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Old 22nd June 2004, 09:55 AM   #1
digi01 is offline digi01  China
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Smile another chip headamp

a test job.
I hook up 3 single channel opamps to directly drive left, right, and ground channels, a la PPA. The initial design uses LM6171 opamps,It is a better choice for this configuration.the 3 access gain setting in 5,and including 10pf slow down caps in feed back loops of each chips.+18v power supply.all hook wire is pc cables,such as SCSI interlink cable.
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Old 22nd June 2004, 10:24 AM   #2
digi01 is offline digi01  China
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inside pic:
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Old 22nd June 2004, 10:27 AM   #3
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Hi Digi01,

Those are nice enclosures. Are they commercial?

Jan Didden
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Old 22nd June 2004, 10:34 AM   #4
digi01 is offline digi01  China
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it is a factory oem case.4mm aluminium front panel.pre-drill holes.very easy in diy jobs.

-digi
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Old 22nd June 2004, 01:59 PM   #5
Philo is offline Philo  United States
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digi,
Nice design (as always). I am curious as why you chose a single source power supply(+18VDC) instead of a +/-9VDC with a TLE2425 virtual ground to balance any supply offset. My personal experience has found this to sound better.
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Old 23rd June 2004, 03:50 AM   #6
digi01 is offline digi01  China
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thank you Philo
I like virtual ground mode too.in fact,I have use a 8dip tle2426 for the +/- rail power supply parts work.

this is the original sch file:http://elvencraft.com/downloads/minidiffsch.gif by morsel.


-digi
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Old 23rd June 2004, 04:18 AM   #7
karma is offline karma  Canada
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wow nice work anymore pic's im going to put it in my pic's server
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