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AMPLIFIER FEATURE DESCRIPTIONS
SUPER SPORT AT-SERIES AMPLIFIERS:
! 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.
AT950 / 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