300w power stereo amplifier with pcb layout

nazirdigi · 11th December 2010, 02:17 PM

all members explanation appreciated and which class is this?

Tekko · 11th December 2010, 02:21 PM

Most likely class B since i cant see a biasing circuit of any kind.

nazirdigi · 11th December 2010, 02:26 PM

any modification for this amp? i am pro

Aldotin · 11th December 2010, 02:36 PM

300W using 2 pairs of 2N3055/MJ2955 per channel?!

alexcp · 11th December 2010, 03:31 PM

300W with 24-30v rails? This would only work for a 2 ohm load but would be far beyond the SOA for 2N3055.

Tekko · 11th December 2010, 03:45 PM

I'd say this one is a waste of time, your better off going with the 500 watt amplifier with limiter from apex audio if you really need this kinda power.

nazirdigi · 11th December 2010, 04:03 PM

which 500w amplifier pls post working pcb and others.

jaycee · 11th December 2010, 05:52 PM

plenty on here if you use the search function :P
You will need more than 2 pairs of transistors per channel (more like 8-10 pairs), and certainly better devices than 2955/3055, to get 300W into 8 ohms... and at least 85V supply rails.

It will need a huge heatsink, and will not be cheap.

ontoaba · 12th December 2010, 05:17 AM

That was modified OCL 150W. I post the original here: Based on Hugh Dean's AKSA 55

shaik219 · 24th January 2013, 10:29 AM

can i get the part list of this circuit

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11th December 2010, 02:21 PM	#2
Tekko diyAudio Member Join Date: Jan 2005	Most likely class B since i cant see a biasing circuit of any kind.

11th December 2010, 02:26 PM	#3
nazirdigi diyAudio Member Join Date: Oct 2009	any modification for this amp? i am pro

11th December 2010, 02:36 PM	#4
Aldotin diyAudio Member Join Date: Dec 2009	300W using 2 pairs of 2N3055/MJ2955 per channel?!

11th December 2010, 03:31 PM	#5
alexcp diyAudio Member Join Date: Jun 2009 Location: Florida Blog Entries: 35	300W with 24-30v rails? This would only work for a 2 ohm load but would be far beyond the SOA for 2N3055.

11th December 2010, 03:45 PM	#6
Tekko diyAudio Member Join Date: Jan 2005	I'd say this one is a waste of time, your better off going with the 500 watt amplifier with limiter from apex audio if you really need this kinda power.

11th December 2010, 04:03 PM	#7
nazirdigi diyAudio Member Join Date: Oct 2009	which 500w amplifier pls post working pcb and others.

11th December 2010, 05:52 PM	#8
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	plenty on here if you use the search function :P You will need more than 2 pairs of transistors per channel (more like 8-10 pairs), and certainly better devices than 2955/3055, to get 300W into 8 ohms... and at least 85V supply rails. It will need a huge heatsink, and will not be cheap.

12th December 2010, 05:17 AM	#9
ontoaba diyAudio Member Join Date: Nov 2009 Location: Kudus, & Malang	That was modified OCL 150W. I post the original here: Based on Hugh Dean's AKSA 55

24th January 2013, 10:29 AM	#10
shaik219 diyAudio Member Join Date: Jan 2013	can i get the part list of this circuit