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Which PA to use?

Discussion in 'Pro Audio Equipment' started by Shakuan, Aug 19, 2004.

  1. Shakuan

    Shakuan Guest

    Ok here's the deal. Let's say I wanna power a 300Wrms 8ohms bass guitar speaker and a pair of 150Wrms 16ohms guitar speakers in parellel (so 300Wrms@8ohms if I'm not mistaken).

    That's 2 channels at 300Wrms 8ohms each.

    Now they say it's best to have a power amp that gives you double the Wrms of the speakers. So I would need a stereo power amp that gives me 600Wrms per channel, right?...

    And that's exactly what the Crown CE 4000 does.

    The Crown CE 4000 is priced at 1075$ and the CE 1000 is at 395$.

    Link for the CE 1000: http://www.djdeals.com/crownCE1000.htm

    The CE 1000 can operate in bridge mono and give me 900W @ 8-ohm.

    So if I buy a pair of CE1000 and wire them both in bridged mono, I get 2 channels of 900W@8ohms for 2*395$. That's almost 300$ less than the CE4000 that's good for 2 channels of 600W@8ohms only.

    If everything above is alright,
    now here's my question:

    Is there a "con" I fail to see or is getting a pair of CE1000 instead of a single CE4000 really a good idea? (rackspace isnt an issue in my case). Do I really get more power for less money or am I missing something?

    Thanks in advance!
  2. AudioGaff

    AudioGaff Distinguished Member

    Feb 23, 2001
    Silicon Valley
    Cons: You now have two power amps instead of one that takes up more space, more total weight, uses two power outlets, will likely draw more current and eat more watts of consumed power, and they each will be running at all times near the full output capability if used in bridged mode so you have less peak/headroom available. But other than that, it should work for you.
  3. Shakuan

    Shakuan Guest

    I don't understand when you say "they will each be running near the full output capability if used in bridged mono so you have less peak/headroom available."

    Bridged mono would give me 900W available instead of only 600W in the other case. Doesn't 900W automatically give me more peak/headroom than 600W for the same speaker?

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