User Guide for AudioControl Epicenter Micro Bass Restoration Processor

Quick Guide from the Manual

The AudioControl Epicenter Micro is a bass restoration and enhancement processor designed to improve low-frequency response in car audio systems. It is intended to be installed in the signal path between the source unit and the amplifier, ideally before any crossover or signal processor. Proper installation and tuning are essential for achieving the best bass performance without damaging your speakers.

Installation and Wiring

Before beginning installation, ensure the negative battery terminal is disconnected to prevent electrical shorts. Use 14 to 18 AWG insulated wiring for power and ground connections.

Placement and Mounting

• Placement: Install the unit in the signal path after the source and before any crossover circuit.
• Mounting: Select a permanent location, mark the holes, drill pilot holes, and secure the chassis using self-tapping screws. Ensure you are not drilling into fuel lines or existing wiring.

Power Connections

• Ground: Connect to the negative battery terminal, a ground bus, or a verified ground location. Do not use the factory head unit ground.
• Positive (+12V): Connect to a constant 12V source (battery recommended), fused at 1 amp.
• Remote In: Connect to the head unit's remote turn-on or switched 12V source.
• Remote Out: Connect to the amplifier's remote or 12V trigger input.

ACR-4 Dash Control Installation

The ACR-4 remote allows for level control of the bass restoration effect and overall sub volume.

• Bracket Mount: Mount under the dashboard using the provided bracket and four screws.
• Custom Flush Mount: Remove the knobs and enclosure. Drill a 9/32" hole for the potentiometer, a 1/8" hole for the lock tab, and a 1/8" hole for the LED. Reassemble the components on the dashboard.

Adjusting ParaBASS Controls

ParaBASS allows you to shape the bass restoration effect to your vehicle's acoustics.

• Sweep: Selects the center frequency (the frequency most affected) between 27 Hz and 63 Hz.
• Wide: Controls the shape of the filter centered around the Sweep frequency.

Output and Subsonic Filter Settings

• Bass Output Control: Adjust the voltage output settings (5V, 7.5V, 10V) to match your amplifier's input voltage rating and speaker size. Listen to the factory setting before making changes.
• PFM Subsonic Filter: A 20Hz filter that protects speakers from ultra-low frequencies. It can be bypassed if necessary, but use caution as this may damage subwoofers.

Troubleshooting

• No Power: Check the "Power" light on the chassis. If off, verify power and remote turn-on wire connections and check the fuse. If the remote LED is off but the chassis light is on, check the remote cable connection.
• No Restoration: Ensure the unit is installed before any crossovers. Check that the ACR-4 cable is fully plugged in. Try turning the outer knob clockwise.
• Distorted Sound: Decrease the bass restoration effect by turning the knobs counter-clockwise. Re-engage the PFM filter or lower the Voltage Output setting.