DJ Poweranp for Bass Rig?

Discussion in 'Amps and Cabs [BG]' started by Count Bassie, Jun 11, 2020.

  1. Hi all. I'm looking at a Pyramid XPA 480 power amp. I don't know the reliability of the numbers- 4800 watts... fine... but I've got a nice preamp and need a power amp this one comes in at a friendly price so I'm considering it.
    I can take it home and try it, but I know there are specs beside power to think about.
    Anyone heard of it?
    Thanks for your time...

    Attached Files:

  2. BassmanPaul

    BassmanPaul Inactive

    Please don't buy anything with that amount of power. It more power than you can use and your speaker systems won't like you. :)

    Pyramid are, I believe, at the low end of the quality range. There are a plethora, I like that word :D, of Stereo power amps in the 1 to 2KW range that are better suited for commercially available speaker cabinets.
  3. ezstep


    Nov 25, 2004
    north Louisiana
    Agreed. Plenty of power amps (stereo or mono) under 1000 wts that will more than satisfy.

    I bought a used QSC a while back, 1600 wts. I have been running it (mostly four floor monitors) for about 14 years now. I have a different QSC for subs. There are plenty of "good" power amps out there. Pyramid is not one of them (in my humble opinion).
    DrMole and Count Bassie like this.
  4. Thanks for the replies, much appreciated.
  5. abarson


    Nov 6, 2003
    Santa Cruz
    Pyramid was always very cheap equipment, especially for auto audio, like Pyle.
    @BassmanPaul you can relax: that's 4800w PEAK when in bridged mode, said the marketing guy.
    Still a ridiculous and irrelevant number, but hey, the masses like "moar".
    It's more like 260 watts x 2 in stereo at 4 ohms, 440 watts bridged mono at 8 ohms.

    Even if you are just going to try it at home, you really need the manual.
  6. Nice, thank you.
  7. Jeff Hughes

    Jeff Hughes

    May 3, 2020
    This reminds me of those power amps you can buy on Amazon that are 75 dollars but 80,000 watts. How do they do it?

    Why not just get a basic rack bass amp and run your preamp, if that is what you are using, into the power amp in of the amp?

    I used to run a Peavey Tmax pre into a Crown CE2000. I guess it sounded ok.
    byacey likes this.
  8. Because it was cheap, and I'm asking about it.
    I have the pre, and 2x 4 ohm cabs. A power amp seems a pretty efficient/elegant (?) Solution.
    QweziRider and Plastalmonus like this.
  9. abarson


    Nov 6, 2003
    Santa Cruz
    GTD seems to have a slightly better reputation than Pyramid, and if you look at the actual power ratings (instead of peak) these two amps are very similar. That said, I can't find a manual for it, not even on the GTD Audio website. I wouldn't buy an undocumented/unsupported piece of equipment. $150 is also more than what they go for new.
    Power Amplifiers - GTD Audio
  10. And I

    And I

    Feb 19, 2009
    Witchtown, MA
    To save money check the TB classifieds. But definitely get a decent power amp. Quality and price will come together for you. Better to pass on cheap poweramps with bad THD ratings and unrealistically high wattage ratings.
    DrMole and Count Bassie like this.
  11. The amp in question is referenced here...
    Reasonable advice all-around, I think.

    Thanks everybody!
  12. Breeze3


    Sep 10, 2003
    Look for used QSC , Crown or Carvin power amp , they are much better quaility than what you are looking at IMO.
  13. JW56789

    JW56789 Guest

    Feb 18, 2017
    Just try and find a PROFESSIONAL sound reinforcement contractor that uses either of the two you mentioned. Ain't happening, except maybe for some guy at your brother-in-law's company Christmas party or maybe down at the Catholic Bingo. You want Crown, Crest, Yamaha, QSC, and these days with Class D power, offshore production, and the general trend toward powered cabinets, rack mount power is cheaper than it's ever been, especially if you carefully shop for barely used.

    You need real (not pie in the sky 4800 whats ?) power from a professional build quality amp for bass, the hardest of all program material to push authoritatively and cleanly. I could not recommend those two for anything where I depended on them to perform in a professional situation, and depend on them to let me make a living.

    There's a big difference in playback of recorded, mastered, and relatively limited dynamic range material like CD's or downloads, and bass guitar driving real cabinets with all the huge spikes in what the bass is sending down the wire.

    It's up to you. A lot of times, there's a big difference between cheap and inexpensive, as usually, cheap will bite you in the ass at the worst possible moments.
  14. Redbrangus

    Redbrangus Supporting Member

    Nov 19, 2018
    Under The X In Texas
    I second this. There are plenty of cheap serviceable pro PA amps in the used market. Good commercial power amps last more-or-less forever, but companies turn over inventory for a variety of reasons so there should be something real to be had for cheap if you shop around. Crown, QSC, Crest...and nothing that has crazy, "come-on" advertised power ratings -- that's a sure sign of snake-oil selling.
    Count Bassie likes this.
  15. Tim Skaggs

    Tim Skaggs

    Sep 28, 2002
    4800 watts is a peak number when bridged. Realistic numbers are below.
    • PEAK=1600x2 8-OHM
    • RMS = 260x2 4-OHM/0.5%
    • RMS = 230x2 8-OHM/0.5%
    • MONO= 440x1 8-OHM/0.5% (PEAK MONO=4800x1)
    From prices I see on line, they must not be much about which to get excited. I saw a couple places where they were $189.
    Count Bassie likes this.
  16. Eddie LeBlanc

    Eddie LeBlanc

    Oct 26, 2014
    Beaumont, Texas
    Don't create no problem, won't be no problem.
    You ought to be able to find a Crown XTI 1000 or a Crown XLS 1500 easily. Both great amps, reputable, not overly heavy, and plenty of power for a Bass Amp.
    I have used both before and still own both.
    Count Bassie and Mingo Sanders like this.
  17. Eddie LeBlanc

    Eddie LeBlanc

    Oct 26, 2014
    Beaumont, Texas
    Don't create no problem, won't be no problem.
  18. I've seen all these, and am just taking the bottom to see if I can find a "stupid deal" or discover something cool... thanks for the links, all being considered. Glad I posted anyway, learning is a fine thing- so is getting advice that leans to better sense anyway!