Features • • High Current Design • 1x175 Watts @ 4 Ohm, 1x300 Watts @ 2 Ohm • 12 dB/Octave Linkwitz-Riley Alignment Crossover • GTO™ Signal Sense • PFM Subsonic Filter • 2 Line-Level RCA Inputs, summed • 2 Active Speaker-Level Inputs, summed • Optional wired ACR-1 Remote Control for Output Level • AccuBASS® Bass Restoration • Filled with home-grown audio goodness COMPACT HIGH POWER MONO SUBWOOFER AMPLIFIER Quick Start Guide
Important Safety Instructions 1. 2. 3. 4. 5. 6. 7. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8. 9. WARNING: Improper installation may lead to permanent injury or death.
Connection Panel Features 1 2 3 4 5 1. Fuse 30A – Replace the fuse only with the exact same style and Ampere rating. Disconnect 12V power before changing or inspecting the fuse. 2. Power Input Terminal +12V – This screw terminal connects to the +12V battery binding post of the vehicle. Use quality insulated wiring of the recommended wire gauge, such as wire gauge 8 or thicker. Thinner wire may cause an overheating hazard due to the large currents involved. 3.
6. RCA Analog Line-Level Inputs – The line-level output from the head unit or factory installed radios can connect here, so the ACM-1.300 will receive the line-level audio signals. The left and right signals are summed internally to produce a mono subwoofer signal. Do not use the speaker-level inputs if you are using the RCA line-level inputs. 7. Remote Control Connector – This connects to the optional ACR-1 remote control and allows you to remotely control the output level. 8.
Control Panel Features 8 9 10 8. Power LED – If you have connected your battery power, vehicle ground, and turn-on lead (or GTO™ signal sensing) correctly, then this light should turn on to indicate the power is ON. 9. Protection LED – The ACM-1.300 detect a problem. If the protection LED should come on, read the gating. (See the specs page for a list of diagnostic codes.) 10. GTO™ Signal Sense – In the ON position, the ACM-1.
12. Crossover Frequency – Since component speakers (like woofers) are designed to reproduce certain frequency ranges, a crossover allows you to match the speaker to the appropriate frequency range. Most manufactures list a recommended crossover frecrossover point will provide increased speaker reliability and optimum sound quality. The ACM-1.300 12 dB/Octave Linkwitz-Riley crossover points at 80 Hz, 120 Hz, and a “bypass” option. The ACM-1.300 will play the frequency range below the crossover point.
Quick Start running: 7. Connect the +12V input terminal of the unit to the +12V terminal of the vehicle battery. Use 8 gauge insulated wire or thicker. 1. Undo the +12V and Ground connections to the car battery 8. Connect the Ground terminal of the unit to the chassis of the vehicle using the same wire gauge as the +12V power wire. 2. Pick a mounting location that will provide access to the controls and connections, provide plenty of good ventilation, and also 9.
Power Connections Head Unit Remote Amplifier +12V Trigger In this example, the head unit has a +12V trigger output that is connected to the ACM-1.300 remote input terminal. When the head unit is turned on, it will turn on the ACM-1.300 Alternatively, the GTO™ signal sense feature can be used to gently turn on the ACM-1.300 when an audio input signal is detected. (The connection to the ACM-1.300 remote input terminal is not required when using the GTO™ signal sense.
System #1: Adding a Subwoofer to a Factory Radio using Speaker-Level Inputs Subwoofer Factory Radio + Speaker-level outputs + + ACR-1 (optional) + + lf two subwoofers are connected like this, they are in parallel, and the impedance of each subwoofer must be 4 Ohms or greater.
System #2: Adding a Subwoofer to an Aftermarket Head Unit using Line-Level Inputs Subwoofer Aftermarket Head Unit Line-level L/R outputs R L + + ACR-1 (optional) + lf two subwoofers are connected like this, they are in parallel, and the impedance of each subwoofer must be 4 Ohms or greater.
Cover Plate Removal The cover plate must be removed to gain access to the controls, and then put back on again to protect the controls 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. 9.410” 8.910” 8.300” Keep the cover plate and screws in a safe and the controls to your immense satisfaction. 2.38” 2.97” 1.
Protection Codes Power Output (RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Watts @ 4 Ohms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 Watts @ 2 Ohms Input Voltage (RCA) Range . . . . . . . . . . . . . . . . . . . . . . . .500 mV to 6 V RMS Speaker-Level Input Voltage Range . . . . . . . . . . . . . . . . . . . 3 V to 40 V RMS Total Harmonic Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 0.
