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Using a Y cable with the Bass

Discussion in 'Amps and Cabs [BG]' started by waytoodeep03, Oct 15, 2005.

  1. Could I use a Y-cord connected to my bass to split two different amplifiers (one would be a behringer head to an avatar 2. would be a peavey kb 300 keyboard amp)

    I really want to get the most out of that 15" keyboard amp that is just sitting around the house
  2. chaosMK


    May 26, 2005
    Albuquerque, NM
    Hi-fi into an old tube amp
    Go for it, that would work.
  3. would there be any signal loss do you think?
  4. As long as both amps are in phase with each other I don't see why not.
  5. what does in phase mean? i dont want to blow anything up
  6. Could be some loss of volume as there may be an impedance mismatch, the old way was to run a cord from another input in the same channel to the other amp which is easier and only needs another cord, they will be in phase. Out of phase means one signal is 180 degrees out from the other, they cancel each out out, but if the source is in phase as it would be in this case you should have no problems. The most common example of out of phase is when you hook one speaker up backwards eg: neg. to pos, pos to neg. with a stereo or something like that, two speakers in the same cab etc.
  7. chaosMK


    May 26, 2005
    Albuquerque, NM
    Hi-fi into an old tube amp
    Is there much difference if you use a Y-cable as opposed to an ABY box? I originally thought he was going to go through an ABY.
  8. BurningSkies

    BurningSkies CRAZY BALDHEAD

    Feb 20, 2005
    Seweracuse, NY
    Go for it, you'll be fine.

    Don't worry about the phase thing on a mechanical/electronic level.

    What phase refers to is that if the amps put out sound waves where the waves from each amp aren't synching up properly, they can cancel each other out, meaning less volume, but no damage will happen to your gear.

    I use a Y-cable into both channels of my amp when playing sometimes.
  9. Munjibunga

    Munjibunga Total Hyper-Elite Member Gold Supporting Member

    May 6, 2000
    San Diego (when not at Groom Lake)
    Independent Contractor to Bass San Diego
    You can use a Y-cable without too much danger, but you're better off using an ABY box for better impedance matching.

  10. Most A/B-Y boxes that I've come across are just fancy Y connectors that can be bypassed.....
  11. Bob Lee (QSC)

    Bob Lee (QSC) In case you missed it, I work for QSC Audio! Gold Supporting Member Commercial User

    Jul 3, 2001
    Costa Mesa, Calif.
    Technical Communications Developer, QSC Audio
    Because of the buffered output that most active basses have, they generally won't suffer any degradation of performance when Y-cabled into two amp inputs. Passive basses, OTOH, have a significant output impedance and could lose signal or some high end when you do that. It might still sound okay to you, though.
  12. BurningSkies

    BurningSkies CRAZY BALDHEAD

    Feb 20, 2005
    Seweracuse, NY

    I'm a reggae player.

    Any high end loss is just an additional bonus. ;)
  13. RichardLEntrup


    Jan 20, 2014
    So in the simplest of terms, you just use a Y cable with the bass into 2 amps and you'll be fine? Because I bought one of those gold splitters from RadioShack to try and use on 2 mini-amps for some loud Marching Band bass player bleacher tunes :bassist:. But when I tried plugging in 1 cable from the bass to the splitter input and 2 cables from the outputs to the 2 amps, one of the amps just overpowered the other.
  14. Forrrest


    Mar 10, 2013
    you probably have a volume control on both amps, use them accordingly
  15. Jazz Ad

    Jazz Ad Mi la ré sol Supporting Member

    There are severe impedance issues when using a simple Y to connect to 2 amps.
    Most heads offer more reliable ways to achieve this. Typically, you can use the tuner output of one amp toward the input of 2nd amp.
  16. Zombie Resurrection
  17. Baird6869

    Baird6869 RIP Gord Downey. A True Canadian Icon. Supporting Member

    8 years! Nice one.
  18. RichardLEntrup


    Jan 20, 2014
    It turns out my DigiTech BP90 had 2 outputs on it's side, all I had to do was turn the switch to Amp, thanks anyway ;)