Ground Zero RADIOACTIVE Series - Specifications; Trouble shooting guide

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Specifications
Model
GZRA 1.1650DX
Type
1 Channel Class D
RMS Power @ 4 Ω
CEA Standard CEA-2006-A
1 x 650 W
(1% THD+N)
1 x 800 W (10% THD+N)
RMS Power @ 2 Ω
CEA Standard CEA-2006-A
1 x 1250 W (1% THD+N)
1 x 1400 W (10% THD+N)
RMS Power @ 1
Ω
CEA Standard CEA-2006-A
1 x 1800 W (1% THD+N)
1 x 2300 W (10% THD+N)
RMS Power @ 2Ω Linkmode
CEA Standard CEA-2006-A
1 x 3600 W
(1% THD+N)
1 x 4600 W (10% THD+N)
Damping factor
> 100
Signal to noise Ratio
> 75 dB
Lowpass
30 Hz – 250 Hz
Subsonic filter
10 Hz – 50 Hz
Bass boost
0 ~ +12 dB (45 Hz)
Frequency response
10 Hz – 250 Hz (± 1 dB)
Input sensitivity
200 mV – 9 V (± 5%)
Bass remote control

Fuse
4 x 35A
Dimensions
W x H x L mm
230 x 53 x 446
Dimensions
W x H x L inch
9.04“ x 2.09“ x 17.56“
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