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Quick Start Guide

Important Safety Instructions

1. 

Read these instructions.  

2. 

Keep these instructions.

3. 

Heed all warnings.

4. 

Follow all instructions.

5. 

Do not use this apparatus near water.

6. 

Clean only with a dry cloth.

7. 

Do not block any ventilation openings. Install in accordance with the 

manufacturer’s instructions.

8. 

Do not install near any heat sources such as mufflers, silencers, exhaust 

pipes, or other apparatus (including amplifiers) that produce heat.

9. 

WARNING: Improper installation may lead to permanent injury or death. 

Installation of the apparatus must be done with great care by qualified 

personnel, to prevent damage to fuel lines, power and other electrical 

wiring, hydraulic brake lines, and other systems, that might compromise 

vehicle safety.

10.  P12V and Ground wiring of sufficient size to ensure adequate 

current to the amplifier. For the 

ACM-4.300

 this means 8 gauge wire or 

thicker.

11.   Use rubber grommets to protect wiring whenever passing wires through 

metal openings or bulkheads.

12.  Only use attachments/accessories specified by the manufacturer.
13.  Refer all servicing to qualified service personnel. Servicing is required 

when the apparatus has been damaged in any way, such as the power in-

put terminals are damaged, liquid has been spilled or objects have fallen 

into the apparatus, the apparatus has been exposed to rain or 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 shall be replaced only with the correct type and fuse value, and 

only when the apparatus is powered off.

16.  Exposure to high sound pressure levels may lead to permanent hearing 

loss. Take every precaution to protect your hearing.

The lightning flash with arrowhead symbol within an equilateral 

triangle is intended to alert the user to the presence of uninsulated 

“dangerous voltage” within the product’s enclosure, that may be of 

sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to 

alert the user of the presence of important operating and mainte-

nance (servicing) instructions in the literature accompanying the 

appliance.

Caution: to reduce the risk of electric shock, do 

not disassemble the apparatus, other than to 

remove the top panel to access the controls. 

There are no user-serviceable parts inside. Refer 

servicing to qualified personnel.

Recycling notice: If the time comes and this apparatus has fulfilled 

its destiny, do not throw it out into the trash. It has to be carefully 

recycled for the good of mankind, by a facility specially equipped 

for the safe recycling of electronic apparatii. Please contact your 

local or state recycling leaders for assistance in locating a suitable 

nearby recycling facility. Or, contact us and we might be able to 

repair it for you.

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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