AMPLIFIER FEATURE DESCRIPTIONS
Each model is capable of 4 & 2-Ohms stereo per channel, or 4-Ohms mono bridged operation except the mono amps
which are capable of 4, 2 and 1-Ohm loads.
The input sensitivities for rated output powers are variable from 0.2V to 6V.
All crossovers are fully variable in their respective ranges.
Crossover filters are 12dB/Octave.
A
LED indicates the powered up and turned on condition.
All Autotek amplifiers feature a comprehensive diagnostic system, with speaker lead short circuit, and amplifier DC
faults indicated by the red “
LED.
POWER
PROTECT
”
CAUTION: DO NOT OPERATE ANY AMPLIFIER BELOW THE INTENDED IMPEDANCE. YOU WILL CAUSE
DAMAGE TO THE AMPLIFIER THAT WILL NOT BE COVERED UNDER THE WARRANTY PRINTED IN THE BACK
OF THE MANUAL. 2 & 4 Channel amps are capable of 4 and 2-Ohms wired stereo and 4-Ohms wired mono
bridged. Certain mono amps are capable of 4, 2 and 1-Ohm and others are only capable of 4 & 2-Ohms.
Be sure to check the specifications matrix for specific model impedance capabilities.
2
-The
signal is routed directly to the
RCAjacks, regardless of the
setting simplifying daisy chaining of amplifiers.
Allows you to adjust the crossover filter from 15Hz to 55Hz.
Allows yo to adjust the
crossover filter from 40Hz to 150Hz.
Adjusts the input sensitivity from 0.2 volts to 6 volts.
45Hz bass boost adjustable from 0db to 12dB.
This is the input jack for the remote Level control.
: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.
: The line output passes through signal from the line inputs which allows you to daisy chain multiple amplifiers from one signal.
LINE INPUT
LINE OUT
X-OVER
-SUBSONIC:
-LOWPASS:
LOW PASS
LEVEL:
BASSBOOST:
REMOTE CONTROL:
LINE INPUT
LINE OUTPUT
The ATA1200.1 is capable of 4 & 2-Ohm loads (not 1-Ohm). The ATA2000.1 is capable of 4, 2 & 1-Ohm loads.
Operating the amp below the capable impedance can cause damage to the amp not covered in the warranty.
ATA1200.1 / ATA2000.1 MONO BLOCK AMPLIFIERS
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
switch which allows you to select 2, 3 or 4 channel operation. Switch to 2 channel if you only have 1 set of RCA’s in CH 1/2 and
the unit will automatically supply signal to channels 3/4. Select 3 channel when you only have RCA’s in CH 1/2 but plan to run channels 3/4 bridged. Select 4 channel if you
are providing RCA’s to channels 1/2 and 3/4.
The
slide switch selects the internal crossover functions:
-The input signal is routed directly to the
RCAjacks, regardless of the
setting simplifying daisy chaining of amplifiers.
Selects the built in
filter, variable from 60 Hz to 1.2kHz.
Bypasses all crossovers for full frequency range operation.
Selects the built in
, variable from 30 Hz to 250Hz.
: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.
: The line output passes through signal from the line inputs which allows you to daisy chain multiple amplifiers from one signal.
Mode
X-OVER
LINE OUT
X-OVER
-HPF:
HIGH PASS
-FULL:
-LPF:
LOW PASS
LINE INPUT
LINE OUTPUT
-BASS EQ:
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.
Adjustable 45Hz bass boost from 0dB to 12dB.
ATA1000.4 / ATA1400.4 / ATA2000.4 FOUR-CHANNEL AMPLIFIERS
The
slide switch selects the internal crossover functions:
-The input signal is routed directly to the
RCAjacks, regardless of the
setting simplifying daisy chaining of amplifiers.
Selects the built in
filter, variable from 60 Hz to 1.2kHz.
Bypasses all crossovers for full frequency range operation.
Selects the built in
, variable from 30 Hz to 250Hz.
Adjustable 45Hz bass boost from 0dB to 12dB.
: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO for bridging operation
: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the HIGH level (wire) inputs.
: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.
: The line output passes through signal from the line inputs which allows you to daisy chain multiple amplifiers from one signal.
X-OVER
LINE OUT
X-OVER
-HPF:
HIGH PASS
-FULL:
-LPF:
LOW PASS
-BASS EQ:
MODE
HIGH INPUT
LINE INPUT
LINE OUTPUT
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.
ATA800.2 / ATA1200.2 / ATA2000.2 TWO-CHANNEL AMPLIFIERS
Summary of Contents for 2050.4
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