Peavey black widow 15 question

Maydayzero

Maydayzero

Active Member
So I have 2 black widow 15's and I was thinking about maybe using them with my current system. Just wondering what everyone's thoughts are.

My system right now is a pioneer sa-9500ii paired with hpm-60's.

Just wondering what the quality would be like. Was going to make 2 cabinets to hold each 15.
 
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Assuming you are going to use as subwoofers...you will need rather large boxes and may not dig as deep as you would like for hi-fi use...but will go loud enough to cause brain damage :beerchug:
 
Maydayzero said:
What would be a good enclosure to use. Currently they are in cabinets similar to this. Was thinking about either rebuilding or cleaning up the with some vaneer.
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Ideally you need the full specs of the driver to calculate the size box you would need - and this would also determine if ported/sealed in the best option.

The specs would need to to include resonant freq, compliance volume, q etc.

Unless you can find info online from someone who would know a good cabinet design to build, that you could just copy.
 

Product Measurements
Cone Composition Kevlar-impregnated cellulose
Continuous Power Rating 350 W
Diameter 15 in.
Diaphragm Area (SD) 8.4 cm2
Electrical Q Factor (Qes) 0.414
Equivalent Acoustic Volume (VAS) 164.3 liters
Force Factor (BxL) 16.9 Wb/m
Free Air Resonance (Fo) 46.5 Hz
Impedance 8 Ω
Linear Displacement, maximum (XMAX) 5.1 mm
Maximum Linear Displacement (XMAX) 2.7 mm
Mechanical Compliance (CMS) 164.0 µm/N
Mechanical Moving Mass (MMS) 71.4 g
Mechanical Q Factor (QMS) 6.50
Output Power, maximum (Pmax) 700 W
Peak Power Rating 1400 W
Program Power Rating 700 W
Reference Efficiency (nO) 3.90 %
Sensitivity 97.9 dB
Sensitivity @ 1W, 1m 97.9 dB
Total Q Factor (QTS) 0.389
Usable Frequency Range 40 Hz - 2 kHz
Voice Coil DC Resistance (Re) 5.67 Ω
Voice Coil Diameter 4 in.
Voice Coil Inductance @ 1 kHZ (LE) 0.32 mH
Volume Displacement 197 in3
 
The QTS is such you could use them sealed or vented. These drivers were used in high power sound reinforcement or bass guitar amplifiers. The baskets and cones are easily replaceable. The current cabinets are called scoops and they're vented for max power output.
 
regore said:
The QTS is such you could use them sealed or vented. These drivers were used in high power sound reinforcement or bass guitar amplifiers. The baskets and cones are easily replaceable. The current cabinets are called scoops and they're vented for max power output.
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Do you have any suggestions as to what would be a good enclosure to use for home stereo applications?
 
5 cu. feet should be adequate. Port tuning would be 48hz. F3 would be about 49 hz. with a QB3 alignment @ QL of 7 (assumed). These drivers were designed for sound reinforcement. There are much better choices for subs but these would work good for woofer duty.
5 cu. ft. in a sealed box would yield a QTC of .577 (very clean) but F3 goes up to 69 hz. For a QTC of .707 you only need about 3 cu. ft. with F3 of about 84 hz. Calculations were generated from Loudspeaker Design Cookbook Vol. 4. As you can see vented cabinets give a much lower F3. Good luck in your project.
 
Yeah, if you are looking for mid-bass chest punch and slam these might be the ticket. If you are looking for that deep rumble, gut-wrenching bass then I think not.
 
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