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4-Channel-Mode: 2 Frontspeakers / Stereo & 2 Rearspeakers / Stereo
Cable Connections:
• Connect the head unit line outputs with good quality RCA cables with the INPUT TERMINAL of
CH1/2 & CH3/4 of the amplifier.
• Connect the Speakers with the terminal blocks (– CH1 +, + CH2 -, – CH3 +, and – CH4 +) 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.
• Please observe speaker channel and polarity as printed by the speaker terminal block. Incorrect
phasing of the speakers results in total loss of bass response.
4-Channel Amplifiers - Speaker & RCA-Connection
Q 300.4
FILTER - Switches & Controls CH1/2 & CH3/4
•
If larger than 20 cm speakers are used, the FILTER "OFF" position is recommended.
For all smaller speakers (8.7cm - 16cm) the Position FILTER "HP" is recommended, which eliminates the lowest frequencies
and protects the speakers from damage. Set the crossover-frequency between 60Hz - 150Hz, depending of the size of the installed speakers.
The Highpass adjustment can be done with the XOVER control.
GAIN - Control (CH1/2 & CH3/4)
• Turn the GAIN controls on the amplifier to "MIN." position.
• Turn the head unit volume control to about 80-90% of its full setting.
• Turn the GAIN controls clockwise until you hear some distortion.
• Then turn back the GAin controls slightly until you can hear clean sound.
BASS-EQ - Control (CH1/2 & CH3/4)
• Turn the BASS-EQ control into center-position.
Caution
Please avoid to connect speaker (-) to the ground or vehicle chassis.
4 OHMS
4 OHMS
4 OHMS
4 OHMS
