Blaupunkt GTr 135 A Active Subwoofer
Operating and Installation Instructions
CAUTIONS
Proper system planning is vital to maximize the device's performance and road safety. Plan your installation carefully to avoid compromising the system's performance and reliability. Consult an authorized Blaupunkt dealer for installation or preparation. Read the manual carefully before operating the device for the first time.
Safety Notes
Ensure to follow below safety notes during installation and wiring connection:
- Disconnect the negative terminal of the battery. Refer to the safety notes of the vehicle manufacturer.
- Ensure positions of the holes are nowhere near vehicle components to avoid any damage during drilling.
- Ensure the cross-section of the cable is no less than 2.5mm² if the positive and negative cables are too long.
- Incorrect installation may result in malfunction of the device or the car sound system.
Installation and Connection Instructions
- Select a dry and well-ventilated location to install the device.
- The device must not be installed in an overly exposed location such as the rear shelf or rear seat.
- The installation location must be suitable for screw holes and have stable ground support.
Integrated Fuse
The integrated fuse in the device protects the output voltage and the entire electrical system in case of malfunction. Do not replace a damaged fuse with one of a higher current rating.
Switching On/Off
This device will automatically turn on if an audio signal is detected. The device will also automatically turn off if no audio signal is received.
Disclaimer
In no event shall Blaupunkt be liable for any direct, indirect, punitive, incidental, special consequential damages to property or life and whatsoever arising out of or connected with the use or misuse of its products.
USA & CANADA: This product is not intended for sale in the United States and Canada. If purchased in the U.S. or Canada, this product is purchased on an as-is basis. No warranty, whether expressed or implied, is provided in the U.S. or Canada.
Remote Control
The remote control has the following functions:
- GAIN (1)
- BASS BOOST (2)
- LPF (3)
- PHASE (4)
Remote Control Operation:
- Set the GAIN to 200mV (Min), PHASE to NORM., and LOW PASS FILTER to Center before turning on the device.
- Set the Bass/Treble of the head unit to zero. Set the volume to a lower level.
- Gradually increase GAIN until the desired sound effect is achieved or until the sound distribution in the vehicle is even.
- Avoid setting the volume of the head unit and GAIN too high to prevent sound distortion. Ensure speakers are functioning well to avoid sound distortion too. Then adjust the LOW PASS FILTER (L.P.F.) to the desired frequency.
- Changing the LPF will change the sound output of the subwoofer. Continue to adjust GAIN, LPF, and volume until the desired setting is found.
- Play music from the head unit while sitting in the driver's seat and switch between NORM and REV to select the desired sound output setting. The ideal PHASE is subjective and varies from one vehicle to another, depending on the location of the device and the acoustic characteristics of the vehicle interior.
Disposal Notes
Do not dispose of your old unit in the household trash! Use the return and collection systems available to dispose of the old device.
This manual may be updated from time to time without any notice. Visit www.blaupunkt.com for more info.
FUNCTIONS CONTROLLING DIAGRAM
The diagram shows the functions controlling the device:
- 1. Power / Speaker Input
- 2. Remote Control Input
INSTALLATION
The diagram illustrates the installation process, including the placement of the device and the use of the Cable Holder Bar.
SPECIFICATION
Subwoofer
- Speaker Size: 214.5mm x 135.0mm
- Cone Composition: Aluminium
- Magnet Type: Ferrite
- Wired Remote: Included
- Enclosure Housing Material: Plastic & Aluminium
- Enclosure Dimension (LxWxH): 280 x 200 x 72mm
- Enclosure Net Weight: 3.62kg
Amplifier
- Amplifier Technology: Class AB
- Normal Output Power (RMS): 130W
- Max. Output Power: 300W
- Sensitivity (In Car/1W): 92dB
- Signal / Noise Ratio (dB): 91dB
- Impedance: 4 ohms
- Frequency Response: 40Hz – 150Hz
- Low Pass Filter (LPF): 50Hz – 100Hz
- Voltage: 14.4V (10V – 16V)
- Phase Switch: 0 deg / 180 deg
- Automatic On/Off (Hi & Lo): High Level Only
- Fuse Rating: 10A
- Gain: 200mV - 6V
- Audio in Sensitivity: Speaker Input (0.8V)/ RCA Input (82mV) Subwoofer
Accessories
The following accessories are included:
- 2x Screws (M3x6)
- 2x Screws (M6x8)
- 2x Screws (M4x20)
- 1x Cable Holder Bar
- 2x Mounting Brackets (71 x 39.5 x 7mm)
- 1x 4.5m Remote Controller
- 1x 4.5m DC Cord
- High level Input Speaker Extension
- Low level Input Speaker Extension
- Input Plug Extension
WIRING DIAGRAM
Use the supplied cable and wire harness to connect the outputs correctly by referring to Diagram 1 & Diagram 2.
Diagram 1 (High Level Input - Speaker Input)
This diagram illustrates the wiring for a high-level input connection using speaker wires. It shows connections for:
- REMOTE CONTROL
- 10A FUSE
- +12V BATTERY
- CHASSIS GROUND
- YELLOW WIRE
- BLUE/WHITE WIRE (AUDIO DEVICE CONTROL WIRE)
- GREY/BLACK (-) & GREY WIRE (+) (SPEAKER RIGHT CHANNEL OUTPUT WIRE)
- WHITE/BLACK (-) & WHITE WIRE (+)
- RCA SIGNAL WIRE (NOT IN USE IN THIS TYPE OF INSTALLATION)
- AUDIO DEVICE
Diagram 2 (Low Level Input - RCA Input)
This diagram illustrates the wiring for a low-level input connection using RCA cables. It shows connections for:
- REMOTE CONTROL
- 10A FUSE
- +12V BATTERY
- CHASSIS GROUND
- YELLOW WIRE
- BLUE/WHITE WIRE (AUDIO DEVICE CONTROL WIRE)
- GREY/BLACK (-), GREY WIRE (+), WHITE/BLACK (-) & WHITE WIRE (+) (These wires are not used for RCA input)
- RCA SIGNAL WIRE
- AUDIO DEVICE
TROUBLESHOOTING
If any of the following problems occur, please refer to the troubleshooting solutions. Consult a Blaupunkt authorized dealer if the problem persists.
| Problem | Solution |
|---|---|
| Amplifier power up failure | Examine if the ground connection is intact. Examine if remote input has at least 5V DC. Examine if battery power is connected correctly to the + terminal. Ensure supplied voltage is minimum 12V. Examine if fuse is broken and replace if necessary. Restart the device if the protection LED light is on. |
| Protection LED lights on when turn on | Examine if speaker wire had short-circuit. Turn volume down from the head unit to prevent overdriving the device. The device might need service or repair if the protection LED light is still on after resetting the device. |
| No sound output | Examine fuses and replace if necessary. Examine if ground connection is intact. Examine if remote input has at least 5V DC. Examine if RCA audio cables are connected to the right inputs. Examine if speaker wiring is intact. |
| Low sound output | Reset Level Control. Examine the Crossover Control setting. |
| Buzzing noise | Observe if the device is still producing noise after turning on and off the amplifier. If yes, examine if the cables are correctly connected and if the cables and radio are in good condition. Repair or replace if the cables or the radio are not in good condition. |
| Squealing noise interference | Ensure RCA connections are properly connected. |
| Distorted sound output | Ensure input level of the device matches the signal level of the head unit. Always set the input level to the lowest. Examine if crossover frequency is set correctly. Examine if speaker wire had short-circuit. |
| Amplifier temperature increased | Examine if the minimum speaker impedance for the amp models is correct. Ensure good air ventilation around the device. Add an external cooling fan if necessary. |
| Engine noise (static sound) interference | Usually caused by poor RCA cable quality, which releases noise. Use only the best quality cables, and route them away from power cables. |
| Engine noise (alternator whine) interference | Examine if RCA cable are nowhere near or attached to the vehicle chassis. Examine if the head unit is properly connected to the wires. |
Designed and engineered by Blaupunkt Competence Centre.
