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Old 7th June 2010, 01:38 PM   #1
jazzy is offline jazzy  Slovenia
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Default Redesign classD amp.

Its time to redesign my 4 years old Icepower based power amp.
Inside an old amplifier really reminiscent of bird's nest, but it worked without any errors.
I will use B&O Icepower 250A with analog PSU and 250ASP modules.
I decided for the following configurations:
-Dual mono amp. with analog PSU
-Dual mono amp with ASP modules + balanced signal preamp!
-2 X mono amp. with huge PSU.
For stabilised 2 X 12V I will use excelent LCaudio design lownoise PSU.
Housing design will be similar to the well known Danish manufacturer.....black anodized aluminium + stainless steel front and top ahhhh!

Jazzy
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Old 7th June 2010, 03:27 PM   #2
jazzy is offline jazzy  Slovenia
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Default Redesign ClassD amp!

Internal topology of future amplifiers!
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Old 7th June 2010, 05:50 PM   #3
jazzy is offline jazzy  Slovenia
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Default Redesign ClassD amp!

Dual mono amp is almost completed.
But I have to wait for the delivery of OPA 2604.
Because of excessive voltage from the transformer( 2 X 17V AC instead of the 2 X 15V), I must replace the NE5532 with OPAs in the Low-Noise regulator !
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Old 8th June 2010, 05:34 PM   #4
jazzy is offline jazzy  Slovenia
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Default Redesign ClassD amp!

Quick look at the outward appearance........
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Old 12th June 2010, 08:37 PM   #5
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looks great so far!
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Old 13th June 2010, 06:47 AM   #6
luka is offline luka  Slovenia
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indeed
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Old 15th June 2010, 05:09 PM   #7
jazzy is offline jazzy  Slovenia
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Default Redesign ClassD amp!

I changed the transformer low-voltage secundar to 2 X 15V.
Low noise reg. is now OK.
Amp. ready for first listening test!
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Last edited by jazzy; 15th June 2010 at 05:14 PM.
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Old 20th June 2010, 12:10 PM   #8
jazzy is offline jazzy  Slovenia
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Default Redesign ClassD amp!

2 X 250ASP modules prepare fot test ride
Add extra capacitors( Elna for Audio 60.000uF) for better performance!?
Next week I will finish and installed preamp modules too!
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Old 25th June 2010, 10:22 AM   #9
jazzy is offline jazzy  Slovenia
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Default Redesign classD amp.

First monoblock ready for test!!
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Old 25th June 2010, 06:05 PM   #10
jazzy is offline jazzy  Slovenia
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Default Redesign classD amp.

Left and right monoblocks are ready for test!!
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