Can I connect HI-FI or PA power amp to my bass cab?

Discussion in 'Amps [BG]' started by Lorenzop, Feb 1, 2014.


  1. Lorenzop

    Lorenzop

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    Waiting for proper bass head so this is intermediary solution BUT:

    Can I connect my SS Hifi or PA power amps to the speaker-in jack of my bass cab?

    As far as my tech noob knowledge goes, I think it should be fine, the impedance matches. The amps have all the freq. response. The power handling of speakers cab is 65W and my amps are 100 or 300 watts, but Ill be having room loudness anyway, so low volume, that should also match. The power amp will be receiving line signal so thats fine (im not pluggin bass into the power amp). Also although stereo the amps are SS so just using one channel and leaving the other without load wont be a problem.

    My only problem: the cab has a trs jack, the amps have just exposed-wire connectors red and black + and -
    Should I just cut one end off my cab speaker cable and then tie the wires to the power amp? How many wires -and what colour coding / what goes to + and - ?
    Ive never done this -am tech noob!:hyper:
    Thanks
     
  2. Jeff Scott

    Jeff Scott Don't just TalkBASS - PlayBASS! Supporting Member

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    Why does the cab use a TRS jack? Is the ring used for anything in particular in that cab?

    Other than that you should be good to go given your plan to remove a plug from one end of the speaker cable. The hot (+) wire goes to the red connector on the amp, now you know where the other one goes. If you are using only one cab it really doesn't matter which way unless you need to match polarity with something else like a PA or recording feed.
     
  3. Lorenzop

    Lorenzop

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    My bad it's a standard TS speaker jack!!
    Thanks.
     
  4. OldogNewTrick

    OldogNewTrick

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    just dismantle one end of the cable and tie the bare wires to the posts, just as you would with your hifi speakers.

    What are you going to use as pre-amp?
    If you have a passive bass, it matters. If you have an active bass, just run it into the poweramp or line in of your hifi. Adjust your sound on board on your bass.

    As long as you just want to practice at home, almost anything goes. If you want to jam, well then things get a bit more complicated and we need to know all components in order to advise.

    Good luck.
     
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  6. will33

    will33

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    No problem at all then, just wire + to tip and - to sleeve.

    Many PA (or "hi-fi") poweramps are used in rack rigs everyday (separate preamp and poweramp), and the "power section" of an "all-in-one" bass amp is essentially the same thing, just both preamp and poweramp are built into one box, that's all. Plug in and play. As far as the power difference between amp and speaker....just don't crank the volume up all the way, that's all. You could use a 1000 watt amp on a 10 watt speaker if you don't turn it up too much.
     

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