BLAUPUNKT MPA 14120 H Power Amplifier
Safety Instructions
- Disconnect the negative terminal of the battery. Refer to the safety notes of the vehicle manufacturer.
- Ensure the positions of the holes are nowhere near the vehicle component to avoid any damage during drilling.
- Ensure cross 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 the malfunction of the device or the car’s sound system.
- The supply voltage requirement is 12V DC with a grounded negative connection.
- Unauthorised dismantling or modification may void the warranty of the device.
- Blaupunkt is not liable for any loss or damage caused or resulting from unauthorized BLAUPUNKT MPA 14120 H Power Amplifier reparation or modification to the device.
- Refer to a Blaupunkt specialist in case of any installation or repair required.
- The device’s core components may be damaged when the car is driven on bumpy roads for a prolonged period of time or if it is used to play non-standard volume level.
- Please do not operate the car radio under BLAUPUNKT MPA 14120 H Power Amplifier in extreme temperature conditions (extremely high temperature or extremely low temperature).
- Ensure the temperature within the car ranges from -10°C to 85°C (Storage temperature: 5°C to 35°C) before connecting to the power supply.
- Solvents, cleaning and scouring agents, as well as dashboard spray and plastics care products, may contain materials that can damage the surface and screen of the device.
- Use only a dry or slightly moistened cloth to clean the device.
Features
- Class AB Amplifier
- Max. Output Power: 1,000W
- Frequency Response: 10Hz – 40kHz
- Dimension (W x H x D): 205 x 409 x 58mm
- Net Weight: 4.1kg
Power
- Voltage Supply: 10-14.4V
- Idling Current: 0.5A
- Fuse: 40A x 2
Accessories
Installation
Wiring Diagram
Stereo Mode 
Speaker Connections 
Bridged Mode 
Power Connection Leads
Operating and Installation Instructions
- Proper system planning is vital in order to maximize the device’s performance and road safety. Plan your installation carefully to avoid compromising the performance and reliability of the system.
- Consult an authorized Blaupunkt dealer for installation or repair. Read the manual carefully before operating the device for the first time.
Installation and Connection
- 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, rear seat, etc.
- 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 a malfunction. Do not replace a damaged fuse with a higher current.
Input Function
- CH1 / CH2 RCA Input
- CH1 / CH2 Gain Control
- CH1 / CH2 Speaker Output
- Power / Protect Indicator
- GND Control
- REM Control
- +12V Control
- FUSE
- CH3 / CH4 Speaker Output
- CH3 / CH4 Gain Control
- CH3 / CH4 RCA Input
Dimensions
Specification
- Channel: 4
- PCB Layer: 2
- Max Output Power @ 4 ohms: 250W x 4
- RMS Power 4 ohms: 130W x 4
- RMS Power 2 ohms: 180W x 4
- RMS Power 4 ohms Bridge: 50W x 2
- Signal-To-Noise Ratio: >105dB
- Gain Adjust: 30mV – 8V
- Total Harmonic Distortion: 01%
- Damping Factor : >88
Troubleshooting
| Problem | Possible Causes | Solution |
| No audio output | The remote wire failed to work | Examine the voltage output/connection and repair accordingly. |
| The fuse failed to work. | Examine power integrity and reversed polarity, and repair or replace the fuse accordingly. | |
| Disconnected power wires | Examine power wire and ground connections. | |
| Replace and repair accordingly. | ||
| Missing output from the source, or the audio input is not connected | Examine input connection and signal integrity. | |
| Replace or repair accordingly. | ||
| Unstable audio cycle | Disconnected speaker wires | Examine speaker wires. |
| Replace or repair accordingly. | ||
| Broken speaker | Examine the radio system. | |
| Replace or repair accordingly. | ||
| Thermal protection will be activated when the amplifier temperature exceeds 90°C | Improve the amplifier’s ventilation accordingly. | |
| Poor audio input | Examine the input connection. | |
| Replace or repair accordingly. | ||
| Audio distortion | High amplifier sensitivity setting, exceeding the maximum output capability of the amplifier | Refer to the manual to reset the gain setting. |
| Low impedance | Examine speaker impedance. Rewire the speaker accordingly, if below 2Ω stereo or 4Ω mono. | |
| Improper connection of the speaker and amplifier | Examine the speaker wire; replace or repair it accordingly. | |
| Broken speaker | Refer to the manual for installation instructions. | |
| Examine the radio system. | ||
| Poor bass response | The wrong speaker wire polarity connection is causing phase cancellation | Replace or repair accordingly. |
| Examine speaker polarity and repair accordingly. | ||
| Broken amplifier fuse | Overdrawn current | Examine speaker impedance. Rewire the speaker and replace the fuse accordingly, if below 2Ω stereo or 4Ω mono. |
| The fuse used is smaller than recommended. | Examine the power wire and ground connections and repair accordingly with the correct fuse. | |
Disclaimer
- In no event shall Blaupunkt be liable for any direct, indirect, punitive, incidental, special, consequential damages to property or life, or whatsoever arising out of or connected with the use or misuse of our products.
- 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.
Recycling and Disposal
- 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 notice.
Customer Service
- Competence Center
- 2N-Everpol Sp. z o.o. Ul. Puławska 403A 02-801 Warsaw, Poland
- Call: +48 22 688 08 00
- E-mail: info@everpol.pl
- Visit: www.blaupunkt.com
- In case of questions or problems
- Tel: 00 48 22 688 08 33
- E-mail: sda@blaupunkt.pl
FAQs
Q: What type of amplifier is the MPA 14120 H?
Ans: High-power, multi-channel Class A/B amplifiers like the BLAUPUNKT MPA 14120 H are mainly used in automobile audio systems. It improves speaker and subwoofer performance by producing clear, strong sound.
Q: Can I bridge the channels?
Ans: Indeed. Two channels can be bridged using the MPA 14120 H to boost power output to a single speaker, usually a subwoofer. For safe bridging, always consult the manual’s wiring diagram.
Q: What speaker types can I connect to the MPA 14120 H?
Ans: Numerous automobile speakers and subwoofers that fit the amplifier’s impedance ratings—typically 2–4 Ohms—can be connected. Make sure the overall load doesn’t drop below the impedance threshold.
Q: Is the amplifier protected against overheating?
Ans: Indeed. The MPA 14120 H has integrated short-circuit, overload, and temperature protection. To avoid harm, the amplifier will momentarily shut off if it overheats.
Q: Can I install this amp myself?
Ans: Yes, provided you are at ease with wiring for automobile audio.
Q: What fuse rating does this amplifier require?
Ans: Usually, a fuse between 30A and 40A is needed, but to be sure, check the user handbook or the specific model label.
Q: Can this amplifier power a subwoofer?
Ans: Indeed. Depending on your setup, it can power a subwoofer by devoting two channels or by using a bridged channel pair.
Q: Does the MPA 14120 H support RCA inputs?
Ans: Indeed. The amplifier can be connected to aftermarket head systems via its RCA line-level inputs. For factory systems, a line output converter could be required.