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Old SP2 crossover question

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  • Old SP2 crossover question

    Hey guys,
    I am having a heck of a time trying to find a crossover schematic for the old 800hz crossover on these old Peavey relics. Anyone have any ideas? I am trying to trace the PCB, but there is a transformer in the circuit I am assuming as a dual inductor but has no value and a cap that seems to do nothing, but I am sure that is not the case.
    As for why, I am trying to see if it is feasible to shift the x over up to 1500hz as in the newer models, and accomodate a Selenium D220ti for the tweeter. I know that is FAR from ideal, but it is what I have and if it works marginally I will be ok with it. I tried it with the stock xover, it sounded ok but of course fried the diaphragm within a few hours use as expected. Much too low x over for high power use in that horn. Thanks for any help, I am willing to do the trial and error just need a baseline for reference. I do have pics of the crossover if needed.
    Last edited by jsaults; 08-22-2013, 01:25 PM.

  • #2
    Re: Old SP2 crossover question

    I found 2 schematics on a Peavey forum, perhaps they might be of use. The Selenium horn uses a suggested crossover of 2KHz, so I would definitely go no lower if you have any intention of pushing the speaker. The site is http://forums.peavey.com/viewtopic.php?f=26&t=24984, look towards the bottom for a message from noelmem1. The series 5 crossover schematic should get you where you want to be.

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    • #3
      Re: Old SP2 crossover question

      Thank you that looks right!

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