Can Somebody winISD me a Quick Answer?

Discussion in 'Amps [BG]' started by walterw, Jul 7, 2013.


  1. walterw

    walterw Supportive Fender Gold Supporting Member

    Joined:
    Feb 20, 2009
    i'm using two LDS single 15 cabs, 15" by 23 1/2" by 18", each with two 4"wide ports that have 5" deep tubes.

    don whipped them up to fit two emi kappa 15As i had, and they've kicked butt for a while now for my P-bass/sansamp/power amp grindy rock playing.

    thing is, the speakers are getting a little long in the tooth, and i'm starting to hear a little crappiness in the low end when they get pushed.

    that may be from the crest LT1500 power amp i've used for years, which as far as i can tell doesn't have much in the way of low end filtering and may have just worn the poor speakers a little with too stuff below the box tuning. i just scored a PLX 3002, which i've set with the 30Hz filter on, and that's been an improvement, but i still might be due for some replacements at some point.

    so...

    will the 3015 (non-LF) play nice in these boxes? what kind of roll-off or box tuning or whatever would they have?

    [​IMG]
  2. CL400Peavey

    CL400Peavey Supporting Member

    Joined:
    Nov 7, 2011
    Media:
    11
    Albums:
    1
    Location:
    Grand Rapids Michigan
    I would contact the builder and see which drivers he suggest.
  3. Downunderwonder

    Downunderwonder

    Joined:
    Aug 26, 2009
    Location:
    New Zealand
    What about reconing them and using a proper HPF to nix the overexcursion fundamentals?
  4. walterw

    walterw Supportive Fender Gold Supporting Member

    Joined:
    Feb 20, 2009
    OK, i think i've managed to answer my own question; i downloaded the free winISD version, plugged in the specs from emi's website and the size and ports of my box, and it appears to my untrained eye that the 3015 would be OK in these boxes, but not quite as good as the regular kappa 15A (and not even the "pro" version, the cheaper "american standard" version!)

    the frequency plot shows a nice fat bump above the zero line right around 50-something Hz with the 15A (i.e., right in the middle of beefy bass guitar goodness), while the 3015 stays flat and below the line, rolling off smoothly where the 15A bumps up, and overall rolling off a little higher.

    (oh, and i think i understand why nobody jumped in with the answer for me: it wasn't challenging at all to get the program myself and plug in the numbers, but it was tedious.)
  5. Register to disable this ad

Share This Page