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7th June 2010, 01:38 PM
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#1 |
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diyAudio Member
Join Date: Sep 2002
Location: Slovenia
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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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J.Z. |
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7th June 2010, 05:50 PM
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#3 |
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diyAudio Member
Join Date: Sep 2002
Location: Slovenia
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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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J.Z. |
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12th June 2010, 08:37 PM
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#5 |
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diyAudio Member
Join Date: Aug 2008
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looks great so far!
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13th June 2010, 06:47 AM
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#6 |
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diyAudio Member
Join Date: Sep 2005
Location: in Slovenia :)
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indeed
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15th June 2010, 05:09 PM
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#7 |
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diyAudio Member
Join Date: Sep 2002
Location: Slovenia
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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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J.Z. Last edited by jazzy; 15th June 2010 at 05:14 PM. |
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20th June 2010, 12:10 PM
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#8 |
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diyAudio Member
Join Date: Sep 2002
Location: Slovenia
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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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J.Z. |
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