Features

Overview: The Audio Control ACX-3.2 is an all-weather sound processor that's designed for on-road, off-road, or off-shore sound systems. It features a 4-band EQ, High/Low crossover, built-in line driver, and a PTT (Push-To-Talk) microphone.

Controls:

• 3-Band Graphic EQ: Three rotary knobs let you adjust the signal +/-12 dB at 125 Hz, 1.25 kHz, and 10 kHz. There's an indent at each knob's center position so it's easy to return to the flat setting.
• Para-Bass: Para-Bass is a single band, parametric equalizer for the bass output. Like the three graphic EQ bands, the adjustment range is +/-12 dB; the center frequency is continuously variable from 40 Hz to 80 Hz.
• Equalize: A push-button is used to activate the EQ section; when Off, the EQ will be bypassed.
• Crossover: The ACX-3.2 has a built-in high-pass/low-pass crossover with dedicated On/Off switch on top of the processor. A corresponding frequency dial lets you select the cutoff frequency with a range of 30-300 Hz. The Linkwitz-Riley crossover has a 24 dB/octave slope. When the crossover On/Off switch is On, high-pass frequencies are applied to the front and rear line outputs while the low-pass is applied to the subwoofer output. If the crossover is Off, a full range signal will be sent to the front and rear outputs and the subwoofer output will still be crossed over at the selected cutoff point.
• Volume: If you choose, you can adjust the system volume using the ACX-3.2's volume knob. This allows you to leave the source volume at it's maximum un-clipped level, resulting in the best signal to noise ratio and dynamic range output from the source.
• Subwoofer Level Control: The relative subwoofer volume is adjusted using the rotary Sub Level control on the front panel.
• Fader: Because there is only one stereo line input and both front and rear line outputs, the front panel fader knob is needed to adjust the relative front and rear volume.
• Input Level & Indicator: The input signal level for the left and right channels is set using the Level dial, providing 0 dB to +20 dB of gain. A corresponding Maximized LED starts to flicker as you reach the maximum unclipped voltage.

PTT Microphone: The ACX-3.2 includes a hand-held Push-to-Talk microphone that lets you communicate through either the front or front & rear outputs. The paging feature is ideal for communicating with wakeboarders or other boaters, food truck order paging, or keeping in touch with other riders while off-roading. A rear-panel Mic Gain dial lets you adjust the signal balance between the mic and your audio.

Line Driver: To achieve the best possible signal to noise ratio and dynamic range, the built-in line driver can increase the head unit's output voltage up to 20 dB (up to 7 volts RMS/9.5 volts peak).

Connections:

• Audio Inputs: A single pair of RCA jacks provides the signal input for the processor.
• Audio Outputs: Three pairs of RCA jacks (Front, Rear, and Subwoofer) provide the outputs for running to outboard power amplifiers.
• Terminal Block: The power/ground/remote/illumination connections terminate in a removable terminal block that plugs into the rear of the processor and can accommodate wire up to 16-gauge.

Additional Settings: Four jumper settings can be accessed by removing the top cover of the ACX-3.2.

• Balanced Input: Using the balanced differential input circuit may cancel noise picked up in the transmission line between the ACX-3.2 and the source unit. Options inlcude Balanced (default) and Unbalanced.
• Mic Signal Rounting: Determines if microphone siganls are fed to the Rear Outputs (default) or Front & Rear Outputs.
• Ground Isolation: The power supply ground is switchable, in case of ground loop noise. The factory position is fully isolated (typically the best choice), but can be changed to Ground or 200Ω.
• Illumination: The outer ring of each knob is lit whenever the illumination terminal is energized. The color is switchable between blue and red. The illumination wire can be connected to a factory dash light dimmer, letting you dim the illumination on the processor along with the dash lights.

Mounting: The Audio Control ACX-3.2 includes two mounting brackets that allow the processor to be mounted on top of or underneath a console or dash. The PTT microphone also includes a mounting bracket, letting you keep the mic within easy reach.