• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
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    the safety precautions around high voltages.

mixing coupling cap types

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PRNDL

Member
2006-10-17 3:39 pm
www.naturdoctor.com
I'm building a guitar amp for a jazz player and thought it would be cool to use teflon coupling caps. I have four and used 2 .018µF in the preamp section, and 2 .033µF after the cathodyne phase inverter. I also used one .022µF paper-in-oil cap before the phase inverter.

The circuit is: gain - volume - gain - tone/master - gain - PI - output tubes

I'm wondering if the PIO cap will limit all the cool tone from the teflon caps, or if this is a non-issue.

Thanks!!
 
HollowState

HollowState

Member
2006-08-22 6:43 pm
Taxland, New Jersey
In my experience teflon capacitors and the faster plastic dielectric types tend to increase the high frequency response of the amplifier. This may result in a more "tizzly" sound. (is that a word?) Acid rockers might like it, but most jazz guitarists I know prefer a more mellow "woody" sound. You'll just have to try them and see.

All the old Fender and Ampeg amps used paper capacitors and carbon comp resistors. This, in part, is what gave them their "sound".
 
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