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Speakers (Right) 2 - 8 Ohms
Speakers (Left) 2 - 8 Ohms
Connect RCA cable from
head-unit with RCA input
(LINE LEVEL INPUT).
L R
2 Channel Amplifier - Applications
GTS280/GTS2175
One 2 Channel Amplifier in Stereo Mode
Interconnect cable checklist:
• Connect the LINE LEVEL INPUT of the amplifier to the head unit line output with good quality RCA
to RCA cables.
• Connect the speakers with the terminal block (SPEAKERS/ + L - and + R -) 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.
Caution
Be careful not to connect speaker (-) to the ground or vehicle chassis.
FILTER SELECT
If larger than 20 cm speakers are used, the FLAT position is recommended.
For all smaller speakers (Ø8.7cm - Ø16cm) the Highpass-Position (HIGH PASS) 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 HIGH PASS control.
• In this configuration example the LOW PASS control is not used.
INPUT LEVEL
• Turn the INPUT LEVEL control on the amplifier to 4V position.
• Turn the head unit volume control to about 80-90% of its full setting.
• Turn the INPUT LEVEL control clockwise until you hear some distortion.
• Then turn back the INPUT LEVEL control slightly until you can hear clean sound.
BASS BOOST
• Turn the BASS BOOST control into “0dB” - position.
L RL R
Green: Left Speaker -
White: Left Speaker +
Black: Ground
Brown: Right Speaker +
Gray: Right Speaker -
HI INPUT
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