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Alpine RUX-KNOB.2 Remote subwoofer level control

Item # 500RUXKNO2

California customers:
Please click here for your Proposition 65 warning.

19 questions - 35 answers

Item # 500RUXKNO2

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About the Alpine RUX-KNOB.2

Buck Pomerantz

Alpine Authorized Online Dealer

Tweak the subwoofer volume from the driver's seat

The RUX-KNOB.2 remote level controller works with Alpine's amplifiers so you can manage your bass level from the front of your vehicle. This handy little knob adjusts your amp's level from its set maximum volume all the way down to virtually "off." Since it adjusts level and not "bass boost," you'll maintain the same bass tone as you turn the volume up and down. You can control multiple amplifiers with a single remote by adding a standard phone cable splitter (not included).

Product highlights:

  • remote level controller for Alpine amplifiers
    • mono amps
    • sub channel of 5-channel amps
    • bridged channels 3/4 of the X-A70F
  • adjusts gain from 0 to -12 dB
  • multi-amp capable (standard phone cable splitter required — not included)
  • 16' connection cable
  • warranty: 1 year
  • MFR # RUX-KNOB.2

What's in the box:

  • Alpine Remote Bass Level Control module
  • 16.4' (5 meter) connecting cable (RJ-14 plugs on both ends)
  • 4 Self-tapping screws (Length 1/2")

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4.5 out of 5 stars
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More details on the Alpine RUX-KNOB.2

Mark G.
The Alpine RUX-KNOB.2 replaces these items:

Product Research


Overview: The Alpine RUX-KNOB.2 is a Remote Bass Level Control for compatible Alpine amplifiers. It allows you to adjust the bass output of the amplifier remotely from the driver's seat. The RUX-KNOB.2 comes with a 5-meter (16.4 feet) cable with an easy plug-'n-play installation.

Compatibility: The RUX-KNOB.2 is designed for controlling the overall output level of Alpine mono amps, the level of bridged channels 3/4 of 4-channel amps, or the subwoofer channel of 5-channel amps. It is compatible with the following Alpine amplifiers (as of August 2017):

  • X Series: X-A70F, X-A90V, X-A90M
  • PDX Series: PDX-M12, PDX-M6, PDX-V9
  • MRX Series: MRX-M55, MRX-M110, MRX-M240, MRX-M50, MRX-M100, MRX-M200, MRX-V60, MRX-V70
  • Power Pack Series: KTA-200M
Note: The RUX-KNOB.2 can be used with amplifiers that are compatible with the older RUX-KNOB.

Rotary Control: The Alpine RUX-KNOB.2 is equipped with a rotary knob for adjustment of your connected amplifier's bass level. The remote has an adjustment range of 0 (max) to -20dB (min).

Mounting: The RUX-KNOB.2 features two mounting flanges for mounting the knob on or under your dash. Four self-tapping screws are included.

Dimensions: The RUX-KNOB.2 has the following dimensions:

  Width Height Depth
Module 1" 1.015" 1.656"
Overall 1.772" 1.015" 2.243"

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Customer Q&A

19 questions already asked

Your Harman RBC controller is on backorder. Will this knob work on the JBL Basspro 12 system? It appears as if the amp has the phone jack style connection. Just want to make sure they are all compatible.
josh  Sep 17, 2023
1 answer
Although both remotes use RJ-14 connectors, the RUX-KNOB.2 is not designed to be used with amps/powered subs from other brands.
zachary  Sep 17, 2023 (Staff)
If I'm using the RUX, where should I set the gain on my sub channel? Flat, Max?
chris  Jul 17, 2023
1 answer
When setting the gain on your amp, the knob should be turned all the way up. You should then set the gain as usual. This knob functions by reducing bass when turned counterclockwise. When turned all the way up, it simply allows the full output of the amplifier in accordance with the setting of the gain knob. Do NOT turn the gain to max as this could lead to distortion or a blown sub.
zachary  Jul 18, 2023 (Staff)
i have an alpine pdx-v9, will this only control the sub output, or will it control all 5 channels?
nicholas  Jun 29, 2023
1 answer
Greetings Nicholas, and thank you for your question. This controller is just for the bass level, not all channels.
hogan  Jun 29, 2023 (Staff)
Will this work with my aunex 1500w amp?
chris  Mar 21, 2022
1 answer
It should work I'm pretty sure if you're worried about the power from the amp it's just a volume knob for your subs.
don  Mar 24, 2022
Can this work with an mrp-m1000 Alpine Amp?
michael  Dec 07, 2021
1 answer
No the mrp-m1000 does not have the phone jack style connector that's required to plug in this bass knob.
timothy  Dec 09, 2021
Will it work with the mrx-m55 amp?
darold  Aug 03, 2021
1 answer
Yes! It will work!
thomas  Aug 06, 2021 (Staff)
With this work with the alpine MRV-500?
illustrioussoto  Jan 08, 2021
3 answers
If the amp that you have is an Alpine MRV-M500 then yes it will work.
douglas  Jan 10, 2021
yes, that is the setup i have
steve  Jan 09, 2021
Yes, it works with that amp. I have the exact set up.Enter
carl  Jan 08, 2021
Will this knob work for a Alpine BBX-T600 Amplifier hooked to a 10" alpine tube sub?
dalton  Jan 03, 2021
2 answers
Yes it will
noel  Jan 04, 2021
As long as you amp has the port for a control knob it will work. What ever sub you hook up to it won't matter.
samuel l  Jan 03, 2021
Will this work with non-alpine amplifiers?
michael  Nov 20, 2020
3 answers
We have tested to check its compatibility with other brand amps and recommend locating a controller that is rated to work with your amp. We carry other controllers and have advisors that you can reach by calling 1-800-324-9695 to check if we have one for your amp.
jason  Dec 06, 2020 (Staff)
yes it will
noel  Dec 04, 2020
This only works with specific Alpine amps. It should give a list of which ones on Crutchfield
erik  Dec 03, 2020
does this knob work with Alpine S-A60M?
darien  Jun 21, 2020
2 answers
Yes this knob will work with the A60M. You can confirm this by reviewing the amps Product Highlights area. This knob is a must have unless your amp is in your lap (which Im sure it's not).
arthur  Jun 21, 2020
These are a must for any amp running bases speakers. Easy to install and adjust base volume on the fly.
gary  Jun 21, 2020
Can this be wired to control the volume of my Alpine head unit?
jr  May 17, 2020
3 answers
Although it might not matter either way; you did not include your model head unit in your question. Since this appears to be a potentiometer style controller, it is unlikely to work with any modern style head unit as a volume control. Unless your unit has specifications to work with this knob in such a fashion, it will not work. Long story short, no. It does work great in attenuating the output of an Alpine MRV-M500 though.
ryan  May 21, 2020
This is used to adjust the input level to an amp. I use mine on a sub amp to attenuate the amount of bass as the levels vary with different songs and different recordings, etc. Now I'm curious, may I ask why you would want to adjust the volume of a head unit with this as opposed to just using the head unit's volume knob?
tommy  May 17, 2020
I only used the control to adjust the bass so unfortunately I can't help
allan  May 17, 2020
Does the knob come with the cable wire if not what other knobs and wire are alike too this one? Looking too connect too alpine MRV-M500
jorge  Feb 17, 2020
4 answers
Yes it comes with the cable. It is plenty long enough as well for 99% of vehicles. Definitely worth having in the system
harley  Feb 20, 2020
yes it comes with wire. I don't remember if it is 6 or 10 or more feet of wire but it should be enough for most applications. with the alpine rux knob it does not take the place of gain like in some other rux knobs, but instead it allows you to use full gain where it is set or turns it down from there. so if you want to use it to turn up bass for music with less bass you'll have to set your gain higher and use the knob to turn down bass for punchier music.
joseph  Feb 17, 2020
Comes with the wire
gary  Feb 17, 2020
When I ordered it, it come with the cable, so I would assume it will still come with the cable. And I'm using this with my Alpine MRV-M500 Hope this helps
justin  Feb 17, 2020
What's the difference between using the RUX-KNOB and the built in equalizer inside my Kenwood 396 header inoder to increase or decrease footprint of the amp?
stephen r  Jan 27, 2020
1 answer
Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget.
kristina  Mar 02, 2020 (Staff)
Will this work on the pwe-s8 powered subwoofer?
joseph  Jan 10, 2020
1 answer
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.
thomas  Feb 13, 2020 (Staff)
Does this work with the MRV-F450?
chris  Jun 02, 2019
1 answer
Unfortunately, Chris, Alpine RUX-KNOB.2 isn't a compatible option for the Alpine MRV-F450 amp. I did some research on the MRV-F450, and I'm not seeing an option for a compatible remote with that amp. Feel free to reach out to us by chat online, or by phone, we'll be happy to help. 1-800-324-9695
jessica  Jun 16, 2019 (Staff)
Need a bass knobs that will connect to planet audio big bang 4000 watts amp?
toriano  May 28, 2019
2 answers
That bass knob uses a proprietary connection specific to Alpine amps. I don't have anything specific to Planet Audio but if you have it connected via RCA cables you could use a universal level controls like this EFX:
casey  Jun 10, 2019 (Staff)
I bought it because it was made for Alpine amps. Using it for a different manufacture is taking a chance that it might not work. Check to see if the manufacturer of you amp has an bass controller.
bill  Jun 06, 2019
Will this work with the Alpine PWA-S10V?
david  Apr 12, 2019
3 answers
Per Alpine..... COMPATIBLE MODELS The RUX-KNOB.2 is specifically designed as the controller for use with any of the following PDX Amplifiers: MRV-M1200, Mrv-M500, MRV-M250, PWA-S10V, KTP-190U, MRX-M50, MRX-M100, MRX-V60, PDX-M12, PDX-M6, PDR-M65, PDR-V75, PDX-V9, X-A70F (3 Channel Mode), X-A90V, and X-A90M.
tracy l.  Apr 12, 2019
The PWA-S10V uses a MRV-M250 amp which does work with the RUX-KNOB.2
timothy  Apr 12, 2019
Yes it will, but the Control Knob needs to be paired with an Alpine AMP.
alton  Apr 12, 2019
Can the unit be disassembled for flush mounting?
rodney  Mar 02, 2019
3 answers
The Unit comes with two removable Brackets attached to it's sides. They can be removed by removing one screw, each. I mounted the Unit as is, just inside of a compartment opening below the Radio. I don't think you can take the housing off for a flush mount. This is about all that I can assist with regarding flush mounting. Al
alton  Mar 07, 2019
The two little L shaped brackets unscrew on each side. But it does not come with any other brackets to mount it with.
alexis  Mar 07, 2019
Yes. I've installed mine through the dash from and all that is visible is the knob.
brian  Mar 07, 2019

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