Peavey Black Widow 18" PA subwoofer design

alberto82 · 9th January 2012, 02:21 PM

Hi all,
I recently found in my basement a 18", 8 ohms Peavey Black Widow loudspeakers, and I would like to build up a subwoofer to complete my dj setup. Do someone have some suggestion about the cabinet to build? I'd like to promote power handling, since I will use it for some dj sets.
Here are the specs of the Black Widow:
http://www.peavey.com/assets/literat...s/80300801.pdf

This sub will work with two Peecker Sound 4012MH loudspeakers (http://www.peeckersound.com/en/Forty/4012MH-4012MH-A).

Thank you all!

GloBug · 9th January 2012, 02:41 PM

Well you have the spec sheet so it should help you design a box.

Just be sure the woofer is good, I had a 12" widow that is on my list of all-time worst reliable speaker. It had many temporary failures, something to do with the ribbons going to the voice coil.

I finally gave up and built the amp into a new cabinet with 2 x 12" Celestions.

I'm not saying yours is bad, just give it a good once over before designing a custom cabinet for an 18" woofer, unless you can replace the woofer with another 18" from a different brand.

ltdf · 9th January 2012, 05:22 PM

That driver is used in a 9 cubic foot cab tuned to 42Hz. The port is 14"W x 3"H x 3/4"L. http://www.peavey.com/media/pdf/manuals/118subhc.pdf The replacement basket PN is 1801-8 LT RB and costs about USD $100.00 online.

alberto82 · 9th January 2012, 07:29 PM

Thanks very much for your answers! The woofer is in a very good condition, I am testing it right now as a dipole and it seems working well. I will try it with this suggested box.
Thanks again!

ltdf · 9th January 2012, 08:38 PM

Forgot to add that if the vented pole pieces have the foam filter, remove it. The foam will deteriorate with age and get sucked into the voice coil gap. http://forums.peavey.com - BW Foam Goo in Pole Piece

GloBug · 9th January 2012, 09:09 PM

Maybe that happened to me.
I should add I had a 15", not a 12".

mdocod · 10th January 2012, 12:05 AM

do you have the 4 or 8 ohm version? The T/S parameters are quite a bit different between the 2. .

ltdf · 01:44 AM

Quote:

Originally Posted by mdocod

do you have the 4 or 8 ohm version? The T/S parameters are quite a bit different between the 2. .

Quote:

Originally Posted by alberto82

Hi all,
I recently found in my basement a 18", 8 ohms Peavey Black Widow loudspeakers,..

alberto82 · 10th January 2012, 11:13 AM

I have the 8ohm version. I don't know if the foam is still there... I will check!
One last question: is this loudspeaker suitable for a bandpass design? I prefer to have the loudspeaker inside the enclosure, to avoid damages.

Thanks!

ltdf · 11th January 2012, 10:10 AM

IIRC the .61 QTS may be too high for a 6th order BP. Whatever cab you design, note that the replacement basket has different T/S parameters. I would suggest modeling both.

http://www.peavey.com/assets/literat...6629_13615.pdf

The 1801-8 and the newer 1801-8 LT (Long Throw), as well as the 4 ohm 1801-4 and 1801-4 LT, are compatible with the 9 ft BR cab in the post #3 above.

9th January 2012, 02:21 PM	#1
alberto82 diyAudio Member Join Date: Jan 2012	Peavey Black Widow 18" PA subwoofer design Hi all, I recently found in my basement a 18", 8 ohms Peavey Black Widow loudspeakers, and I would like to build up a subwoofer to complete my dj setup. Do someone have some suggestion about the cabinet to build? I'd like to promote power handling, since I will use it for some dj sets. Here are the specs of the Black Widow: http://www.peavey.com/assets/literat...s/80300801.pdf This sub will work with two Peecker Sound 4012MH loudspeakers (http://www.peeckersound.com/en/Forty/4012MH-4012MH-A). Thank you all!

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9th January 2012, 02:41 PM	#2
GloBug Banned Join Date: Jun 2011	Well you have the spec sheet so it should help you design a box. Just be sure the woofer is good, I had a 12" widow that is on my list of all-time worst reliable speaker. It had many temporary failures, something to do with the ribbons going to the voice coil. I finally gave up and built the amp into a new cabinet with 2 x 12" Celestions. I'm not saying yours is bad, just give it a good once over before designing a custom cabinet for an 18" woofer, unless you can replace the woofer with another 18" from a different brand.

9th January 2012, 05:22 PM	#3
ltdf diyAudio Member Join Date: Aug 2011	That driver is used in a 9 cubic foot cab tuned to 42Hz. The port is 14"W x 3"H x 3/4"L. http://www.peavey.com/media/pdf/manuals/118subhc.pdf The replacement basket PN is 1801-8 LT RB and costs about USD $100.00 online.

9th January 2012, 07:29 PM	#4
alberto82 diyAudio Member Join Date: Jan 2012	Thanks very much for your answers! The woofer is in a very good condition, I am testing it right now as a dipole and it seems working well. I will try it with this suggested box. Thanks again!

9th January 2012, 08:38 PM	#5
ltdf diyAudio Member Join Date: Aug 2011	Forgot to add that if the vented pole pieces have the foam filter, remove it. The foam will deteriorate with age and get sucked into the voice coil gap. http://forums.peavey.com - BW Foam Goo in Pole Piece

9th January 2012, 09:09 PM	#6
GloBug Banned Join Date: Jun 2011	Maybe that happened to me. I should add I had a 15", not a 12".

10th January 2012, 12:05 AM	#7
mdocod diyAudio Member Join Date: Dec 2011 Location: Black Forest, CO	do you have the 4 or 8 ohm version? The T/S parameters are quite a bit different between the 2. .

10th January 2012, 11:13 AM	#9
alberto82 diyAudio Member Join Date: Jan 2012	I have the 8ohm version. I don't know if the foam is still there... I will check! One last question: is this loudspeaker suitable for a bandpass design? I prefer to have the loudspeaker inside the enclosure, to avoid damages. Thanks!

11th January 2012, 10:10 AM	#10
ltdf diyAudio Member Join Date: Aug 2011	IIRC the .61 QTS may be too high for a 6th order BP. Whatever cab you design, note that the replacement basket has different T/S parameters. I would suggest modeling both. http://www.peavey.com/assets/literat...6629_13615.pdf The 1801-8 and the newer 1801-8 LT (Long Throw), as well as the 4 ohm 1801-4 and 1801-4 LT, are compatible with the 9 ft BR cab in the post #3 above.

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