[savy]

My realistic 31-1988 eq is very noisy mostly in the 250hz band.
with carefull adjustment of all 5 bands the hiss can be minimalized.
The chain is reverb unit/ EQ/ realistic mp-20 PA.
There doesn't seem to be any big power filtering caps in the PA, could
adding a filter cap help with the noise/interaction b/w EQ and PA ?

When the EQ is used with my well filtered fender amp it works
normally.

[Scott Dorsey]

savy wrote:
My realistic 31-1988 eq is very noisy mostly in the 250hz band.
with carefull adjustment of all 5 bands the hiss can be minimalized.
The chain is reverb unit/ EQ/ realistic mp-20 PA.

Okay, I can belivee this.

There doesn't seem to be any big power filtering caps in the PA, could
adding a filter cap help with the noise/interaction b/w EQ and PA ?

No. You don't have a hum problem caused by noise on the supply line,
what you have is thermal noise caused by using the cheapest possible
semiconductors at the highest possible gains.

When the EQ is used with my well filtered fender amp it works
normally.

Sure, because the guitar amp has no top end response at all.

Just throw out the Radio Shack crap and buy an entry-level professional
graphic EQ from an outfit like Rane or Symetrix. You should be able to
find something used at a reasonable price.

--
"C'est un Nagra. C'est suisse, et tres, tres precis."