Picking up radio station on 2 channel H

Discussion in 'Amplifiers' started by Vexed73, Jan 13, 2019.

  1. Vexed73

    Vexed73 New Member

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    I have tried different cords, outlets, and guitars. When I go straight into the effects loop return no radio station. So somewhere between input jack and effects return I am picking up a classic sould station. Amp otherwise sounds and reacts great? Any ideas?
     
  2. DreamTheaterRules

    DreamTheaterRules Former Lyricist for Calhoun Tubbs

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    Is it a station you don't like?
     
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  3. Vexed73

    Vexed73 New Member

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    Would be okay I guess not really what I want to listen too when rolling down the volume on my guitar.
     
  4. DreamTheaterRules

    DreamTheaterRules Former Lyricist for Calhoun Tubbs

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    So you get this only when you roll down the guitar volume?

    Email support. They'll help you. I know enough about amps to know this one is not something I'd attempt to answer, but they can help you!
     
  5. LSchefman

    LSchefman Hears Tones

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    The preamp section of an amp increases the volume of an instrument’s signal significantly more than an effects return. So if you’re plugging the guitar into the effects return it still could be a cable, a ground loop, the guitar’s pickups, or lots of other causes that simply aren’t being sufficiently amplified by the loop return to hear.

    A microphonic tube can pick up RFI, a dirty tube socket, heck the power lines can pick up RFI.

    What I’d do to see if it’s originating in the amp::

    Disconnect any pedals and the guitar, turn the amp on, turn up the volume, and see if the RFI happens. If not, it’s pretty likely it isn’t the amp. If yes, check the tubes. If it isn’t the tubes you might also want to eliminate the cable to the speaker as a possible culprit.
     
  6. dmatthews

    dmatthews Dave's not here...

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    You beat me to it... Bastage!
     
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  7. dmatthews

    dmatthews Dave's not here...

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    Betcha it's a preamp tube.
    Try re-seating them, or swapping them.
     
  8. DreamTheaterRules

    DreamTheaterRules Former Lyricist for Calhoun Tubbs

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    Hope the new guy knows I was just joking and really want him to get his amp fixed so he can enjoy it!
     
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  9. AP515

    AP515 Mostly Normal

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    I've picked up radio before. It was a preamp tube like has been suggested. I'd look there first.
     
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  10. dmatthews

    dmatthews Dave's not here...

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    As a full patch member of the [email protected] club I concur.
     
  11. Vexed73

    Vexed73 New Member

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    Replaced v1 and same. Did notice if I turn gain all the way up with bright switch on no radio station. If gain is turned all the way up and bright switch turned off no radio station but a gosh awful squeal that goes away if I play a C7 but is constant whether cord plugged in or not. Could still be a preamp tube but will crack open later today and see if anything looks wrong in there.
     
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  12. Vexed73

    Vexed73 New Member

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    Smart @$$ comments makes life a little better. In my opinion.
     
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  13. 11top

    11top Cousin Eddie's cousin

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    I’m a card-carrying member, too.
     
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  14. LSchefman

    LSchefman Hears Tones

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    Sounds to me like a microphonic preamp tube. You probably know how to check for that already, so I won’t bother you with the usual procedures.
     
  15. DreamTheaterRules

    DreamTheaterRules Former Lyricist for Calhoun Tubbs

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    Yes, once you know people it makes things more fun. Sorry for breaking it out a little too early. Contact PRS, get that fixed, then put up some clips. Hang out. Be one of the boys. Statistically speaking from forum analytics, there is then a 13% chance we’ll become buddies!
     
    #15 DreamTheaterRules, Jan 13, 2019
    Last edited: Jan 16, 2019 at 4:22 PM
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  16. elvis

    elvis Hamfisted String Banger

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    There is definitely something wrong with the amp. It should be picking up classic rock stations.
     
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