out to speakers and sub amp, can I attach another set of drivers to the amp out?

Discussion in 'Archived Threads 2001-2004' started by Manuel Delaflor, Oct 1, 2002.

  1. Manuel Delaflor

    Manuel Delaflor Supporting Actor

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    I have the speaker out from my integrated amp directly attached to my mains, but I also use another set of cables from the speaker out of the integrated to the high level inputs of my sub's amp to feed it (I get higher dB's by connecting the sub this way instead of using the pre-outs).

    My question is if I can use the high level outputs from the sub's amp to feed another set of drivers? (in particular some tweeters with its own crossover)

    My main concern is that they are only 4 Ohm's. In case you wonder why do I want to do this is because I want to experiment by putting the tweeters on the back of my mains trying to replicate the sound of a dipole.

    Im just experimenting, for the fun of it, but want to be sure I won't damage my amplifier :b
     
  2. Manuel Delaflor

    Manuel Delaflor Supporting Actor

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    Does someone have an answer...? [​IMG]
     
  3. Dustin B

    Dustin B Producer

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    I'm not 100% certain of my answer or if I understand what you are describing correctly, but I think the answer is no.

    Doing that will essentially be hooking the new tweeter up in parallel with the speaker (the speaker level outputs on a plate amp are just the speaker level inputs sent back out but after being passed though a crappy high pass filter). So a 4ohm load in parallel with your 8ohm (I assume this is your Heresy). So unless you amp can handle a 2.5ohm load, I don't think it will work.
     
  4. Manuel Delaflor

    Manuel Delaflor Supporting Actor

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    Thanks Dustin, that's also what I think. But I need to be a 100% sure.

    I would also like to consider alternatives to make it work, such as to introduce an additional resistor.
     
  5. If it was an 8ohm tweeter you should be fine. Since the 4ohm drop will only be in the tweeter range, an 8ohm stable amp should be able to handle the 4 ohms if it s just in the tweeter (I could be wrong, so YMMV)
     
  6. Patrick Sun

    Patrick Sun Studio Mogul

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    Introducing a resistor just burns more power across the resistor and reduces SPL output.
     
  7. So does an L-pad [​IMG]
    a single resistor is often used in series XO's instead of an L-Pad.
     

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