Ahh thanks! Didn't notice the name difference..pedroplanet said:that's the sontec case, not calrec
Is it much different in design and sound from the Calrec?
Ahh thanks! Didn't notice the name difference..pedroplanet said:that's the sontec case, not calrec
http://www.groupdiy.com/index.php?topic=10776.0Lucin Niega said:Does anyone have the pcbs for this project that they would be willing to part with? I want to build a single channel.
G-Sun said:http://www.groupdiy.com/index.php?topic=10776.0Lucin Niega said:Does anyone have the pcbs for this project that they would be willing to part with? I want to build a single channel.
2) all the 100n and 22u caps grounded to the power rails
Second that. It's likely your "noise" is hash from oscillation & marginal stability.gyraf said:2) all the 100n and 22u caps grounded to the power rails
You will need these - this circuit likes to oscillate if local supply power is not kept calm
Maybe try hanging them on the underside of the PCB from each of the IC's power supply pins to ground?
Except your mains power switch every pot and switch in this design is in the audio path.ncoak said:.. just wanted to verify that the pots/switches are not in the audio path in this sort of design ..
Your audio signal is the voltage that this state-variable-filter design responds to. This is not a VCF or switched cap design. The ICs used in this design are opamps (a bunch of transistors, diodes, caps and resistors built by a piece of silicone chip).i'm assuming that since it's ic based, the pots are simply adjusting the control voltage to the chips
Unsolder the pots and measure the resistance from each end with the pot set to 50%. Compare this to a good volume control pot which should be Log.ncoak said:.. is it safe to assume i have some mislabeled c100k pots?
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