oscillations IN OPAMP help ????

[prorms]

IAM GET A HISS OR TV SOUNDING NOISE ON LOW VOLUME
THAT SOUND WHEN DO NOT FIND A CHANEL
ITS ABOUT 5 WATTS LOUD AMP ABOUT 100 WATTS
IAM USING OPA134
i AM GUESSING need a capitor were the arrow points to not sure on the value
also ihave pin 1 and 8 floating nc

 

[prorms]

this 2 schematics are in preamp

 

[Jan Dupont]

Just a few things

The cap you mention would have no influence on noise you describe.....
Pin 1 and 8 are for offset trim and has nothing to do with you hum....

Whats the value of the resistors used ?
Are your circuit placed inside the preamp case or in a separate closed metal case ?
What kind of Power Supply do you use ?
How are the ground connections made ?

 

[Burnedfingers]

Whats the value of the resistors used ?

Yes, what is the value of the resistors used/gain.