Chat
Contact us
Close contact box
Connect ID #
529 875 628 4
Connect ID #
529 875 628 4
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.

Thank you. We will be calling you .
We're sorry. We have encountered a problem.

JBL 631 Concert Series 6-1/2" 3-way car speakers

Item # 109CT631

Bring on the big fun of being there live, but leave off the big price tag — that's the idea behind JBL's...

Find what Fits your vehicle

Remove

Checking fit...

Bring on the big fun of being there live, but leave off the big price tag — that's the idea behind JBL's...

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

15 questions - 19 answers

Item # 109CT631

Other options

About the JBL 631

Alexander H.

3-way sound at a strong price

Bring on the big fun of being there live, but leave off the big price tag — that's the idea behind JBL's Concert Series car speakers. Their Concert 631 6-1/2" 3-way speakers deliver a strong sound with a striking design, accented by JBL's "exclamation point" logo on the tweeter. And the speaker's patented Plus One™ structure extends the surface area of the polypropylene woofer cone to give you a better low-frequency experience. 

3-way sound at a strong price

Bring on the big fun of being there live, but leave off the big price tag — that's the idea behind JBL's Concert Series car speakers. Their Concert 631 6-1/2" 3-way speakers deliver a strong sound with a striking design, accented by JBL's "exclamation point" logo on the tweeter. And the speaker's patented Plus One™ structure extends the surface area of the polypropylene woofer cone to give you a better low-frequency experience. 

A match for any system

These 3-ohm speakers are sensitive enough that you can power them with an aftermarket stereo, but you'll get even better results feeding them power from an outboard amp.

Grilles are not included; the factory grilles should be suitable for most applications.

READ LESS

Product highlights:

  • 6-1/2" 3-way speakers (pair)
  • polypropylene Plus One™ woofer cone with rubber surround
  • PEI dome tweeter and supertweeter
  • handles up to 45 watts RMS (135 watts peak power)
  • frequency response: 55-20,000 Hz
  • impedance: 3 ohms
  • sensitivity: 92 dB at 2.83V
  • top-mount depth: 1-15/16"
  • grilles not included
  • warranty: 1 year
  • MFR # SPKCON631FAM

What's in the box:

  • Two 3-Way speakers
  • Installation instructions
  • Template on box

See the difference between "Open Box" and "Scratch & Dent" Outlet items

Featured video:

Customer reviews for JBL 631

Loading reviews...

Average review:

4.5 out of 5 stars
166 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Customer provided image, click to load a larger version.
Customer provided image, click to load a larger version.

Sort reviews

Sort by:
Items per page:
View page:

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

Reviewed on Samsung.com

This review was collected as part of a promotion

Pros:

Cons:

Crutchfield response
Customer provided image, click to load a larger version.
<< >>

More details on the JBL 631

Pat M.

Features & specs

General
Speaker Size 6 1/2
Design 3-way
Tweeter Design Dome
Impedance (Ohms) 3
Tweeter Composition PEI
Woofer Composition Polypropylene
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 92
Frequency Response 55 - 20k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 45
Peak Power Handling (Watts) 135
Top-mount Depth (Inches) 1 15/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5 1/16
Mounting Height (Inches) 0.601
Frame Width 6.194
Frame Length 6.194

Product Research

Features

Plus One+ Woofer Cones: Each speaker uses a cone larger than other speakers of the same size. This is accomplished by using a unique basket design and hi-roll surround. The Plus One+ design offers greater bass output and an increase in efficiency.

High-Output Design: The 3Ω voice coil design compensates for the high in-line resistance of small gauge factory wiring, extracting more power from factory (or aftermarket) receivers. This results in clearer, richer sound for the listener.

Mounting: Without an adapter, these speakers fit standard 6¾" applications. Given their required cutout, they will also fit many 6½" applications without an adapter, but new screw holes must be drilled. Please enter your vehicle information to confirm fit.

Loading accessories...

Customer Q&A

15 questions already asked

Q
I have a 2017 Harley Triglide the factory speakers are 2ohm these are 3ohm they will be in the factory position tour pack pods?. Will I have any issues and how will they sound ,everything is stock on the stereo.
david  Aug 12, 2023
1 answer
A
These will sound great as they are a good replacement for factory 2-ohm speakers, Dave. These JBL 631's do not come with grilles included and you will need a speaker with a grille as you will need to use the aftermarket grille when installing. These are also not marine rated in any way and have no moisture protection, take note. If you are ok using speakers with no moisture protection, I would consider the extremely similar JBL 621 Concert series 2-ways in the link below. The JBL's have the same lower impedance and sound qualities as the models you have your eye on, but they do come with grilles included which you'll need for a successful install. I hope this helps you choose the right speakers for your ride! https://www.crutchfield.com/p_109CT621G/JBL-621.html
bo  Aug 12, 2023 (Staff)
Q
Anyone put these in a 3rd gen Tacoma in the rear doors of a double cab? Wonder why Crutchfield doesn't have them for rear doors if the stock ones are 6.5". Any one know?
chris  Jul 07, 2022
1 answer
A
There may be a very small difference in mounting depth, height, etc that would prevent those JBL from showing as being compatible but with your Tacoma. If you give us a call at 800.324.9695 to speak with an advisor we can give you the dimensions of what you are working with for your particular year.
arielle  Jul 26, 2022 (Staff)
Q
Can I put 4 of these speakers in my 2004 BMW 325i. Will it have enough power? Rear deck and fronts. Don't have harmon kardon system
jacob  May 17, 2022
1 answer
A
Due to the design of your BMW and crossovers being used to limit frequencies that are sent to speakers, more work may need to be done to make these give the sound you seek. I recommend contacting an advisor by calling 1-800-324-9695 to discuss your goals and get a personal recommendation
jason  May 22, 2022 (Staff)
Q
Will it be good size in my mazda 3 2014 hatchback ?
komonyi kevin  Jul 11, 2021
1 answer
A
This speaker can be installed into the doors of your Mazda and will work as good replacements in some systems for the right preferences. I recommend contacting an advisor by calling 1-800-324-9695 to discuss your specific Mazda 3 along with your goals to get a personal recommendation
jason  Jul 17, 2021 (Staff)
Q
If i order this will i get 2 speakers?
komonyi kevin  Jul 11, 2021
2 answers
A
Yes, it is a pair of speakers...
giovanni  Jul 14, 2021
A
Yes
tyrone  Jul 14, 2021
Q
I hook these up in my 2018 Chevy Silverado, somehow it sounds worst, or alot less bass than the stock speakers. It almost sounds like a bad hookup, i had someone do the installation for me,is it possible that the speaker outputs could be crossed or something?..just dosen't sound right
bradley  Jun 19, 2021
1 answer
A
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.
kristina  Jul 14, 2021 (Staff)
Q
Does the jbl 631 wire direct to my 07 highlander limited oem harness or is an adapter harness avaliable?
tim  Feb 28, 2021
4 answers
A
For my 2008 Silverado I had to get an adapter, I'm assuming you have stock speaker harness going to your speakers so you would need one as well, it should give you the option to add the adapters in your cart as long as you have your vehicle information up to date. The reason for the adapter is the speakers only have 2 male terminals a "negative and positive". If you had put in other speakers after the oems you could just crimp 2 female connectors to your cars wires and plug it in directly.
dominic  Feb 28, 2021
A
Adopter available
verlin  Feb 28, 2021
A
?
verlin  Feb 28, 2021
A
You will need an adapter harness. That will be the easiest way to install them
tony  Feb 28, 2021
Q
Can you get the grills for these?
paul  Sep 24, 2020
1 answer
A
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  Oct 08, 2020 (Staff)
Q
What are the electrical terminal sizes for: 1. the positive terminal 2. the negative terminal?
robert  Apr 12, 2020
2 answers
A
I'm sorry I don't know
james  Apr 23, 2020
A
One terminal is bigger than the other I think it was the positive side that was the smaller one
tyrone  Apr 22, 2020
Q
Ive put the JBL 631 Concert 6x9's in the front door of my 2018 Subaru CrossTrek Premium. Why does it say that these wont fit my car which has stock 6 1/2"'s in the back door? I'd like to keep the same JBL's (Concert series) in front and rear doors. I'm very happy with just the new 6x9's up front - cant wait to do tge rears! Thanks!
mark  Dec 30, 2019
1 answer
A
The limitation is the mounting height. The tweeters on those JBL Concert series 6 1/2" are a bit too tall and will hit the factory grill/ door panel. They are only off by less than 1/10" though so you may be able to make them fit. You can consult with one of our friendly product advisors here: https://www.crutchfield.com/I-rET1c290/S-SUliZgSTXG7/support/ContactUs.aspx
casey  Jan 10, 2020 (Staff)
SHOW MORESHOW LESS

Loading articles...

Compare the sound