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Sound Ordnance B8PT Knob Kit

Replacement remote level control for B-8PT powered subwoofer

15 Reviews | 15 questions - 23 answers

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Item # 777B8PTKNB

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Our take on the Sound Ordnance B8PT Knob Kit

You can control your Sound Ordnance B-8PT powered subwoofer from the front seat with this remote control knob kit. This wired remote adjusts your amp's level from its set maximum volume all the way down to virtually "off." Since it adjusts the amp's level and not its bass boost, you'll hear consistent bass tone as you lower and raise the volume.

Does everything you need it to do!

Anonymous, Denham Springs, LA

What's in the Box:

  • Wired remote bass control
  • 14' Remote cable (RJ-14 plug on both ends)

Product Highlights:

  • remote level controller for Sound Ordnance B-8PT powered subwoofer
  • 14' connection cable (RJ-14 plugs on each end)
  • warranty: 1 year
  • Our 60-day money-back guarantee

Sound Ordnance B8PT Knob Kit Reviews

Average Customer Review(s):

(15 Reviews)

Sound Ordnance B8PT Knob Kit

Anonymous from Denham Springs, LA on 5/10/2017

Crutchfield Customer Review (What's this?)

Does everything you need it to do!



Nice knob

Darrin from Greer, SC on 3/17/2017

Crutchfield Customer Review (What's this?)

This knob is perfect for an amp knob, the only qualm would be the design of the product. Remember it takes RJ-14 types of plugs.

Pros: Works well Affordable RJ-14 Plugs

Cons: Design

Sound Ordnance B8PT Knob Kit

Ben from Tacoma, WA on 3/9/2017

Crutchfield Customer Review (What's this?)

Worked great and great service.



Great Remote

Brian from Copperhill, TN. on 3/6/2017

Crutchfield Customer Review (What's this?)

I own a Sound Ordnance Powered subwoofer, and bought it 2nd hand, so didnt get a Remote dial with it. I bought this, as ita same product line, and soeced for this sub woofer. Again, ny advisor Chance, cane thru with flying colors with his recommendations. Thanks again

Pros: Small, versitle mounting design

Cons: None

Bass knob

Michael from Splendora, TX on 1/29/2017

Crutchfield Customer Review (What's this?)

Easy set up.

Pros: Easy installation.

Cons: Does not seem to work with my jx-500 jl audio amp. :/

Not all Remote Cable (RJ-14 plugs are the same

Ken from Texas on 11/23/2016

Crutchfield Customer Review (What's this?)

Nicely made product but didn't do the trick for me. Apparently all Remote cable (RJ-14 plugs aren't the same. I tried using this on my JBL BassPro SL Subwoofer and it attenuated sound rather than increasing it.

Pros: Nicely crafted

Cons: Doesn't work with products other than Sound Ordnance

Crutchfield response on November 29, 2016 Whenever you are not completely satisfied with anything you purchase from Crutchfield, please contact our Customer Support team. Purchases from Crutchfield can be returned or exchanged within 60 days of the purchase.

Great product

Austin from CA on 10/21/2016

Crutchfield Customer Review (What's this?)

Works great!Got a S/O amp from a friend that he wasn't using,but missing the control knob.

Pros: Allows you to adjust for different bass levels in tracks.

Cons: None I can think of.

Bass knob

John L from Houston texas on 6/13/2016

Crutchfield Customer Review (What's this?)

Awesome product

Pros: Easy install

Cons: No mounting points

Sound Ordnance B8PT Knob Kit

Anonymous from Norman, OK on 6/5/2016

Crutchfield Customer Review (What's this?)

Great bass knob, has clicks for adjustment



Replacement for my sub

Kenny d from Roanoke va on 2/27/2016

Crutchfield Customer Review (What's this?)

Neededa replacement for my sub, happy I could buy this part.

Pros: Direct replacement

Cons: None

as advertised

jdpony from hopkins, MN on 2/17/2016

Crutchfield Customer Review (What's this?)

exactly as advertised. worked perfectly




Riley from Fl on 10/22/2015

Crutchfield Customer Review (What's this?)

Nice quality little to big onLybie works with there amps



Didn't work on a 00-03 year amp

David from California on 10/4/2015

Crutchfield Customer Review (What's this?)

It didn't work on my old Rockford Fostgate amp. I plugged it in an the bass was always full volume. Ended up reselling it.

Pros: Knob feels nice and smooth with clicks. Compact in size to hide anywhere.

Cons: Doesn't work on older amp models.

Sound Ordnance B8PT Knob Kit

Anonymous from Anaheim, CA on 6/2/2014

Crutchfield Customer Review (What's this?)

I agree whole heartedly with the other review. It is indeed a knob, that turns the subwoofer gain up and down. It does this job quite well, almost like it was the only function it had to perform. The cable is sufficiently long (RJ11 phone line) that it can be run from trunk to drivers seat if required.

Pros: It does it's job well

Cons: To nitpick, I imagine it could be engineered to be smaller, but it's a good size. Smaller than a jeopardy buzzer, larger then a cricket.

Its a knob!

Matt from Alexandria, VA on 8/6/2013

Crutchfield Customer Review (What's this?)

This knob turns the subwoofer volume up AND down. It's truly amazing.

Pros: Turns it up. Turns it down.

Cons: Doesn't light up with LEDs or some other totally awesome but incredibly unnecesary thing.


Hands-on research

Product Research


Wired Remote Control: The B8PT Knob Kit puts control of your subwoofer output within easy reach. The remote can be mounted using the attached double sided tape or a self-tapping screw (not included). The dimensions are:

  • Width: 1-3/16"
  • Height: 1-3/16"
  • Depth: 1-13/16" (2-1/2" including the knob and cable)

RJ-14 Connector: The remote includes a 14' RJ-14 cable which connects between the wired-remote knob and your compatible Sound Ordnance powered subwoofer.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Lost mine [ John  Apr 21, 2017 ]
Sounds like good offers [ Eduardo  Jan 26, 2017 ]
cost [ Brad  Jan 11, 2017 ]
Picked this to replace my old knob because this one has ticks to adjust more accurately. [ Nick  Nov 28, 2016 ]
This was the cheapest amp remote available so i picked it. I am not sure if it will control my JL marine amplifier or not, but it was worth a shot. [ Isaac  Sep 20, 2016 ]
I have always been a big fan of shopping, on line and I've heard a lot about this web site. [ Damion  Jul 17, 2016 ]
Lost my car in a flood. Managed to get the subs and box out unscathed, but forgot the bass knob. Now I'm ready to get my new car's system up and running. [ Britton  Jul 13, 2016 ]
For my husband [ Krystal  Jun 10, 2016 ]
Needed a universal 6 pin bass knob [ Shann  May 28, 2016 ]
To try it out, I was interested to see how well it controls my amp volume [ Chris  May 17, 2016 ]
I recently bought a car that still has a factory radio in it and this remote knob will help me control my Sound Ordnance powered sub. [ DONALD  Apr 15, 2016 ]
I needed a replacement. I have this in my Jeep Wrangler center console, I wheel it pretty hard sometimes and the last knob just stopped working. [ David  Mar 01, 2016 ]
Left my old Sound Ordnance remote wiring in a car I sold (kept the remote). Tried a standard phone cable (RJ-11) but it didn't light up OR adjust volume. Crutchfield Tech Support recommended this knob...all I needed was the cable, but for $10 this'll do. (Plus, I couldn't find a decent RJ14 cable about outdated technology.) [ R  Feb 22, 2016 ]
I am using a stock stereo in my car and needed a way to control my Sound Ordinance amp [ ALEXANDER C  Feb 14, 2016 ]
bought new truck left old one in old truck. [ MACDADDY1971  Jan 26, 2016 ]
The sub works great, needed to get a replacement cable. [ kenneth  Jan 17, 2016 ]

15 questions already asked

There is double sided tape on the back of the remote. It is very good tape and I have my mounted by my knees in my truck. [ Jeff  May 17, 2017 ]
Hi bruce. The end connection of this bass knob is the same as a phone jack. If the amp accepts a phone jack end piece, like most amps, you are in business. [ Jesse  Apr 15, 2017 ]
It unplugs. That is how I was able to use my own cord of a proper length [ Robert  Apr 15, 2017 ]
This a 6pin, not sure if it will work. [ Victor  Dec 09, 2016 ]
S.O. Knob Kit has a 4 pin connection on both ends. [ JACOB  Dec 06, 2016 ]
Didn't work for mine if you have and eq hook the lead to the remote on the amp [ David  Nov 09, 2016 ]
As long as the connection on your fosgate amp is the phone jack connection, yes it will. I only know kicker to change their connectors so it ahould work just fine. [ Jesse  Nov 08, 2016 ]
The Sound Ordnance B8PT Knob Kit is designed specifically for use with the Sound Ordnance B-8PTD powered subwoofer; and would not work properly with your Planet Audio amplifier. If you would like to discuss other options, feel free to contact an Advisor directly by phone (1-800-324-9695) or online chat. I hope that helps! [ Larry  Nov 06, 2016 ]  Staff
My not sure, it didn't work on my son's amp, I don't recall what it was. [ Victor  Nov 01, 2016 ]
This knob is made as a replacement for the knob that comes packaged with the Sound Ordnance B-8PT and B-8PTD powered subwoofer models only. I hope that helps! My Bio: [ Ryan  Nov 04, 2016 ]  Staff
No, the Sound Ordnance B8PT knob kit is made for use with the Sound Ordnance B8PT powered subwoofer models only. If you need a replacement remote for your amp, you may be able to get one from SoundStream directly. You can reach them by dialing: 323-724-4600 I hope that helps! My Bio: [ Ryan  Jul 29, 2016 ]  Staff
As long as it has the same connection it should work fine. [ JACOB  Apr 17, 2016 ]
It should as long as you have the telephone cable type input [ Amy  Apr 15, 2016 ]
No. This knob is made as a replacement for the one that comes with the Sound Ordnance B-8PTD powered subwoofer only. If you need a replacement control for your Epicenter, you can use the AudioControl ACR-1: I hope that helps! My Bio: [ Ryan  Mar 02, 2016 ]  Staff
The plug does reaemble a phone cable, not sure how many pins. [ TREVOR  Feb 22, 2016 ]
Bass [ Tyson  Feb 22, 2016 ]
4 pins. Standard phone jack. I used a 4 pin standard phone line as an extension. [ Robert  Feb 22, 2016 ]
This is for subwoffers, controls the base [ Tyson  Feb 22, 2016 ]
I forwarded your question to an Advisor and they responded with the following: The 777B8PTKNB uses a slightly different size connector (RJ14) than the M-1350 amp (RJ25). I am not showing that we have a replacement knob for the 1350 available. Call in and speak with our tech support team and we can see if we can get one for you. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Jan 20, 2015 ]  Staff
This knob will not work with the M-2250. This is because the jack that is labeled remote on the M-2250 is not functional - so no remote will work with it. Sorry I don't have better news for you there. [ Jeff  Oct 17, 2014 ]  Staff
Can I connect this to my sound ordnance m-2250? [ jesse  Aug 27, 2014 ]
I forwarded your question to an Advisor and they responded with the following: The Sound Ordnance B-8P is not compatible with a bass control knob at all. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Mar 22, 2014 ]  Staff

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