Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!

Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday, 29 March 2019

JBL GT-BASSPRO12 POWERED CAR SUBWOOFER - WIRING DIAGRAM - CIRCUIT DIAGRAM

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.