Wednesday, July 15, 2015

JBL GT-BassPro12 Powered car subwoofer - Wiring Diagram - Circuit Diagram

Wiring diagram _ Circuit Diagram _ Specifications – JBL GT-Basspro 12
Amplifier power: 150 watts RMS; 450 watts max power
Frequency response: 35Hz – 120Hz
Fuse rating: 25A
Max current draw: 13.5A.  Idle current draw: <500mA
Input sensitivity: 50mV – 4V (line-level input); 0.4V – 16V (speaker-level input)
Crossover frequency: 70Hz – 120Hz
Crossover slope: 12dB
Dimensions (W x H x D): 22-7/16” x 14-1/2” x 12” [(570mm x 369mm x 305mm)]
Weight: 38.6 lb (17.5kg)
The JBL GT-BassPro12 is equipped with two line-level (RCA) input connectors and a high-level input connector. Consult the following system application diagrams to help you plan the installation of your GTBassPro12.
Car audio system’s head unit has front or rear stereo line level outputs:
Use a stereo RCA audio cable (not supplied) to connect the GTBassPro12’s line-level input connectors to the head unit’s front or rear left and right line-level outputs.
Car audio system’s head unit has a line-level subwoofer output:
If the head unit has a line-level subwoofer output, you can connect it to either of the GT-BassPro12’s line-level input connectors.
Car audio system’s head unit does not have line-level outputs:
Connect the GT-BassPro12’s high-level inputs to either the front or the rear speaker outputs of your car audio system’s head unit (splice crimps not included). Make sure to connect the car audio system’s “+”
speaker wires to the “+”wires on the GT-BassPro12’s high-level input wiring harness (the gray and white leads without stripes); connect the car audio system’s “–” speaker wires to the “–” wires on the GT-BassPro12’s high-level input wiring harness (the leads with black stripes). Use least #20 AWG (0.8128mm) speaker wire for speaker-level input connections.

Connecting the power and ground
Use at least #12 AWG (2.052mm) wire for the positive battery (“+12V”) and ground (“GND”) connections. Connect the GT-BassPro12’s “+12V” terminal directly to the battery’s “+” (positive) terminal. Install a fuse holder with a 20A fuse within 18” (46cm) of the battery’s “+” terminal.
Route all power wires through grommets in the vehicle’s firewall. If factory grommets are not available, install grommets yourself. Connect a short ground wire from the GT-BassPro12’s ground terminal to the
nearest bare metal surface on the vehicle. For a good connection, use sandpaper to clear the paint from the metal surface and use a screw with a lock (star) washer.
Remote turn-on connection
When using the line-level input connections, the GT-BassPro12 requires a +5V to +12V DC signal at the Remote (REM) connector to turn on.  Most head units with preamp outputs provide a remote turn-on wire that supplies this remote voltage signal. (As an alternative, you can connect the REM terminal to a switched ignition circuit.) Use at least #20 AWG (0.8128mm) wire for the remote turn-on connection.
Note: The remote turn-on connection is not needed when using the high-level input connections.
Schematics - Power, Pre-amp & Power Amp.
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