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Old 19th September 2012, 04:19 PM   #311
Mooly is offline Mooly  United Kingdom
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Originally Posted by warrior007 View Post
@Mooly
thnx, i will be using using 2SA1837\2SC4793
They look a good choice from what I can see
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Old 19th September 2012, 04:32 PM   #312
Mooly is offline Mooly  United Kingdom
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For all you LTSpice addicts here are some files on the amp.

1Khz 1watt
1Khz 70 watt
20Khz 1 watt
20Khz 70 watt
CCIF 19+20Khz intermodulation test
CCIF 19+20Khz intermodulation test
Ripple rejection
Attached Files
File Type: zip M1 LTspice Files.zip (32.2 KB, 77 views)
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Old 19th September 2012, 08:59 PM   #313
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Hi Nico
Two reasons.
One was to supposedly emulate the higher output impedance of valve gear. The other was that 0.22 ohms alone is pretty much sufficient in itself to isolate the amp from capacitive loads (cables etc) even without the use of an output inductor although in the final design I included both.
Did it live up to the expectation? You also limited the Damping Factor but some attach lesser snake oil to it.
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Old 20th September 2012, 06:27 AM   #314
Mooly is offline Mooly  United Kingdom
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Originally Posted by Nico Ras View Post
Did it live up to the expectation? You also limited the Damping Factor but some attach lesser snake oil to it.
Absolutely I've always been totally happy with the overall subjective performance. You can experiment and tweak ad-infinitum but this amp does what the design brief set out to achieve. It makes music and never fails to delight on that score.

Enjoy
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Old 20th September 2012, 07:02 AM   #315
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Absolutely I've always been totally happy with the overall subjective performance. You can experiment and tweak ad-infinitum but this amp does what the design brief set out to achieve. It makes music and never fails to delight on that score.

Enjoy
Hi Mooly,

Can I use darlington for the output?

Thanks,
Boyet
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Old 20th September 2012, 07:10 AM   #316
Mooly is offline Mooly  United Kingdom
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Originally Posted by boyet0173 View Post
Hi Mooly,

Can I use darlington for the output?

Thanks,
Boyet
Not easily. It would require considerable reworking of the driver and bias sections. The lateral FET's and their ease of drive is one of the amps main features... and one of the reasons it sounds as good as it does.
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Old 20th September 2012, 07:12 AM   #317
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Originally Posted by boyet0173 View Post
Hi Mooly,

Can I use darlington for the output?

Thanks,
Boyet
Hi Mooly,

Sorry for the wrong question..it is not intended for this question in this amp. Sorry.

Regards,
Boyet
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Old 20th September 2012, 07:15 AM   #318
Mooly is offline Mooly  United Kingdom
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No problem
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Old 20th September 2012, 07:26 AM   #319
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No problem

Hi Mooly,

For now I print the pdf layout by alexmm. I want to build this one. Thank you for this design.

Regards,
Boyet
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Old 20th September 2012, 08:01 AM   #320
Mooly is offline Mooly  United Kingdom
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Originally Posted by boyet0173 View Post
Hi Mooly,

For now I print the pdf layout by alexmm. I want to build this one. Thank you for this design.

Regards,
Boyet
That's good. You won't be disappointed
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