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CZ12 12” Subwoofer
Installation Instructions / Owner's Manual
By
PROFILE CONSUMER ELECTRONICS, INC.
15060 SHOEMAKER AVE
SANTA FE SPRINGS, CA 90670
TEL: (562)404-9393 FAX: (562)404-9433
WWW.PROFILEUSA.COM
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INTRODUCTION
Congratulations on your purchase of a California state-of-the-art subwoofer
component. Your selection of a California car audio product indicates a true
appreciation of fine musical reproduction. Whether adding to an existing system or
including a California subwoofer in a new system, you are certain to notice immediate
performance benefits.
KEEP YOUR SALES RECEIPT
Take this time to attach your sales receipt to the manual and put in a safe place. In
case of any unforeseen reason this product may need warranty service, your receipt
will be necessary to establish purchase date.
RECOMMENDATION
A speaker's performance is only as good as its enclosure. Proper installation,
enclosure size and crossover frequency will maximize the overall performance of the
subwoofer. To properly design and build an enclosure, knowledge of woodworking as
well as the proper tools are required. We highly recommend that you have your
enclosure built by an authorized Profile retailer. However, if you decide to install it
yourself, we have included the parameters of each driver and recommended
enclosure sizes.
WARNING!
WARNING!
California subwoofers are capable of high sound pressure levels. Exposure to
California subwoofers are capable of high sound pressure levels. Exposure to
high sound pressure levels can cause hearing loss or damage. Listening to your
high sound pressure levels can cause hearing loss or damage. Listening to your
system at loud levels while driving, will impair your ability to hear traffic
system at loud levels while driving, will impair your ability to hear traffic
sounds and emergency vehicles. Use common sense when listening to your
sounds and emergency vehicles. Use common sense when listening to your
system.
system.
When installing your subwoofer enclosure in the vehicle, fasten it securely
When installing your subwoofer enclosure in the vehicle, fasten it securely
to the frame or floorpan. If the enclosure is not secured properly, there
to the frame or floorpan. If the enclosure is not secured properly, there
is danger of it becoming a projectile in a collision
is danger of it becoming a projectile in a collision
Due to continuing product improvement, specifications and design are subject to change without notice.
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PRODUCT SPECIFICATIONS
Free Air Resonance. (FS) 33
Total Q of driver @ FS including all resistance's. (Qts) .35
Q of driver @ FS including non electrical resistance only. (Qms) 7.01
Q of driver @ FS including electrical resistance only. (Qes) 0.37
The driver's compliance expressed as an equivalent volume
of air (Cubic Ft.). (Vas) 1.10
The driver's linear displacement (inches). (Xmax) .27
The DC resistance of the driver's voice coil (ohms). (Re) 3.6
R.M.S. Power rating of driver (Watts). (W) 175
The driver's voice coil inductance (millihenries). (Le) 2.5
The drivers sensitivity (dB). (Sens) 89
CALCULATING ENCLOSURES
It is difficult to give exact box dimensions that are universal for all cars and trucks.
It is for this reason that you must be able to calculate the space in which you have
available in order to achieve the proper air volume required.
It is recommended to build your enclosure from 3/4” thick MDF (medium density
fiberboard). Make sure the enclosure is sealed air tight.
Calculating External Volume
1.) To calculate box volume, measure the outside Width x Height x Depth of the
enclosure. Example 12” x 14” x 9” = 1512”.
2.) Next you must convert cubic inches into cubic feet. To do this, you must divide
the cubic inch total by 1728”. Example 1512 1728 = .8 75 Cubic feet
Calculating Internal Volume
1.) To calculate the internal (net) volume of the above box you must first multiply
the thickness of the wood you are using by Two (2). Example 3/4” x 2 = 1.5”.
2.) Next subtract 1.5 from each of the outside measurements of the box.
Width Height Depth
12-1.5=10.5 14 -1.5 = 12.5 9 -1.5 = 7.5
3.) Multiply the new totals (H x W x D) Example: 10.5 x 12.5 x 7.5 = 984.375
4.) Next you must convert cubic inches into cubic feet. To do this, you must
divide the cubic inch total by 1728” Example 984.375 1728 = .5696 Cubic
feet.
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RECOMMENDED ENCLOSURES
Please Note: Our suggested box volumes are given as internal air requirements
Sealed Enclosure
Box Volume * 1.0 Cu Ft.
* Box is given as internal air volume including driver
Displacement.
CZ12 Amplitude Response (dB/Hz)CZ12 Amplitude Response (dB/Hz)
1212
66
00
dBdB
-6-6
-12-12
-18-18
-24-24
5 Hz5 Hz 1010 5050 100100 500500 10001000
Ported Enclosure
F3 = 69F3 = 69
FrequencyFrequency
Sealed Enclosure Sealed Enclosure
Box Volume *2.0 Cu Ft.
Port Frequency (Fb) 40Hz
Port Diameter 4 Inches
Port Length 7.7 Inches
* Box is given as internal air volume including port and driver displacement.
CZ12 Amplitude Response (dB/Hz)CZ12 Amplitude Response (dB/Hz)
1212
66
dBdB
00
-6-6
-12-12
-18-18
-24-24
5 Hz5 Hz 1010 5050 100100 500500 10001000
F3 = 43F3 = 43
FrequencyFrequency
Ported Enclosure Ported Enclosure
Manual By
www.extremeconcepts.com
CZ12 REV 2.06.03
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