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Old 14th December 2007, 12:42 PM   #1
tadiam is offline tadiam  Argentina
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Default other old amp schematic

my next project......maybe.... 40w 8r
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OOOPS is this
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Old 14th December 2007, 01:12 PM   #2
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That schematic has mistakes - look at the 5k6 resistor.
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Old 14th December 2007, 02:18 PM   #3
wg_ski is offline wg_ski  United States
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And I don't know why everyone insists on making that resistor too big. According to my calculations the 5.6k should be around 3k. As it is, the differential balance is going to *really* suck, if it even works at all. It needs to drop .8 volts or so at half the total LTP current - which, IMO, is too low to begin with.

And of course the resistor needs to be moved.
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Old 14th December 2007, 02:46 PM   #4
tadiam is offline tadiam  Argentina
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Default re

I copy this from an old publication....
ok
what components exchange for better use?
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Old 14th December 2007, 03:28 PM   #5
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Are those two '4148 diodes connected properly?!
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