Specifications

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 crossoverfilter 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 mono amps are 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 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 2 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 slideswitch selects the internal crossover functions:
-The input signal is routed directly to the RCAjacks, regardless of the settingsimplifying 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 PASSsignal 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.
MM1150.5/MM1550.4/MM2050.4FOUR-CHANNEL AMPLIFIERS
The slideswitch selects the internal crossover functions:
-The input signal is routed directly to the RCAjacks, regardless of the settingsimplifying 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 PASSsignal 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.
MM1150.2/MM1650.2TWO-CHANNEL AMPLIFIERS