Your cart
Contact us
Close contact box
Connect ID #
360 363 812 4
Connect ID #
360 363 812 4
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

All of our representatives are
currently chatting with other customers.

Please enter your name.  
Please enter a valid email address. Why is this required?

For Tech Support, call 1-888-292-2575

All web chat conversations are recorded. We use automated technology to connect you with an Advisor and to answer some common questions. If you do not consent, please do not continue with chat assistance.

Thank you, !
Our conversation will be emailed to
Chat Advisor Image

Your Advisor,

More about me
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  
Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

The Epicenter® by AudioControl

Bass restoration processor (White)

Item # 161EPICEW

You like all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into any...

You like all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into any...

Discontinued item
23 questions - 38 answers

Item # 161EPICEW

Free custom vehicle instructions

Installation help for your car, from our experts.

Car-specific installation packages

Deep discounts on the essential accessories that help your new gear work with your car.

Hands-on research

We double check the details on each item.

About the The Epicenter® by AudioControl

Kick up the bass

You like all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into any kind of music — from classical, jazz, and rock to folk and Tejano — with an AudioControl Epicenter bass restoration processor. Most factory radios dial down bass response to protect flimsy speakers, so when you do add a subwoofer, there's no bass to play. The Epicenter will bring it back.

Kick up the bass

You like all the bumpin' bass you hear in hip hop, rap, and EDM? Well you can put that deep, biting bass into any kind of music — from classical, jazz, and rock to folk and Tejano — with an AudioControl Epicenter bass restoration processor. Most factory radios dial down bass response to protect flimsy speakers, so when you do add a subwoofer, there's no bass to play. The Epicenter will bring it back.

AudioControl's legendary Epicenter bass processor maximizes the low-frequency power and punch of your bass system, whether it's a simple powered bass tube or a full-blown competition setup. Simply install this processor between your receiver and your amplifiers or crossovers, and you'll finally be able to hear all the good bass you've been missing. An included wired remote lets you control the amount of thump from the front seat.

How does it do it?

Sophisticated processing analyzes the incoming signal and synthesizes low-bass fundamental tones, increasing bass response tremendously. The Epicenter connects to any receiver with preamp outputs — its balanced inputs will reject noise from your car's electrical system. A subsonic filter removes extreme low frequencies from your signal so your amps and subs will play more efficiently, while a single band ParaBass equalizer lets you fine-tune the bass tone.

Upgrade available

AudioControl's Epicenter bass restoration processing is also available in The Epicenter Micro, which features a compact chassis, high-level inputs, and selectable load resistors for better OEM factory system integration.


Product highlights:

  • bass restoration processor (white)
  • increases bass response from your system
  • 2-channel preamp inputs and outputs
  • Para-Bass controls adjust center-frequency and width of bass processing
  • fixed subsonic filter (33 Hz, 12/dB octave)
  • wired dash-mount bass remote
  • 8"W x 6-1/2"H x 1-3/16"D
  • frequency response: 10 to 100,000 Hz
  • weight: 1.7 pounds
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # 8410191

What's in the box:

  • Pre-amp Bass Restoration Processor (white)
  • Remote dash mount control
  • 20' RJ-14 cable
  • Owner's manual
  • QC checklist

Customer reviews

Loading reviews...

The Epicenter® by AudioControl reviews

Average review:

88 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)



Crutchfield response

<< >>

More details on the The Epicenter® by AudioControl

Russ B.

Product Research


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 during the recording process, then correctly restores the missing bass information. The remote rotary knob allows you control how much bass is restored to the system. A full range signal is output from the Epicenter that can feed a full range amp, a subwoofer amp (with built-in crossover), or an outboard crossover.

Para-Bass: Para-Bass is a single band, parametric equalizer for the bass output. The center frequency is continuously variable from 27 Hz to 63 Hz. The width of the band is also adjustable.

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. the 5.0 volt factory setting can be changed to 2.5, 7.5, or 10 volts if the amplifier and speakers can handle it.

Remote: The bass restoration level is adjusted using the included wired remote. 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. Dimensions:

  • Width: 2.557"
  • Height: 1.489"
  • Depth: 1.824" (2.448" including knob)

Subsonic Filter: The subsonic filter crossover point is 33 Hz; it's governed by a replaceable chip, so it can be changed to 20, 25, 30, 35, 40, or 45 Hz.

Balanced Inputs: Using the balanced differential input circuit cancels noise picked up in the transmission line between the Epicenter and the the source unit. The inputs can be set to balanced or unbalanced if needed.

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.

Terminal Block: The power/ground/remote terminal is removable; the wiring is attached to the block, then the block is plugged into the Epicenter.


  • Maximum Input Level: 15 volts RMS
  • Maximum Output Level: 9.5 volts RMS/13 volts peak
  • Frequency response: 10 Hz-100 kHz;±1dB
  • THD: 0.003%
  • S/N Ratio: 130dB
  • Balanced Input Noise Rejection: >60 dB
  • Input Impedance: 10 kΩ
  • Output Impedance: 150 ohms

Loading accessories...

Customer Q&A

23 questions already asked

If you add an on/off switch will it go into bypass when it's powered off so rap music for instance is not effected at all? Or will it stop the outputs with no power?
[ JAMES  Dec 28, 2022 ]
1 answer
It will turn completely off. The included remote knob would be the way to adjust the amount of bass restoration desired.
[ Nemo  Dec 29, 2022 ]  Staff
Can this be used as a line output converter also?
[ Jason  Nov 23, 2022 ]
1 answer
No, it does not accept speaker level input. It only takes in preamp level audio. Our line output converters can be found here:
[ Paul  Nov 23, 2022 ]  Staff
Should the subsonic on the amplifer be at the lowest setting 10hz on my amp which has a 24db/octave. My epicenter has a pfm 25hz/18db chip. Both wide and sweep set at 12oclock position. Both subs and ported enclosure tuned for 32hz. Any thoughts would be appreciated on subsonic subject or any better suggestions?
[ James  Nov 01, 2022 ]
1 answer
Greetings James, and thank you for your question. This is more set up/technical support related. If you purchase the Epicenter from Crutchfield, there is a tech support number to call in on your shipping confirmation email. If you purchased the Epicenter elsewhere, you can get the support you need directly from AudioControl by calling 425-775-8461.
[ Thomas J.  Nov 02, 2022 ]  Staff
Do I hook up the rca from head unit to epicenter or from equalizer to epicenter?
[ MATT  Aug 29, 2022 ]
1 answer
The Epicenter should be connected before the equalizer. In this situation, it would be ideal to go from the head unit to the Epicenter, then from the Epicenter to the equalizer.
[ Nemo  Aug 29, 2022 ]  Staff
While I realize Audio Control says you should feed this thing a full range signal, I'm hoping I can cheat a little bit. My Alpine 172BT has an adjustable sub-out filter of 80-250 Hz which cannot be disabled. Since one octave below 250hz is still pretty high at 125hz,and sub is filtered at 80hz, would I still get desired reults with this unit? Surely someone has faced this issue before?
[ Donald  Jul 09, 2022 ]
1 answer
Greetings Donald, and thank you for your question. You will still get desired results with the Epicenter, however when getting a full range signal input, it is going to be looking at all the upper frequencies as well, and adding bass frequencies as needed. Without that full range in, your not getting 100% of the Epicenters capabilities.
[ Thomas J.  Jul 10, 2022 ]  Staff
Do i need this unit with the audio control 1500 and audio control d4.800 amps i have both amps if so do i connect the epicenter to the rear RCA's of my aftermarket head unit's sub or Rear full range? Or does the d4.800 block the epicenters functions?Also when i turn the crossover on the 1500 to the highest setting so i can set sub frequencies from the d4.800 to the 1500 is the epicenter doing anything?
[ Anthony  Jun 11, 2022 ]
1 answer
The primary function of the Epicenter is to create deep bass frequencies that are not already present in a piece of music. This is a function that neither the LC-1.1500 nor the D-4.800 have built-in, so there is still a purpose for the Epicenter in your system if you want to add more bass to your music. Ideally the Epicenter will receive a full range signal, which you can get from the back of your headunit or from the line output of the D4.800.
[ Nemo  Jun 12, 2022 ]  Staff
Is it his only used for the bass channels?
[ John  Mar 14, 2022 ]
4 answers
Yes. Only used on the woofer/subwoofer side.
[ MIKE  Mar 15, 2022 ]
Yea only for subwoofers
[ OMAR  Mar 14, 2022 ]
Yes it is.
[ RICARDO  Mar 14, 2022 ]
Yes sir!
[ MICHAEL  Mar 14, 2022 ]
Can this be used for a powered sub?
[ bradley  May 13, 2021 ]
3 answers
You should be able to. Just check if you can turn off your powered subs frequency settings.
[ RICARDO  May 13, 2021 ]
Yes. It only affects the low level (RCA) inputs.
[ MIKE  May 13, 2021 ]
Absolutely not!!!..this one only give you extra bass signal to you system ..this is not a amplifier!! connect this between the stereo and the amplifier...
[ Miguel  May 13, 2021 ]
I hear that these epicenter units are mainly for use with factory installed Stereos. Does this unit help with the source of the music such as albums that Were poorly mastered or mixed or mass produced slbums that kust font seem yo have much bass? Or it strictly yo correct thr editing of factory installed head units?
[ Salvatore  Feb 13, 2021 ]
2 answers
I have two vehicles I own with the epicenter installed with aftermarket head units. One vehicle has the in dash version and the other has the trunk mount version. I wouldn't install a system without one. Especially with compressed music like digital and poor recordings. You can really fine tune the bass response for clean elegant response or you can get crazy and go as low as you want. Love them both. Hope this helps.
[ RICARDO  Feb 13, 2021 ]
I'm pretty sure that epicenters description of this item is exactly what you are describing. It restores the bass that was removed in the editing process when the music was created. That's why I got mine.
[ Nathan Wilson  Feb 13, 2021 ]
I'm still using my factory head unit which doesn't have any pre-outs. I am running my sub amp inputs from a simple line-output converter that uses speaker level inputs and changes it to a RCA cable outputs. The bass seems kind of "muddy" for most music (not clear, crisp, and defined seperate from the door speakers) and I have tried tuning different frequencies, but can't get the control I want. I think this product will help me with that, but can it be used from a speaker level line output converter like I have set up?
[ Brandon  Jan 29, 2021 ]
2 answers
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Feb 12, 2021 ]  Staff
Have you made sure that your ground has a clean good connection on your amp and make sure the output addons has good connection as well. I w q s having issues with my system doing the same thing and it was my ground on my.amp.
[ Raymond  Jan 29, 2021 ]
I already have a DQ-61, will this help out my subwoofers sound better?
[ Frank  Jul 20, 2020 ]
2 answers
Yes, if you take the subwoofer rca outputs and plug them into the Epicenter then your sun amp it will work. Look at the DQ61 manual, it shows a picture on how to install with Epicenter on DQ61.
[ Michael  Aug 26, 2020 ]
[ Sean  Jul 20, 2020 ]
I already have an amp in my trunk. Where do get power from? Do I use a distribution block to get the epicenter 12v power?
[ Jeffrey Moeller Jr.  Jun 29, 2020 ]
3 answers
The epicenter is not a high power device, it does not require a high amp power source like your amp. Mine is tied into the same batt and ign feed as my Eq and head unit. You can also go directly to the fuse panel.
[ MIKE  Jul 04, 2020 ]
You not have to put a distribution block..the epicenter no need to much power ..all you need bring 3 wires from your amp to the epicenter..the ground,the remote and the ground!!
[ Miguel  Jul 03, 2020 ]
Yes. Just use a splitter.
[ Thomas  Jul 03, 2020 ]
Do I need this if I'm going to be running the LC7i already ?
[ BassForMe  Jul 24, 2019 ]
1 answer
You only need the Epicenter if your going to listen to music that lacks bass information. If you listen to Rap it is way over board in the bass with all of the settings at minimum. If I had to do it over again I would bag the epicenter and just use your crossover. Your LC7I should sound great without it I'm thinking.
[ GUY  Jul 24, 2019 ]
Is the subsonic filter only active when the Epicenter is actually turned on?
[ T-Bone  Jan 24, 2018 ]
2 answers
Yes that's correct.
[ Sixtus Jn  Jan 24, 2018 ]
The subsonic filter is on all the time even if the Epicenter's processing is not being used. The PFM subsonic filter shipped with the Epicenter is set at 33 Hz. Sounds below 33 Hz will still play but at a decreasing volume as lower the sound . You can buy PFM filter chips from Audiocontrol directly by going to the AC website, clicking on "CAR" at the top, scroll down to "ACCESSORIES", and then click on "MODULES", and finally clicking on the "Buy Now" link on the blue line at the top. You have to pick the 18 dB/Octave choice for the Epicenter. The 24 dB/octave choice is for AC crossovers. Frequencies from 15 Hz and up are available and cost $10 each plus S+H.
[ Charles  Jan 24, 2018 ]
Does this product help to add the missing bass to the car door speakers? Only reason im looking at this is to improve my speakers. I have two 12 subs. I dont need sub bass. I want speaker bass.
[ Nick  Aug 22, 2017 ]
3 answers
You want more bass out of your door speakers? What crossover is used for them? Are they big enough to produce what you're looking for? The Epicenter adds bass back into music that may have been removed when converted to MP3 or during studio recording, etc. Most of what it adds to the music is in the sub bass range. This product doesn't necessarily add more volume throughout the sub bass range, only at the frequencies where it's been taken out. Audiocontrol's website has a great explanation of what it does and at what frequencies.
[ Charlie  Aug 23, 2017 ]
Not unless your door speakers are hooked up to your power amp, in which case I would recommend an LQ7 or LQ9 it lets you control the sound all around to your preference.
[ Antonio  Aug 22, 2017 ]
No, this will not get more bass into your door speakers. You are looking for more midbass, which is typically between 50-250 Hz. The Epicenter works its magic mostly under 50Hz. What you need is dedicated midbass speakers that are at least 6-1/2 inches in diameter or larger and have plenty of amplifier wattage powering them to get good midbass out of the door locations. There are other tricks to improve your midbass like adding sound damping materials to the doors and sealing all holes in the door. Search Youtube for videos on how to improve your midbass. Here are a couple of videos to get you started: 1. 2. Hope this helps.
[ Charles  Aug 22, 2017 ]
I recently installed a epicenter ,,I was wondering does the in dash remote adjust the level of bass,,it seems I have no room to dial it down,, is this normal?
[ Chad  Feb 26, 2022 ]
2 answers
No it doesn't adjust the bass level. The epicenter knob control lets you restore the bass some type of music has it removed. For example 80s or even Spanish music. I set the bass level at the Amp or the stereo's EQ also the epicenter setting I have it about a 1/4 on the sweep and 1/5 on the wide.
[ Danny  Mar 03, 2022 ]
You have to install the remote knob to adjust the volume of the bass
[ ILUMINADA  Mar 02, 2022 ]
Can it be used for a powered bazooka tube ?.
[ bradley  Feb 19, 2021 ]
2 answers
Yes. Amazing product too
[ JOHN  Feb 19, 2021 ]
[ Sean  Feb 19, 2021 ]
Does the Epicenter also act as the 9.5V RMS line driver or is it necessary to play an Overdrive in front of the Epicenter?
[ Mbrogz3000  Mar 31, 2017 ]
1 answer
The Epicenter can provide up to a 9.5volt signal output so, an external line drivers is not required. I hope that helps. My Bio:
[ Ryan  Apr 06, 2017 ]  Staff
Where do I connect the epicenter's rca's to the Headunit.. Sub out or rear out "full range".?? Or do I connect them on sub out and adjust the Headunit's settings to full range. Or is it the other way around. Please help.
[ Edgar  Jan 08, 2016 ]
1 answer
Edgar, I haven't hooked it up as of yet. The instructions note that you should hook it to the full range output before any crossovers. If your sub amp has an internal crossover, then I would set the head unit output to full range and make the frequency cut at the amp. I hope this helps. Thanks,
[ John  Jan 08, 2016 ]

Loading articles...

Compare the sound