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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PRODUCT SPECIFICATIONS
Free Air Resonance.
(FS)
33
.35
Total Q of driver @ FS including all resistance's.
Q of driver @ FS including non electrical resistance only.
Q of driver @ FS including electrical resistance only.
(Qts)
(Qms)
(Qes)
7.01
0.37
The driver's compliance expressed as an equivalent volume
of air (Cubic Ft.).
(Vas)
(Xmax)
(Re)
1.10
.27
3.6
175
2.5
89
The driver's linear displacement (inches).
The DC resistance of the driver's voice coil (ohms).
R.M.S. Power rating of driver (Watts).
The driver's voice coil inductance (millihenries).
The drivers sensitivity (dB).
(W)
(Le)
(Sens)
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
availableinordertoachievetheproperairvolumerequired.
It is recommended to build your enclosure from 3/4” thick MDF (medium density
fiberboard). Makesuretheenclosureissealedairtight.
CalculatingExternalVolume
1.) To calculate box volume, measure the outside Width x Height x Depth of the
enclosure. Example12”x14”x9”=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 = .875 Cubic feet
CalculatingInternalVolume
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.) Nextsubtract1.5fromeachoftheoutsidemeasurementsofthebox.
Width
Height
Depth
12-1.5=10.5
14-1.5=12.5
9-1.5=7.5
3.) Multiplythenewtotals(HxWxD)Example:10.5x12.5x7.5=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 Ampplitude RResponsee (dB/Hz)
Sealed Ennclosure
12
6
F3 = 69
0
dB
-6
-12
-18
-24
5 Hz
10
50
100
500
1000
Frequuency
Ported Enclosure
Box Volume
*2.0 Cu Ft.
40Hz
Port Frequency (Fb)
Port Diameter
Port Length
4 Inches
7.7 Inches
* Box is given as internal air volume including port and driver displacement.
CZ12 Ampplitude RResponsee (dB/Hz)
Ported Ennclosure
12
6
F3 = 43
0
dB
-6
-12
-18
-24
5 Hz
10
50
100
500
1000
Frequuency
CZ12 REV 2.06.03
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