Ground Zero GZHA 1.1850DXII, Owner'S Manual

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Specifications
Model GZHA 1.1850DXII
Type
1 channel class D
RMS Power @ 4
Ω
CEA Standard CEA-2006-A
1 x 700 W
(1% THD+N)
RMS Power @ 2
Ω
CEA Standard CEA-2006-A
1 x 1200 W
(1% THD+N)
RMS Power @ 1
Ω
CEA Standard CEA-2006-A
1 x 1850 W
(1% THD+N)
1 x 2400 W
(10% THD+N)
RMS Power @ 2
Ω
Linkmode
CEA Standard CEA-2006-A
1 x 3700 W
(1% THD+N)
1 x 4800 W
(10% THD+N)
Damping factor
> 200
Low pass
30 Hz – 250 Hz (24 dB / Oct)
Subsonic filter
5 Hz – 50 Hz (24 dB / Oct)
Bass boost
0 ~ +9 dB (30 – 80 Hz)
Phase shift
0 – 180° (variable)
Frequency response
5 Hz – 250 Hz (± 1 dB)
Input sensitivity
200 mV – 9 V (± 5%)
Bass remote control

Fuse
4 x 40A
Dimensions
W x H x L mm
293 x 67 x 400
Dimensions
W x H x L inch
11.54“ x 2.64“ x 15.75“
Trouble shooting guide
Symptoms Check Points Cure
No sound
Is the POWER LED illuminated?
Check fuses in amplifier.
Be sure remote lead is connected.
Check +12 Volt connection
Check ground connection
Is the diagnostic LED illuminated? Check for speaker short or amplifier overheating
Amp not switching on
No power to the amplifier Check power wire or connections
No power to remote wire with receiver on Check connections to radio
No sound in one channel
Check speaker leads Inspect for short circuit or an open connection
Check audio leads
Reverse left and right RCA inputs to determine if it
is occurring before the amp
Amp turning off at medium /
high volume
Check speaker load impedance
Be sure proper speaker load impedance
recommendations are observed
(If you use an ohm meter to check speaker
resistance, please remember that DC resistance
and AC impedance may not be the same.)
Protection LED is on
Temperature shut down Turn radio volume down
Speaker wires short Separate speaker wires and insulate