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Old 14th March 2009, 04:59 PM   #1
diyAudio Member
Join Date: Mar 2009
Smile Black Widow 4ohm Help PLSS Newbie

Hi all.
Great site very helpfull.

Heres My Problem.........

I have a pair of HK LP15 Bass Bins 300WRMS 600WPROG (8 OHM) 1 x 15inch driver in each, the drivers are now a little worn and not in the best condition.

I have aquired 2 nearly new 15inch Peavey Black Widow drivers these are rated at 4 Ohm each 350w RMS.

Would I be able to take the old HK drivers strait out and put in the black widows? and bin off the HK's.

Will they work fine with the internal crossover? in the HK Enclosures.

Will it make any diff using 4 OHM driver with the HK internal crossover that usualy does 8 Ohm?

Do you think it will sound any good?


The bass bins run purely off there own amp as in 1 bass bin to each channel the amp is a peavey 2x400w (or 2x600w@4ohms) (cs800 amp)

so my thinkin 4ohm drivers coupled with an amp that runs better at 4 ohms............

My top full range cabs run off a diffrent amp all together.

Thanks Again
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Old 14th March 2009, 05:33 PM   #2
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Join Date: Mar 2009
BTW they are used for Genral and dance sorta music And they are the black widow 15inch 4 OHMs

Thanks Again
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Old 14th March 2009, 10:24 PM   #3
fotios is offline fotios  Greece
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Join Date: Feb 2007
Location: Δραμα - North Greece

If your HK bass bins include passive x-overs to give Hi outputs for satelittes and to cut high frequency part from bass drivers... and because the original HK bass drivers are 8, then if you connect 4 drivers in x-over, its cut-off frequency should be doubled... e.g. if was 200Hz with 8 load, with 4 load will become 400Hz. If you haven't audition problem with this, then there is not any significant electronic problem except this, your CS800 will be run most hot and maybe you have occasional thermal shut-down .

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