BLAUPUNKT EMA 1450 Power Amplifier Instruction Manual

POWER AMPLIFIER
EMA 1450 Enjoy it.

Operating and Installation Instructions

EMA 1450 Power Amplifier

CAUTIONS

Proper system planning s vital in order to maximize the device’s performance and road safety. Plan your installation ~ carefully to avoid compromising performance reliability of the system. Consult an authorized Blaupunkt dealer for  installation of reparation. 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 the vehicle component to avoid any damage during drilling.
• Ensure cross section of the cable is no less than 2.5mm? 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 overly exposed location such on therein 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 malfunction. Do not replace damaged fuse with higher current.

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 our products.
USA & CANADA: This product is not intended for sale in the United States and Canada. If purchased in the US. or Canada, this product is purchased on as-is basis. No warranty, whether expressed or implied s provided in the U.S. or Canada.

General Safety Notes
Observe the following to protect yourself against injuries :

• The supply voltage requirement is 12V DC with grounded negative connection. Unauthorised dismantling or modifying may void the warranty of the device. Blaupunkt is not liable for any loss or damaged caused or resulting from  unauthorized reparation or modification to the device. Refer to a Blaupunkt specialist in case of any installation or reparation 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 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.
• For abnormalities, please refer to TROUBLESHOOTING. Consult a specialist if the problem persist.
• Solvents, cleaning and scouring agents as well as dashboard spray and plastics care products may contain materials which can damage the surface and screen of the device. Use only dry or slightly moistened cloth to clean the device.

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 any notice. Visit www.blaupunkt.com for more info.

INPUT FUNCTION

1. PRO/PWR Indicator
2. HPF Control
3. Crossover (HPF/FULL/LPF)
4. CH3/ Cha Gain Control
5. RCAlnput Jack
6. RCAOutput Jack
7. CH1/CH2 Gain Control| 8. Bass Boost Control
9. LPF Control
10. REM Control
11. GND Control
12. +12V Control
13. Fuse
14. Speaker Output Connection
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SPECIFICATION

Power

• Voltage Supply: 11-15V
• Idling Current : 0.5A
• Fuse:40Ax 1
• Consumption @ 20, 14.4VDC : 12A (Max Musical Power)

Amplifier

• Amplifier Class: CLASS AB
• Channel: 4
• PCBLayer:1
• Max Output Power @ 4 ohms : 125W x 4
• RMS Power 4 ohms : 50W x 4
• RMS Power 2 ohms : 75W x 4
• RMS Power 4 ohms Bridge : 125W x 2
• Signal-To-Noise Ratio : 968
• Frequency Response: 20Hz- 22kHz
• Gain Adjust: 300mV- 6V
• Bass Boost Frequency : 45Hz
• Bass Boost Level: 0/6/12dB
• Total Harmonic Distortion: <0.1%
• Crossover Frequency: 50Hz – 200Hz (L); 80Hz – 3KHz (H)
• RCA Input: 4 Channel
• Dimension (W x Hex D): 300 x 209 x 52.5mm
• Net Weight : 1.77kg

WIRING DIAGRAM

TROUBLESHOOTING

If any of the following problem occur, please resort to Troubleshooting for the possible solutions. Consult Blaupunkt authorized dealer if problem persist.

and repair accordingly.
Fuse failed to work| Examine power integrity and reversed polarity, repair or replace fuse accordingly.
Disconnected power wires| Examine power wire and ground connections.
Replace and repair accordingly.
Missing output from source or audio input 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 radio system.
Replace or repair accordingly.
Thermal protection will be activated when amplifier temperature exceeds 90°C| Improve amplifier’s ventilation accordingly.
Poor audio input| Examine input connection.
Replace or repair accordingly.
Audio distortion| High amplifier sensitivity setting, exceed maximum output capability of amplifier| Refer to manual to reset gain setting.
Low impedance| Examine speaker impedance. Rewire speaker accordingly, if below 20 stereo or 40 mono.
Improper connection of speaker and amplifier| Examine speaker wire, replace or repair accordingly.
Broken speaker| Refer to manual for installation instruction.
Examine radio system.
Poor bass response| Wrong speaker wire polarity connection causing phase cancellation| Replace or repair accordingly.
Examine speaker polarity and repair accordingly.
Broken battery fuse| Low impedance| Examine speaker impedance. Rewire speaker accordingly, if below 20 stereo or 40 mono.
Incorrect power connection| Examine power wire and ground connections.
Repair accordingly.
Fuse used is smaller than recomb-mended| Replace with recommended fuse type.
Over drawn current| Examine speaker impedance. Rewire speaker and replace fuse accordingly, if below 20 stereo or 40 mono.
Incorrect power wire| Examine power wire and ground connections.
Repair accordingly.
Broken amplifier fuse| Over drawn current| Examine speaker impedance. Rewire speaker and replace fuse accordingly, if below 20 stereo or 40 mono.
Fuse used is smaller than recomb mended| Examine power wire and ground connections and repair accordingly with correct fuse.

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