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7

Quick Start

Here are a few general steps to get your ACM-4.300 amplifier up and 

running:

1.  Undo the +12V and Ground connections to the car battery 

before making any connections to the amplifier. 

2.  Pick a mounting location that will provide access to the controls 

and connections, provide plenty of good ventilation, and also 

protect the amplifier from heat, moisture, and dirt. 

3. The 

ACM-4.300 amplifier needs to be securely mounted using 

the four mounting holes located in each corner.

4. 

Before drilling any holes, take every precaution to prevent 

any damage to fuel lines, power and other electrical wir-

ing, hydraulic brake lines, and other systems, that might compro-

mise vehicle safety.

5.  When making connections, designate red RCA plugs as right, 

and designate white, black, or grey plugs as left. This is a good 

idea for consistency. 

6.  Use quality interconnect cables.

7.  Connect the +12V input terminal of the unit to the +12V termi-

nal of the vehicle battery, using 8 to 4 AWG.

8.  Connect the Ground terminal of the unit to the chassis of the 

vehicle, using the same wire gauge as the +12V power wire.

9.  Connect the remote power terminal of the unit to the remote 

turn-on switch of your source unit. Alternatively, you can skip 

this connection and use the GTO™ Signal sensing.

10.  Connect your audio inputs to the unit – either speaker-level or 

line-level RCA… not both.

11.  Connect your loudspeakers (minimum impedance of 2 Ohms 

stereo, or 4 Ohms bridged mono).

12.  When all connections are made, reconnect the vehicle battery.
13.  Adjust your gain settings to maximise your signal level.
14.  Set the ACM-4.300 crossovers to the frequency recommended 

by the loudspeaker manufacturer.

15.  Enjoy the drive!

Summary of Contents for ACM-4.300

Page 1: ...el Amplifier High Current Design 4x50 Watts 4 Ohms 4x75 Watts 2 Ohms 2x150 Watts 4 Ohms Bridged Mono 12 dB Octave Linkwitz Riley Alignment Crossover GTO Signal Sense Great Turn On 4 Line Level RCA Inp...

Page 2: ...r moisture does not operate normally or has been dropped 14 This apparatus shall not be exposed to dripping or splashing and no object filled with liquids shall be placed on the apparatus 15 Fuses sha...

Page 3: ...ACM 4 300 amplifier will turn on Alternatively you can use the GTO feature of the amplifier so it will turn on when an audio signal is detected at the speaker level or line level inputs 4 Power Input...

Page 4: ...Make sure that you follow the plus and minus polarity markings on the ACM 4 300 and match it to the polarity of your loudspeakers In Stereo operation connect one loudspeaker to each channel as shown T...

Page 5: ...d cell phone signals that trigger the source unit in the vehicle to come on To prevent these from turning your audio system on unexpectedly you can bypass the GTO circuit by moving the switch to the O...

Page 6: ...e control is for channels 1 and 2 and the other for 3 and 4 The setting procedure is given on the next page and involves nerves of steel a steady hand grit determination and the thought that you are m...

Page 7: ...right and designate white black or grey plugs as left This is a good idea for consistency 6 Use quality interconnect cables 7 Connect the 12V input terminal of the unit to the 12V termi nal of the ve...

Page 8: ...ected to the ACM 4 300 remote input terminal When the head unit is turned on it will turn on the ACM 4 300 amplifier Alternatively the GTO signal sense feature can be used to gently turn on the ACM 4...

Page 9: ...sing Speaker Level Inputs Factory Radio Speaker level outputs Speaker level outputs Subwoofer Speaker level output 80 Hz and above Speaker level output 80 Hz and below ACM 1 300 Mono Subwoofer Amplifi...

Page 10: ...Guide System 2 Using Line Level Inputs Factory Radio Line level outputs Speaker level outputs Subwoofer Front Speakers Rear Speakers Speaker level output 80 Hz and below ACM 1 300 Mono Subwoofer Ampli...

Page 11: ...ntrols from dust bunnies Removal Procedure 1 Locate the top four screws that hold the cover plate in place 2 Use a philips screwdriver to remove the four screws 3 Keep the cover plate and screws in a...

Page 12: ...80 Hz 120 Hz Bypass Speaker Level Inputs 2x 40V 400W max Line Level Inputs 2x balanced RCA 8V max Weight 2 15 lbs Dimensions 9 41 W X 2 97 D X 1 75 H 2018 AudioControl All rights reserved Warranty Fo...

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