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1-Channel-Mode: 1 Subwoofer / Mono bridged
Cable Connections:
• Connect the AMPLIFIER INPUT SECTION of the amplifier to the head unit line output with good quality RCA
to RCA cables.
• Connect the speakers with the terminal block (SPEAKER BRIDGED -) of the amplifier.
• The minimum final speaker impedance must not be below 2 Ohm per channel. Too low speaker loads result
in too high heat dissipation and may cause the amplifier run into protection status.
• Please observe speaker channel and polarity as printead by the speaker terminal
block. Incorrect phasing of the speakers results in total loss of bass response.
•
FILTER - Switches & Controls
• In 1-Channel-Mode in Mono select the LP FILTER MODE to "LP", which eliminates the higher frequencies.
The recommended crossover frequency ranges between 60 - 100Hz, depending on the size and response of the Subwoofer.
The Lowpass adjustment can be done with the FREQ. FILTER LP control. In this operation-mode FREQ. FILTER HP is not used.
Set HP FILTER MODE to "OFF"
• If HP FILTER MODE is "ON" the FREQ. FILTER HP control works as a Subsonic-Filter (Bandpass). Together with the FREQ. FILTER LP you
can adjust the treshold frequency.
GAIN - Control
• Turn the GAIN control on the amplifier to "MIN." position.
• Turn the head unit volume control to about 80-90% of its full setting.
• Turn the GAIN control clockwise until you hear some distortion.
• Then turn back the GAIN control slightly until you can hear clean sound.
BASS-EQ - Control
• The BASS-EQ control increases the bass level from "0 - 18dB".
Caution!
Please use the Bass-Boost carefully.
BASS REMOTE - Control
• The included BASS REMOTE allows a increasing of Bass-Boost. Set on this BASS CONTROL Switch to "EXTERNAL".
BASS LEVEL
MAX.
MIN.
BASS REMOTE CONTROL
+ +
SUBWOOFER
4 OHM min.
2-Channel Amplifiers - Speaker & RCA-Connection
QE 450.2 / QE 900.2
Caution
Please avoid to connect speaker (-) to the ground or vehicle chassis.
