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AMPLIFIER FEATURE DESCRIPTIONS
SUPER SPORT AT-SERIES AMPLIFIERS:
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Each model is capable of 4 & 2-Ohms stereo per channel, or 4-Ohms mono bridged All Autotek amplifiers feature a comprehensive diagnostic system, with speaker lead
short circuit, and amplifier DC faults indicated by the red “PROTECT” LED.
operation except the mono amps which are capable of 4, 2 and 1-Ohm loads.
CAUTION: DO NOT OPERATE ANY AMPLIFIER BELOW THE INTENDED
Tri-Mode operation with any stereo pair of amplifier channels is possible, as with all
IMPEDANCE.. YOU WILL CAUSE DAMAGE TO THE AMPLIFIER THAT WILL NOT BE
bridgeable amplifiers.
The input sensitivities for rated output powers are variable from 0.2 volt to 5 volt.
COVERED UNDER THE WARRANTY PRINTED IN THE BACK OF THE MANUAL. 2 &
All crossovers are fully variable in their respective ranges.
4 Channel amps are capable of 4 and 2-Ohms wired stereo and 4-Ohms wired
Crossover filters are 12dB/Octave.
mono bridged. The mono amps are capable of 4, 2 and 1-Ohm.
A POWER LED indicates the powered up and turned on condition.
Note that the LOW PASS signal is MONO.
-In the LPF position, the HIGH PASS filter acts as a subsonic filter.
-When the LPF mode is selected, a 0 to +12dB, at 45Hz, BASS -EQ
is also switched in.
AT1000 / AT1500 2-CHANNEL AMPLIFIERS
The X-OVER slide switch selects the internal crossover functions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER
setting simplifying daisy chaining of amplifiers.
-HPF: Selects the built in HIGH PASS filter, variable from 60 Hz to 1.2kHz.
-FULL: Bypasses all crossovers for full frequency range operation.
-LPF: Selects the built in LOW PASS , variable from 30 Hz to 250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or
MONO for bridging operation
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can
use the HIGH level (wire) inputs.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 5V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows
you to daisy chain multiple amplifiers from one signal.
LINE OUT LINE INPUT
R R
L L
+ - gnd - +
HI INPUT
5V 0.2V 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
LEVEL BASS EQ HPF LPF
FULL LPF HPF MONO STEREO
X-OVER MODE
The 4 channel amps have the same features as the 2 channel models accept that there are
2 sets of controls.
1 set for channels 1 & 2 and 1 set for channels 3 & 4.
In addition, the 4 channel models have a Mode switch which allows you to select 2, 3 or 4
channel operation.
The X-OVER slide switch selects the internal crossover functions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER
setting simplifying daisy chaining of amplifiers.
-HPF: Selects the built in HIGH PASS filter, variable from 60 Hz to 1.2kHz.
-FULL: Bypasses all crossovers for full frequency range operation.
-LPF: Selects the built in LOW PASS , variable from 30 Hz to 250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or
MONO for bridging operation
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can
use the HIGH level (wire) inputs.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 5V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows
you to daisy chain multiple amplifiers from one signal.
Note that the LOW PASS signal is MONO.
-In the LPF position, the HIGH PASS filter acts as a subsonic filter.
-When the LPF mode is selected, a 0 to +12dB, at 45Hz, BASS -EQ
is also switched in.
AT1200 4-CHANNEL AMPLIFIER
-The LINE INPUT signal is routed directly to the LINE OUT RCA jacks, regardless of the X-
OVER setting simplifying daisy chaining of amplifiers.
-SUBSONIC: Allows you to adjust the crossover filter from 15Hz to 55Hz.
-LPF: Allows yo to adjust the LOW PASS crossover filter from 40Hz to 150Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or
MONO for bridging operation
LEVEL: Adjusts the input sensitivity from 0.2 volts to 6 volts.
BASS EQ: The Bass EQ is adjustable from 0db to 12dB.
REMOTE: This is the input jack for the under-dash bass remote module.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you
to daisy chain multiple amplifiers from one signal.
The mono amps are capable of 4, 2 & 1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to the amp not
covered in the warranty.
AT2000.1 / AT3000.1 1-CHANNEL MONO AMPLIFIERS
OUTPUT INPUT
L
R
L
R
6V 0.2V
LEVEL
0dB 12dB
BASS EQ
15Hz
55Hz
SONIC
SUB
40Hz 150Hz
LPF
REMOTE
CONTROL
POWER
PROTECT
4CH MONO MIX
INPUT
CH1
CH1
CH3
CH3
CH4
CH4
CH2
CH2
INPUTOUTPUT
CHANNEL 1 / 2
CHANNEL 3 / 4
+ - GND - + + - GND - +
FULL
FULL
LPF
LPF
HPF
HPF
X-OVER
X-OVER
30Hz 250Hz
30Hz 250Hz
60Hz 1.2KHz
60Hz 1.2KHz
0dB 12dB 0dB 12dB5V 0.2v
5V 0.2v
LPF
LPF
HPF
HPF
BASS EQ BASS EQ
LEVEL
LEVEL
2 3 4
MODE