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running one amp into another question...

Discussion in 'Amp Central Station' started by FortyEight, Nov 23, 2020.

  1. FortyEight

    FortyEight Tele-Holic

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    So the other day I ran my vox cambridge 15 V9159 from a line out into my rumble 40 and i think I liked the sound. I like the gain on the vox a lot and the extra eq and low end from the rumble seemed like a good combo.

    Is there any technical issue doing this? They are both 8 ohm speakers. I guess I didn't know if that would be hard on the amps or not. I don't quite have an understanding of all the ohms stuff and all that.
     
  2. monkeybanana

    monkeybanana Tele-Holic

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    If there is a line out then you are fine. If you were running from the speaker out into the other amp then yes that would be trouble but you would know that already :)
     
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  3. MrCairo46

    MrCairo46 Friend of Leo's Gold Supporter

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    On two input amps back in the day we would plug a guitar into channel one and run a cable from channel two to the second amp input to get the same effect
    Never destroyed the universe like a guitar shop employee told me once.
     
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  4. printer2

    printer2 Poster Extraordinaire

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    The only problem you might get is a ground loop, humming from the amps, depending on how you have your amps plugged into the wall. As far as what you are doing it is safe to do.
     
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  5. FortyEight

    FortyEight Tele-Holic

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    Well actually I wasn't sure but I figured the line out was the better proposition for what I was doing.

    One more question... What kind of cable am I supposed to use for this scenario? I didn't even really realize this either but I guess there is a different kind of cable to go from a head into a cabinet.... Is that what I should be using to go from one amp to another? And what is the name of that cable? I have a shorter cable, about 6' that says right on it "Instrument cable" so I'm assuming that's still meant for guitars and not for an amp head to cabinet.....
     
  6. mkdaws32

    mkdaws32 Tele-Afflicted Gold Supporter

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    The line out will be a relatively low voltage. An instrument cable is perfect for this. An instrument cable is shielded to keep noise at a minimum. The other cable you are referring to is a "speaker cable" and it is important to use this for higher wattage amplifiers (especially PAs systems, which could be thousands of watts) because it is a thicker cable that can carry the higher voltage safely. Speaker cable are often not shielded because the signal is already amplified at this point in the signal chain - the noise floor is not as much of an issue. I have used instrument cables for speaker cabinets before for low wattage apps (like 18 watt amps, for example) and it has not been a problem, as long as the cable doesn't get hot, or even warm to the touch. However, if you use an unshielded speaker cable in place of your instrument cable going into the input of an amp, be prepared for a very noisy signal, up to and including pickup up local radio stations.
     
  7. FortyEight

    FortyEight Tele-Holic

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    OK, that helps me. Thank you!!!!
     
  8. SomeGuyNamedRob

    SomeGuyNamedRob Tele-Meister

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    I miss amps having those dual inputs to be able to chain together.

    When I was gigging, I'd chain input 2 of my Fender SS amp into my Marshall 2204 head. Huge sound.
     
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