3012HO build: help with high freq driver

Discussion in 'Amps [BG]' started by kucor, Feb 26, 2012.


  1. kucor

    kucor

    Joined:
    Aug 26, 2011
    Hi,

    I just bought two kappalite 3012HOs, and plan is to build two boxes in Epifani UL112 style, which means simple two way vented enclosure, 2 cu. ft. net.

    Idea was not to use twitter but some mid-high which will do spectrum from ~1,5 to 6-7KHz. I don't really see need for 10Khz or higher for bass guitar.

    I'm not really sure what is best high cut off frequency for 3012HO, so some advice with crossover frequency and choosing the second driver would be appreciated

    thanks,

    Slobodan

    http://www.eminence.com/pdf/Kappalite_3012HO.pdf
  2. will33

    will33

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    Couple ways to go about it. For the widest dispersion, off axis performance, you can cross to a 6" around 1-1.6khz. Or, choose an HF driver that can handle a 2-2.5khz crossover point and do it that way. Selenium has some nice ones. The Emi. asd1001 can handle 2500hz as well. If you don't need the real high response, plenty of 6's can run to 5-7khz on axis.
  3. rogypop

    rogypop

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    Croatia
    3012ho is perfectly capable going to 1.5 khz, my choice would be
    eminence NSD-2005 compression driver with apt 150 horn.
  4. jnewmark

    jnewmark Supporting Member

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    Play guitar.
    Not quite the same, but I have a 3012HO, 212, with an 18Sound XD125 horn, crossed at 2khz, Works for me.
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  6. kucor

    kucor

    Joined:
    Aug 26, 2011
    thanks for answers guys:)

    so, 1,6Khz should be max for 3012HO?

    I would like to avoid 6" mid. It doesn't fit into my idea of portable 12" cab

    Yeah, those PSD snd NSDs are nice, but well priced as well, ~140 euro for NSD2005. to much for me at this time.
  7. will33

    will33

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    Above that is where you're really gonna noticably lose response off axis. On axis, it'll run high enough to meet a good tweeter.
  8. rogypop

    rogypop

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    Jan 10, 2009
    Location:
    Croatia
    You COULD use eminence apt 80 and cross it around 1.8khz but it would require 3rd or even 4th order hi pass filter. Me thinks that Barefaced midget T uses 3012HO and apt 80.
  9. kucor

    kucor

    Joined:
    Aug 26, 2011
    Hi again, some time has passed, and due to lack of funds, all I done is a simple 12" cab with no additional drivers.

    Now I'm back and wanna finish this project finally.

    I figured single 3012HO lacks in low end, so idea is to put both in single 3-3,5 cu ft cab, with additional horn.

    thinking about NSD2005, APT150S horn and PXB2 crossover at 1,6KHz, but I saw someone saying NSD2005 is a overkill for bass cabs.

    any thoughts or suggestions?
  10. kucor

    kucor

    Joined:
    Aug 26, 2011

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