I use my IGC with a Bottlehead Foreplay pre-amp, which has a 2uF output cap. I recently upgraded the output caps in the Foreplay, so it seems like a good idea to bypass the IGC input caps, as they seem to be redundant.
Am I missing something here?
Also, in the IGC there is a 22K resistor to ground between the input and the cap, I assume I should get rid of that as well?
Am I missing something here?
Also, in the IGC there is a 22K resistor to ground between the input and the cap, I assume I should get rid of that as well?
Thanks for the response.Netlist said:Measure the output offset without the cap.
If all is within specs you can leave it out. Not so for the 22k.
/Hugo
What is the purpose of the 22K? (Just to make certain, R4 in the following schematic: http://www.platenspeler.com/diy/amps/cyclone_lm3875_inverted.gif.)
Gotcha. Thanks again.Netlist said:R4 determines the input impedance of the circuit.
/Hugo
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Chip Amps
- Bypassing input cap on IGC?