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GPA1000.1 / GPA1500.1 / GPA2000.1 GPA3000.1 1 CHANNEL APPLICATION
Basic application
These sub bass amplifiers can be used in any of the bi-amplification systems described in
this manual, replacing the 2 channel amplifiers as per the illustrations.
Interconnect cable checklist:
Connect the inputs to a suitable source, e.g. a head unit with good quality RCA cables.
Connect the LINE OUT to the inputs of the system highs amplifier.
Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,
simplifying the hookup of multiple speakers
Crossover frequency control checklist:
DESIGNATED
MONO OUTPUT
FROM HEAD UNIT
PARALLEL MONO
SUBWOOFERS
2-OHMS EACH MINIMUM
6
LOW PASS: 40Hz to 150Hz
SUBSONIC:15 Hz to 55 Hz
BASS EQ: 0 to +9dB
Level control checklist:
Refer to the section
Minimum final loudspeaker impedance: The GPA1000.1 & GPA1500.1 are 4 & 2-
Ohm stable only (not 1-Ohm stable).
The GPA200.1 & GPA3000.1 are 4, 2 & 1-Ohm stable.
FULL RANGE
STEREO LINE INPUT
Note: You can use the Radio/CD designated mono line output or a full range stereo line output.
For full range stereo line output, you will need an optional "Y-Adaptor" as shown.
"Setting up systems after installation for best performance"
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
Y-ADAPTOR
NOT USED
MONO
SUBWOOFER
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