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Anywhere I can find t/s specs for a Yamaha 8" driver XZ951AO ?

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  • Anywhere I can find t/s specs for a Yamaha 8" driver XZ951AO ?

    A buddy of mine took it out of an old sub he had, The cabinet is long gone but he asked me to design a new cab for him. (Even if he had the old cab I'm not assuming it was the "ideal" size for this driver)

    I just need the t/s parms and I'm good to go. I don't think measuring the one he has is an option. Neither of us have the measurement tools and he's also 1200 miles away from me

    Anybody know where I might be able to find such info?

  • #2
    If they never offered it as a lone driver then you probably wont find official specs on it. Only other thing would be getting lucky and finding a post on some forum where someone measured it themself.

    Looks like that came out of a Yamaha yst-sw45. The external dimensions are listed Width 235mm x Height 365mm x Depth 318mm ​However there is a pretty thick grill on the front.. guessing about 1.5" thick just looking at photos.

    I saw some photos with the grill off and looks like it was ported. No clue on port dimensions though.
    I'm certainly not good at this. Just stubborn enough to keep going.


    • #3
      Iv'e measure several dozen commercial budget subwoofer drivers and came to the conclusion manufacturers do not care about T/S parameters all that much. I have also found several schematics for budget commercial drivers and they have all used a combination of bass boost plus a notch or two to presumably get the desired response. The commercial guys have us beat, there. At least at the budget level.

      Were it me, I would look for the same subwoofer with a smoked driver or Ebay this driver and use the funds towards a known entity.
      Don't listen to me - I have not sold any $150,000 speakers.


      • #4
        If 1200 mi. puts him in NE Wisconsin, then I could probably measure it for you?