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PM2K EQ MOD...HYBRID OPAMP
Posted: Mon Jan 19, 2015 8:13 am
by audioguy
Ok i have eq mods all ready to install, well one question... the caps on the low mid, 2.2 & 3.3, theres no indication on the polarity. I also successfully built 2 of the Hybrid opamps. I first run in class A and wanted to try AB...when i first installed with class A the LED worked and everything sounded good but after i removed and soldered the jumpers on each, nether one of the opamps LEDs would come on but both still worked. Any thoughts? thanks
Re: PM2K EQ MOD...HYBRID OPAMP
Posted: Sat Jan 31, 2015 12:08 pm
by Joe Malone
audioguy wrote:Ok i have eq mods all ready to install, well one question... the caps on the low mid, 2.2 & 3.3, theres no indication on the polarity. I also successfully built 2 of the Hybrid opamps. I first run in class A and wanted to try AB...when i first installed with class A the LED worked and everything sounded good but after i removed and soldered the jumpers on each, nether one of the opamps LEDs would come on but both still worked. Any thoughts? thanks
The 2.2uF and 3.3uF caps in the PM2000 EQ kits are Non Polar types so can go in either way around.
The Hybrid kit red led lights when in Class A and should be off in Class A/B.