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Old 11th December 2010, 02:17 PM   #1
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Default 300w power stereo amplifier with pcb layout

all members explanation appreciated and which class is this?
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Old 11th December 2010, 02:21 PM   #2
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Most likely class B since i cant see a biasing circuit of any kind.
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Old 11th December 2010, 02:26 PM   #3
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any modification for this amp? i am pro
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Old 11th December 2010, 02:36 PM   #4
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300W using 2 pairs of 2N3055/MJ2955 per channel?!
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Old 11th December 2010, 03:31 PM   #5
alexcp is offline alexcp  United States
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300W with 24-30v rails? This would only work for a 2 ohm load but would be far beyond the SOA for 2N3055.
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Old 11th December 2010, 03:45 PM   #6
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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.
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Old 11th December 2010, 04:03 PM   #7
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which 500w amplifier pls post working pcb and others.
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Old 11th December 2010, 05:52 PM   #8
jaycee is offline jaycee  United Kingdom
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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.
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Old 12th December 2010, 05:17 AM   #9
ontoaba is offline ontoaba  Indonesia
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That was modified OCL 150W. I post the original here: Based on Hugh Dean's AKSA 55
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Old 24th January 2013, 10:29 AM   #10
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can i get the part list of this circuit
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