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Old 14th August 2007, 04:32 AM   #1
aldovan is offline aldovan  Brazil
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Default Recommended output transistor for Class A amplifier

I need know what transistor is recommended for a single ended Class A amplifier.
I want a transistor with good sound and good termic capacity.
My amp run at 30V x 2A in each output transistor.

Thanks,

Aldovan
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Old 14th August 2007, 11:44 AM   #2
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The MJ15003/15004 are pretty tough little TO-3's. If you want to use a plastic package, the MJL21195/21196 will do well.
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Old 14th February 2008, 08:55 PM   #3
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Hi,
Try MJ15023/15024.They have higher ft (4MHz) then the MJ15001/15003. Don't use high hfe transistor in single ended amps, they will oscillate. I had that problem when I built JLH se amp. I tried to use the 2SC3281, and it didn't work.
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Old 14th February 2008, 10:18 PM   #4
aldovan is offline aldovan  Brazil
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Default output transistor

Thanks, but I try this transistor and the sound is bad, too.
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Old 15th February 2008, 03:06 AM   #5
Leolabs is offline Leolabs  Malaysia
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Try some Sankens too.
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Old 15th February 2008, 03:42 AM   #6
taj is offline taj
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Default Re: output transistor

Quote:
Originally posted by aldovan
Thanks, but I try this transistor and the sound is bad, too.
Hi Aldovan,

I think maybe you should look elsewhere for the reason it sounds bad. Check for incorrect bias; already oscillating; faulty part; incorrectly installed part; wrong value part; poor amp design; etc.

Good luck.

..Todd
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