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Summary of Contents for Crunch GRP12D4
- Page 2 CRUNCH GROUND POUNDER GRP SERIES CAR AUDIO SUBWOOFERS Congratulations on your purchase of the new CRUNCH Ground Pounder GRP Series subwoofer system. The GRP subwoofer series offer incredible output, great sound quality and outstanding good looks. 12-Inch DVC / SVC Subwoofer...
- Page 3 SUBWOOFER INSTALLATION AND WIRING DIRECTIONS Enclosure Materials Typically, 5/8” or 3/4” MDF (Medium Density Fiber Board) is best for most applications. 3/4” MDF is recommended. Enclosure Build Materials Connecting joints need to be glued and screwed to ensure no air escapes and joints do not separate under high pressure. Mitered and rabbit joints also help to ensure the enclosure joints are secure.
- Page 4 GROUND POUNDER GRP SERIES SUBW OOFERS Param eters GRP12S4 GRP12D4 W iring SERIES Coils Nom Z 4.44 9.12 0.051 0.051 Revc 10.18 13.73 60.4 60.5 Liter 160.6 160.9 uM/N Cm s Mm s 122.4 117.1 Gram s 35.88 36.37 Qm s 7.84...
- Page 5 Glossary of Terms The energy losses of relative damping (ratio of stored to dissipated energy or ratio of reactive to resistive energy). 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.
- Page 6 GRP12S4 SVC 4-Ohms 4-Ohms PARALLEL 2-Ohms SERIES 8-Ohms...
- Page 7 GRP12D4 DVC 4-Ohms PARALLEL SERIES 8-Ohms 2-Ohms PARALLEL COILS / PARALLEL SUBS 1-Ohm SERIES COILS / PARALLEL SUBS 4-Ohms...
- Page 8 SUBWOOFER DIMENSIONS 5.7” / 144mm Mounting Depth When designing an enclosure for this subwoofer, please ensure to leave atleast 2” of clearance from the back of the motor to the back of the enclousre.
- Page 9 Maxxsonics Limited Warranty As the manufacturer of Maxxsonics, MB Quart, Autotek, Crunch and Hifonics car audio products, Maxxsonics USA Inc. Warrants to the original consumer purchaser the amplifier to be free from defects in material and workmanship for one (1) Year from date of purchase.
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