INTERCONNECTION
• Connect the RCA lineouts of the headunit with the RCA jacks LINE INPUT of the amplifier with appropriate high-value RCA cables.
If your headunit is equipped with a additional subwoofer lineout (SUB OUT), it is recommended to use this lineout.
• Connect the subwoofer with the speaker outputs (SPEAKER / -) by using appropriate wires.
• Ensure by any means, that the total impedance load of subwoofer is not lower than 1 ohms on GTX1250 and 2 ohms on GTX1000 and
GTX750 . Too low impedance cause high temperature and will shut down the amplifier operation.
• Always ensure the correct polarity of the speakers. The interchange of plus and minus cause total loss of bass playback and could
damage the speakers.
LEVEL INPUT CONTROLLER
• Turn the LEVEL INPUT controller of the amplifier to the 5V position.
• Turn the volume controller of the headunit to 80 - 90% of its full setting.
• Turn the LEVEL INPUT controller clockwise until you hear some distortion.
• Then turn back the LEVEL INPUT controller slightly until you hear a cleaner sound.
LOW PASS CONTROLLER
• The
LOW PASS controller
adjusts the cut-off point of the frequency range to above. The cut-off frequency is continuously
adjustable from 40Hz to 150 Hz.
SUB SONIC CONTROLLER
• The
SUB SONIC controller
(Subsonicfilter) limits the ultralow and not hearable frequencies of the audiosignal to below, to avoid a
mechanical and electrical overloading on the subwoofer. The cut-off frequency is adjustable from 15 to 55 Hz and depends on the size
of the subwoofer.
BASS BOOST CONTROLLER
• The
BASS BOOST
controller adjusts the bass enhancement between 0db and +12dB.
• A too high bass boost may cause clipping/distortion and damage on the loudspeakers and also may harm your hearing abilities.
Use this controller carefully!
BASS REMOTE
• The enclosed
BASS REMOTE
Controller adjusts the bass-level e.g. from the driver’s seat.
Please use only the enclosed bass remote controller and cable.
Connect the bass remote
controller and the
remote terminal on the amplifier
with the enclosed cable.
Connect stereo RCA output
(R/L or SUB OUT)
of the headunit with
LINE INPUT R/L of the amplifier
L
R
GTX1250:
Subwoofer 1 – 8 Ohms
GTX750 / GTX1000:
Subwoofer 2 – 8 Ohms
A additional subwoofer can be
connected to the non-occupied
speaker outputs. In this case
ensure a impedance of 4 - 8 ohms
on GTX750 / GTX1000 and on
GTX1250 2 - 8 ohms per
subwoofer.
NOTE!!
G T X 7 5 0 _ G T X 1 0 0 0 - G T X 1 2 5 0
1 6
INTERCONNECTION EXAMPLE Low-Pass Mode with 1 Subwoofer
