Features • Compact High Power 4-Channel Amplifier • High Current Design • 4 x 50 Watts @ 4 Ohms, 4 x 75 Watts @ 2 Ohms • 2 x 150 Watts @ 4 Ohms, Bridged Mono • 12 dB/Octave Linkwitz-Riley Alignment Crossover • GTO™ Signal Sense (Great Turn On) • 4 Speaker-level/ Line-Level RCA Inputs • All-weather IPX6 rated! • Filled with home-grown audio goodness ACX-300.
ACX-300.4 Important Safety Instructions 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 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. Do not install near any heat sources such as mufflers, silencers, exhaust pipes, or other apparatus (including amplifiers) that produce heat.
Connection Panel Features 1 2 3 1. Speaker Output – Connect these wires to your speakers using the included water resistant harness. Speaker wire may then be crimped or soldered onto the bare leads. Use a decent sized wire gauge as this baby is powerful! 2. Power Input Terminal +12V & Ground – Connect these wires to the +12V and Negative binding posts of the vehicle battery via one of two included harness options.
ACX-300.4 4 5 67 8 9 10 11 12 13 14 6. Protection LED - This LED will shine if there is a problem being sensed by the unit. See troubleshooting section for best practice to determine the cause. speaker wire connector. The mono loudspeaker will receive the power from each channel, and both channel inputs must be fed an input signal. The minimum impedance is 4 Ohms. 7.
Control Panel Features 9. Input mode - If you have both front and rear input signals available - either by speaker level or line level - set this adjustment to 4 Ch mode. If you only have 2 signal wires, then set this to 2 Ch and the signal received on inputs 1/2 will be distributed out to 1/2 and 3/4 amplifier outputs. 10.
Quick Start Here are a few general steps to get your ACX-300.4 amplifier up and running: 1. Undo the +12V and Ground connections to the vehicle 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. 3. The ACX-300.4 amplifier needs to be securely mounted using the four mounting holes located in each corner. 4.
ACX-300.4 Power Connections In this example, the head unit has a +12V trigger output that is connected to the ACX-300.4 remote input terminal. When the head unit is turned on, it will turn on the ACX-300.4 amplifier. Speaker-level outputs To battery Alternatively, the GTO™ signal sense feature can be used to gently turn on the ACX-300.4 amplifier when an audio input signal is detected. (The connection to the ACX-300.4 remote input terminal is not required when using the GTO™ signal sense.
System #1: Using Speaker-Level Inputs + OUT PUT 4 OUTP UT 3 OUTPUT 2 INPUT 4 OUTPUT 1 INPUT 3 Speaker level outputs 80Hz and up + INPUT 2 INPUT 1 OUTPUT INPUT 2 INPUT 1 Source unit Speaker level output 80Hz and down Signal Wires 8
Cover Plate Removal The cover plate must be removed to gain access to the controls, and then sealed again to protect the controls against moisture and debris. Removal Procedure 1. Locate the top six hex screws that hold down the sealed top cover. 2. Use a 2.5mm hex wrench to remove the six screws. +12V GND 3. Gently lift cover off. It’s a very tight fit there, so you may need to use some gentle force. Yes, it is with you! 4.
ACX-300.4 Specifications All specifications are measured at 14.4 VDC (standard automotive voltage). As technology advances, AudioControl reserves the right to continuously change our specifications, like our Pacific Northwest weather, although we are working on changing that as well. The ACX-300.4 Amplifier Warranty Power Output (RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4x50 Watts @ 4 Ohms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
