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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: Bypassing gain controll Class D Audio SDS Amp posted by Chip647 on March 14, 2015 at 11:15:33:
What I was talking about was referenced here:
http://www.computeraudiophile.com/f8-general-forum/class-d-audio-sds-254-a-8483/
pots
Yeah, it comes with two pots. They look kind of cheesy but Tom insists they are quite good. I played around with them and settled on a gain of about 27 dB, and put in some Vishay naked 2.2Kohm resistors. Per Tom (please note the wire color coding has changed):
"For those who wish to change the pots for fixed resistors, here are resistor values to produce required gain. Gain is listed in dB: To change gain potentiometer to a fixed resistor, you would connect a fixed resistor between the yellow and black wires on the gain controls (of course, remove the gain pots). Leave the red wire disconnected.
Use high quality 1% resistors: 1/2 watt is sufficient.
560 Ohm = 31 dB
1K = 30 dB
2.2K = 27 dB
5.2K = 23 dB
6.2K = 18 dB
7.5K = 16 dB
I hope this is of some help. Please feel free to post this on the forums if it will help others. On my personal systems here, I use the same pots that come with the kits."
I wasn't sure now that the wire color codes had changed again which ones to jump, and also how to measure the resistance on the pots?
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Follow Ups
- RE: Bypassing gain controll Class D Audio SDS Amp - Aaron 01 11:30:45 03/14/15 (0)
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