Below is a basic trouble-shooting guide to assist in seeking out and correcting a problem that may occur in the installation
process. Although lengthy, this chart cannot address every single problem possible but mainly the ones most common.
PARAMETER/FEATURE VALUE
Channels 4/2 active channels
Size ( W x H x D) 8.69 x 2.19 x 15.75 inches (220 x 56 x 400mm)
Weight 8.6 lbs (3.9 kg)
Crimping style speaker terminals? YES
Maximum terminal wire size 8 ga.
Subsonic filter YES (10Hz)
Separate front/rear or left/right gains? YES (sep. front/rear in 4ch/sep. left/right in 2 ch.)
Spade type auto fuses? YES
Speaker short, short to +12V, and short to ground protection? YES
High, low, and reverse voltage protection? YES
Power output transistors High current, bipolar outputs
Switching power supply transistors High-Speed, MOSFET’s
Minimum speaker impedance 2 ohms (non-bridged mode only)
4 ohms ONLY in bridge mode
PERFORMANCE DATA VALUE
Rated power output @ 0.1% THD
2 channels into 4 ohms / 2 ohms 4 x 55 W / 4 x 100 W
1 channel into 4 ohms 2 x 150 W
Total Harmonic Distortion @ rated full output 0.06% THD
Rated Signal/Noise ratio (averaged value) > 90 dBA
Measured @ full rated power 102
Measured @ 1 watt / 1 kHz 87
Damping factor >100
Frequency response (full-range mode) 20 - 50,000 Hz
High-pass crossover frequency limits 50 - 500 Hz (continuously variable control)
Low-pass crossover frequency limits 50 - 250 Hz (continuously variable control)
Input impedance 20 kOhms
Input signal voltage control range 0.3 - 4.0 Vrms
Current draw for undistorted output @ 14.4 VDC
@ full undistorted output, non-bridged 32.5 A (4 ch x 55 W x 4 ohms)
@ full undistorted output, bridged mode 48.0 A (2 ch x 150 W x 4 ohms)
@ 33% of undistorted power (full “music” power) 18.0 A (4 ch x 18 W x 4 ohms)
@ idle 1.0 A
Minimum battery voltage to maintain rated power 12.6 Volts DC
Usable battery voltage 10 - 18 Volts DC
Trigger line voltage range 10 - 18 Volts DC
Trigger line current draw < 15 mA draw
Turn on delay time @ 1.5 seconds
Thermal shutoff temperature (averaged heat-sink exterior temperature) 170°F (80° C)
NOTE: DUE TO ONGOING PRODUCT IMPROVEMENTS, DESIGN AND SPECIFICATIONS ARE SUBJECT TO CHANGE
WITHOUT ADVANCED NOTICE TO THE CONSUMER OR RETAILER.
BLAUPUNKT SPECIFICATIONS - MPA680US, 3/2 CHANNEL AMPLIFIER
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