About the AudioControl The Epicenter® Micro

Add bass to your aftermarket system's high-level source
Add bass to your aftermarket system's high-level source
Most factory radios dial down deep, low-hitting bass notes to protect flimsy factory speakers. The Epicenter Micro from AudioControl takes amplified speaker-level signals, converts them into the high-quality preamp signals your sub amp needs, and then adds the bass that's missing. Even when listening to traditionally bass-weak classical, jazz, folk, or Tejano music, you'll finally be able to hear all the good bass you've been missing.
How does it do it?
Sophisticated processing analyzes the incoming signal and synthesizes low-bass fundamental tones, increasing bass response tremendously. A single band ParaBASS® equalizer lets you fine-tune your subwoofer's tone. A selectable subsonic filter removes extreme low frequencies so your amps and subs will play more efficiently. The Epicenter Micro will also connect to any receiver with preamp outputs — its balanced inputs will reject noise from your car's electrical system for ultra-clean output.
Installation conveniences
The included ACR-4 dash-mount wired remote control allows you to adjust the level of your sub channel on the go. Load selection switches make OEM factory system integration easier, so The Epicenter Micro will work with almost any vehicle's sound system. Selectable turn-on modes include GTO™ Signal Sense (DC offset), audio sigal , or remote 12-volt input.
Product highlights:
- active 2-channel line driver/output converter with bass restoration
- designed to work with aftermarket and factory systems
- provides up to 9.5 Vrms output (selectable level: 5, 7, 10V)
- preamp and speaker-level inputs
- speaker-level inputs handle up to 40V (400 watts RMS)
- speaker-level inputs feature switchable load resistance (20, 60, or 20,000 ohms) to prevent factory stereo shut-down
- Epicenter bass restoration increases bass response
- Para-Bass controls adjust center-frequency and width of bass EQ processing
More info:
- ACR-4 wired remote included
- switchable Programmable Frequency Match (PFM) subsonic filter (20 Hz, 12/dB octave)
- selectable ground isolation helps eliminate noise
- auto turn-on via 12V remote, DC offset, or audio signal detect
- 12-volt turn-on lead output
- wiring, fuse, and hardware not included with device
- 18-gauge power and ground leads and a 1-amp fuse recommended
- dimensions: 5-1/8" W x 1" H x 3" D
- warranty: 5 years
- MFR # 8411110
What's in the box:
AudioControl The Epicenter® Micro owner's manual
- Bass Restoration Processor
- Two 4-pin Phoenix connectors (installed)
- ACR-4 wired remote control (dash mount)
- 17' RJ-14 Remote cable
- 1.5mm Hex key
- Quick start guide
- QC checklist
Reviews (14)
Customer reviews for AudioControl The Epicenter® Micro
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More details on the AudioControl The Epicenter® Micro

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Features
Bass Restoration: Rather than simply turning up the bass, the patented bass restoration circuit takes a full range input signal and measures the upper harmonics of the bass frequency range to determine what frequencies have been lost through the recording process, streaming algorithms or other processes, then correctly restores the missing bass information. The two remote rotary knobs allow you to control how much bass is restored to the system and the output level. A full range signal is output from the Epicenter that can feed a full range amp, a subwoofer amp (with built-in crossover), an outboard crossover or DSP.
Bass Maximization: The Bass Maximization circuit allows The Epicenter to maximize the bass output of any system while restraining destructive bursts, which can damage speakers.
Controls:
- ParaBASS: single band parametric equalizer for the bass
output
- Wide: width of the parametric band is adjustable
- Sweep: center frequency continuously variable 27-63 Hz (45 Hz in the middle)
- Load Select: set speaker level input load
- 20Ω: typically used with factory systems that have no amplifier (base system)
- 60Ω: typically used with factory systems having a separate amplifier (premium system)
- 20 kΩ: used for all other applications
- Balanced Inputs: a balanced differential input circuit cancels noise picked up in the input transmission line; jumpers inside the chassis can be changed to unbalanced if needed
- Trigger Mode: set how the Epicenter is turned on
- Remote: turns on with +12 volts on the remote in terminal
- GTO: (Great Turn On) turns on with the factory amplifier
- Audio: turns on when an audio signal is sensed at the input; speaker level or line level
- Ground Isolation: 3-position switch for power supply ground; Ground, ISO, 200Ω; best setting is typically the default ISO (fully isolated), but if you have noise try the other settings
- PFM Subsonic Filter:
- On: removes frequencies below 20 Hz
- Off: filter is bypassed, generally a bad idea, particularly with ported sub enclosures
- Output Voltage: set the maximum output voltage to match downstream processor/amp(s); 5 volts, 7.5 volts, 10+ volts
Remote: The wired remote has two concentric knobs; the outer knob controls the bass restoration level and the center knob controls the overall output level (volume). The remote is designed to be dash mounted, within reach of the driver; it can be mounted under the dash with the supplied bracket, or the bracket can be removed and the knob and LED can be custom mounted through the dash.
Note: For the Epicenter Micro to work properly, the included wired remote control must remain connected.
Remote Dimensions:
- Width: 1.2" (1.76" including mounting flange)
- Height: 1"
- Depth: 1.4" (2.5" including knob)
Connections:
- Power Terminal Block: 4-pin Phoenix connector; can be
removed to attach wiring; accommodates up to 12 gauge wire
- Power: constant +12 volts; 18 gauge wire minimum and a 1-amp fuse recommended
- Ground: chassis ground; 18 gauge wire minimum recommended
- Remote In: used to turn the unit on; 18-22 gauge wire recommended
- Remote Out: +12 volt output when the unit is on; used to turn other components on; works in all three trigger modes; 18-22 gauge wire recommended
- Speaker Level input Terminal Block: 4-pin Phoenix connector, inputs for left and right speakers; can be removed to attach wiring; accommodates up to 12 gauge wire
- Line input: stereo RCA jacks
- Note: The speaker level or RCA inputs are used, not both.
- Line output: stereo RCA jacks
- Bass Level Control: RJ-14 jack for the included wired remote control
Specifications:
- Maximum Line Level Input: 15 volts RMS
- Maximum Speaker Level Input: 40 volts (400 watts) using 20 kΩ input load setting
- Line Input Impedance: 7 kΩ
- Speaker Level Input Impedance: 20Ω, 60Ω, 20 kΩ
- Maximum Output Level: 9.5 volts RMS/13 volts peak
- Output Impedance: 150Ω
- THD: 0.03%
- Frequency Response: 10 Hz-22 kHz; ±1dB
- S/N Ratio: 105 dB
- PFM Subsonic Filter: 20 Hz/off (bypass)
- Current Draw: 300mA
- Recommended Fuse: 1-amp
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Customer Q&A
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Love the micro, I had an older model and stepped up to the micro and it's everything I hoped for. Trying to set it to work with every song but love being able to adjust it at a fingertip. 10 out of 10 I swear. LOL
Jonathan from Brentwood N Y