Crunch Powerzone PZ12D4 User manual

SUBWOOFERS
PZ12D4
PowerZone

POWERZONE SERIES
CAR AUDIO SUBWOOFERS
Congratulations on your purchase of the new Crunch
POWERZONE Series subwoofer. The PZ subwoofers have been
designed to be a great addition to any car audio installation
without breaking the bank.
As with all high quality car audio products, we recommend
professional installation by an authorized Crunch dealer.
Your dealers knowledge and experience can ensure a problem
free and cosmetically integrated installation.
If you choose to install the subwoofers yourself, please read the
entire manual very carefully.
12” Round Subwoofers
Carbon Fiber Treated Dust Cap and Rigid Polypropylene Cone
UV Resistant Foam Surround
R2S (Resin Reinforced Spider)
Stamped Steel Basket
1.5” High Temp Voice Coil
DVC 4-Ohm
Spade Style Speaker Terminals
High Energy Vented Motor
Protective Motor Cover
Operates In Sealed & Ported Enclosures

DVC 4-Ohm Coil Wiring
-
+
SERIES COILS
1+ 1-
2- 2+
8-Ohms
SERIES COILS / PARALLEL SUBS
1+ 1-
2- 2+
-
+
-
+
1+ 1-
2- 2+
2.66-Ohms
-
+
1+ 1-
2- 2+
1 2 3
SERIES COILS / PARALLEL SUBS
1+ 1-
2- 2+
-
+
-
+
1+ 1-
2- 2+
2-Ohm
1 2
-
+
1+ 1-
2- 2+
3
-
+
1+ 1-
2- 2+
4
PARALLEL COILS
-
+
1+ 1-
2- 2+
2-Ohms
1+ 1-
2- 2+
SERIES COILS / PARALLEL SUBS
-
+
-
+
1+ 1-
2- 2+
4-Ohms
1 2
PARALLEL COILS / PARALLEL SUBS
1+ 1-
2- 2+
-
+
-
+
1+ 1-
2- 2+
1-Ohm
1 2

Q The energy losses of relative damping (ratio of stored to dissipated
energy or ratio of reactive to resistive energy).
Fs Free air resonance of driver in Hz.
Qms Mechanical Q.
Vas Volume of air equivalent to driver from the rest position.
Cms Mechanical compliance of a loud speaker piston.
Mms Moving mass of total loud speaker piston assembly.
Xmax The maximum linear excursion of a loud speaker.
Sd Surface area of the cone.
Dia The piston diameter of a loud speaker.
Qes Electrical Q of a system.
Re DC resistance.
Le VC inductance.
Pe Maximum input power.
Qts Total Q of the system.
Sens Sensitivity. An efficiency measurement in dB’s.
Vc Volume of a closed or sealed enclosure
Vb Volume of a vented enclosure.
Fc The resonant frequency of a closed or sealed system
Fb The resonant frequency of a vented system
F3 The half-power (-3dB) frequency of a loud speaker enclosure
Qtc The Q of a loud speaker at Fc in a closed box, considering both
it’s electrical and mechanical resistance.
QL The Q of a vented box, resulting from all box losses.
DV Diameter of vent.
LV Length of vent.
H Height.
W Width.
D Depth
Glossary of Terms

Subwoofer Dimensions
308mm / 12.13”
15mm / 0.59”
125mm / 4.92”
277.6mm / 10.93”
CRUNCH AMPLIFIERS CAR AMPLIFIERS