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dumb questions about power amps

Discussion in 'Amps and Cabs [BG]' started by GearHeadBassMan, Jun 22, 2007.


  1. I seem to be full of stupid questions, and here's another one:

    Stereo power amp, says it can handle 600w at 4 ohm /side.

    So I can hook up two 4 ohm cabs in stereo and have the amp be pushing the two 4 ohm loads seperately, or would the amp be pushing 2.6 ohms into both cabs?


    while I'm on it, I searched quickly and couldn't find an answer, how would one hook up a power/pre/cab configuration?

    if it's equipment specific, I'm looking at using a sansamp, carvin HD1800 ( http://www.carvin.com/products/single.php?ItemNumber=HD1800&CID=PWA ) into avatar b210 and b 212
     
  2. A stereo power amp is nothing more than 2 separate amps in 1 housing. Each cab would receive up to 600w @4 ohms when connected in stereo configuration.
     
  3. Spyrojoe

    Spyrojoe

    Jun 20, 2007
    As far as setup goes, you would go from the preamps line out to the input on the power amp, and then from the amp to the cab.

    I'm using a Line6 BassPod Pro->Crown XLS402->SWR GoliathIII. I'm a fan of the pre/power amp combo. Leaves you room to play with your configuration.
     
  4. pre into the power amps input section and the power amps output section in to cab(s)

    use the right cables plz.
     
  5. Thats what turned me to it, I like the fact that I can upgrade piece by piece as I find stuff that I like better. After this, who knows if I'll ever go back to a normal amp head!

    http://www.carvin.com/products/single.php?ItemNumber=HD1800&CID=PWA

    any feedback on this power amp? it seems like a great deal...
     
  6. Johnny Crab

    Johnny Crab HELIX user & BOSE Abuser

    Feb 11, 2004
    Texas
    RELAX!
    The only stupid question is the one not asked that causes problems later...

    What he said on the amp/ohms thing.
    Here are some references....
    Ohms: http://www.bcae1.com/spkrmlti.htm
    Amps: http://www.qscaudio.com/support/technical_support/faq.htm

    Connections:
    Mine(using the parallel input switch on the back of the amp):
    Line 6 BassPODXT Live-->QSC2402-->ACME B2's

    Yours would be:
    SansAmp-->Carvin Amp-->Avatars

    I'm assuming you're putting one on each side of the amp.

    Suggestions:
    When you can afford one, there is a line insert high pass filter
    [​IMG]
    that cuts stuff below 30Hz or so like a crossover does. This will help protect your speakers.
    http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=266-248

    When you can afford one, a compressor/limiter. Smooths out stuff live(if you want it to) AND allows you to turn things up so they sound louder. The manual should explain that. I use a dbx 166xL when I use my SansAmp RBI. The Line 6 has a comp. built into it I leave always on.
     
  7. I'd go with the DCMs if you can afford it. I had one of the HDs blow up (smoke and everything) less than a week out of the box. It was the HD1800 too...and the Carvin guys were jerks repairing it.
     
  8. You may have had a bad one. Although I can't aspeak on Carvin customer service (never had to use it), I can say the HD1800's are great amps for the money.

    I have 2 of them, and no problems.

    Just be aware that the HD power amps do not have speakon connectors, or limiters.

    For your hook up, the HD1800 has a push button on the back to parallel the outputs (your one line out from the pre will go to both sides of the amp).

    The HD also has two 1/4 outputs per side, so you can easily run 4 cabinets off of it.
     
  9. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

     
    Jan 24, 2021

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