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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

POWER

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 “

PROTECT”

LED.

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.

ATA800.2 / ATA1200.2 / ATA2000.2 TWO-CHANNEL AMPLIFIERS

The

X-OVER

slide switch selects the internal crossover functions:

-The input signal is routed directly to the

LINE OUT

RCAjacks, 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.

-BASS EQ:

Adjustable 45Hz bass boost from 0dB to 12dB.

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 6V.

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.

ATA1000.4 / ATA1400.4 / ATA2000.4 FOUR-CHANNEL 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

Mode

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

X-OVER

slide switch selects the internal crossover functions:

-The input signal is routed directly to the

LINE OUT

RCAjacks, 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.

-BASS EQ:

Adjustable 45Hz bass boost from 0dB to 12dB.

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.

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.

ATA1200.1 / ATA2000.1 MONO BLOCK AMPLIFIERS

-The

LINE INPUT

signal is routed directly to the

LINE OUT

RCAjacks, regardless of the

X-OVER

setting simplifying daisy chaining of amplifiers.

-SUBSONIC:

Allows you to adjust the crossover filter from 15Hz to 55Hz.

-LOWPASS:

LEVEL:

Allows yo to adjust the

LOW PASS

crossover filter from 40Hz to 150Hz.

Adjusts the input sensitivity from 0.2 volts to 6 volts.

BASSBOOST:

45Hz bass boost adjustable from 0db to 12dB.

REMOTE CONTROL:

This is the input jack for the remote Level control.

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 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.