, Torreon	If power isn't much of a concern try some well documented DIY project such as a Zen 4 From Nelson Pass or a Gain Clone for starts. Other well documented projects on these forums are a mini Aleph also from NP. For any of these you will find PCB at a low cost plus the valuable assistance from members of DIYaudio.com Others such as Rod Elliot's are good starters project as jaycee suggests but you wont find much help or assitance from other members on these forums. Want to get more involved? have a look at the Krell thread on this forum which is a new effort. There are a number of experimented members participating. This project will bring you awsome 50W of a classic class A power amp. Have fun...

22nd June 2005, 07:49 AM	#4
Tekko diyAudio Member Join Date: Jan 2005	Why not try this: http://hififorum.knaak.dk/Tekko/subw...darlington.JPG <-- my modified version, or: http://hififorum.knaak.dk/Tekko/subw...eg/schema1.JPG <-- the original schemo

22nd June 2005, 07:55 AM	#5
amplifierguru Account Disabled Join Date: Aug 2004 Location: Earth	Ifyoucan hold your breath for a week or so, I'll have an amp of 150W /8 ohm which will redefine price/performance. I just need to get my website up. Greg

23rd June 2005, 03:34 PM	#6
bigpanda diyAudio Member Join Date: Jun 2004 Location: HKSAR	Hi, What's wrong with the AV400? I had trouble only because of my carelessness. It may be a bit hot but 2 8cm computer fan that cost no more than $5 /pcs will solve the problem. No thumb at start up. I think it's worth trying.

23rd June 2005, 03:42 PM	#7
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Try Gainclone too

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