JBL GX9638 Complete Speaker Replacement Kit - Customer Ratings & Reviews

Awesome product

I just installed 4 of these powered by a Hifonics x400.4. These speakers sound awesome, they brought tears to my eyes! and they take almost all the power the amp can give! I am extremely happy with these. The screws they give you require a 3mm allen head and I didnt see one. I got two speakers installed before I realized they give you a 3mm bit for a screwdriver!

Door Speakers - Great Value

I bought these for my step son for a Christmas gift and he really loves them. The quality is great the shipping was fast and the speakers were perfect just what he wanted. Also to mention the prices were awesome...

Don't fit

I ordered these speakers for a 2005 tundra which according to your guide were the correct replacements for factory system. The mounting brackets don't fit. I had to order a after market bracket from you and when I get it I'll let you know if it works.

Perfect

Brought these for replacements for the factory speakers in my Jeep rear doors, and their perfect. Sound very good.

By Victor on September 30, 2020 Verified purchase

Worked Perfect!

I have a 2017 Silverado 1500 LT w/out Bose and wanted a simple and easy way to connect to the factory speaker wiring harness. Simply plug-in and hook up to aftermarket coax speakers. These are awesome for the meantime before I amplify the speakers

NOTE: THESE WILL NOT WORK FOR THE DASH SPEAKERS!!!

Also, if you want to run oversized dash speakers (OEM 2-1/2") you can fit a 3-1/2" speaker if your home out the plastic w/ a Dremel.

By Sean on April 7, 2020 Verified purchase

perfect

they fit perfect what else can u say just what I needed

Good product

I bought this product and it arrived within a few days. when installing into my 07 cobalt. I noticed the mounting screws were too long. I took a grinder to the screws. Now fits perfect and have had no problems with it. Would recommend to others.

Perfect

These worked perfectly in my 2007 Impala front doors. Upgraded to Polk Audio 6.5. The mount fit perfectly, the adapter ring for the speaker fit perfectly. Peeled off the mounting insulation from the oem mount. Transferred to the new mount. one screw mounting to the car.

By Charles on May 3, 2015 Verified purchase

Fits nicely

Purchased this for my 2017 Silverado. Unplugged the factory wiring and connected this piggy back and connected aftermarket speakers.

2017 Colorado Speaker swap

These work great. Plugs right into factory wiring, no cutting and splicing to install new speakers.

Good sound

Good for a sedan . Clear sound all around. Definitely would recommend this

By Christian on November 21, 2015 Verified purchase

Good fit.

These adapter fit perfectly in my 2010 Escalade for the front and rear locations. No modification or trimming was necessary. Does what it's supposed to do.

By Carlos on April 7, 2015 Verified purchase

ZERO Regrets!

I used it in a 1988 Mercedes Benz 420SEL. I took the chance and paid off. The speakers gives me enough bass I need. Am running it without amp and with an Alpine head unit. They are for the back they come with two brackets and used the plastic one and merged with the factory one, done deal. They sound good.

By Kakonegro on September 10, 2020 Verified purchase

JBL GTO629

i have these just on head unit power but they still sound great with no distortion.

compared to my more expensive focal these have pretty similar bass/mid bass but the vocals are definitely the weak point on these when compared to a more expensive speaker.

compared to a similar priced sony 3 way speaker these are better imo. a lot more bass and no complaints on either for the midrange or highs but neither shined

id recommend these for the price but these arent going to blow you away or anything. but i expected that and these fit the need i wanted.

By Anonymous on June 7, 2018 Verified purchase

Good

I purchase these on sale for %50 off. Good value for these speakers. Over all good sounding speakers, better than factory speakers in my Trailblazer. But if they not for the sale price, I would have been very disappoint in them.

By Tony on February 2, 2018 Verified purchase

Very easy to install!

Comes with big and little connectors for the speaker side, idiot proof. Tight connections on both leads and harness adapter. 2016 GMC sierra

By Harley on June 22, 2023 Verified purchase

Metra 72-4572

Yeah, they were great but real good no problem will buy them again.

By Henry on April 3, 2020 Verified purchase

Great sound

Great speaker for factory radio, perfect fit for low wattage.would recommend these speakers to anyone who wanted to replace factory speakers.

ok value

can't take much power before the distortion kicks in, pay more for better power handling.

Perfect fit

Exact what the product is. Great price for the brand

By Johnny on August 29, 2020 Verified purchase

just what I needed

Perfect fit in a 2012 3500hd. very easy to install. works best with 6.5"

Excellent plug n play

Worked great for my 2016 Colorado, simple plug and play, highly recommend this product if your planning on adding new aftermarket speakers

By Technics323 on August 23, 2022 Verified purchase

I was blown away

I had originally ordered a set of Kicker 6.5 speakers. When they went to pack the order they called an said the Kickers were not available. Would I like a substitute? I asked the rep what he would recommend? He recommended the JBL GTO629. I have nothing to compare them too but it would be hard to imagine that something else would be a better sounding speaker. Thumbs up! Thanks for the recommendation.

By Ed on February 2, 2018 Verified purchase

Excellent Sound

Better than expected very crisp and clear mid bass is excellent lightweight great basket construction. Very good price.

By Anonymous on April 7, 2019 Verified purchase

Jbl gto629

I purchased the speaker to go in a single 10 box for my ram and I think it sounds great and I have it wired at 2 ohms but you can also wore it at 8 ohm . I don't have any cons as of yet but it seemed to be the closest match to a small space box and the power handling matches well with my Amp

By Shane on November 4, 2016 Verified purchase

Quick and easy to install!

Great quality material. 2016 GMC Sierra, Bolted right up to factory mounts, and has added holes on the bottom side for additional support. (Will need to drill door) advise adding weather stripping to the back side for additional vibration protection as factory speakers had glue.

By Harley on June 22, 2023 Verified purchase

Speaker mounts

The installer said these worked perfect going from 5 1/4 to to 6-6.5 inch. They did not work to replace a 6x9 speaker.

By CHUCK on August 8, 2015 Verified purchase

great value

worked awesome would by again thanks for the help sonic electronix

10/10

These are hands down the best speakers I've ever owned! I have the JBL p660c components up front & now I want to replace them the GTOs are so much better! These are crazy, crazy loud on my MBquart Ra 480.4 I recommend this to anybody, so loud, & sooo very clear!

By jesse on January 9, 2017 Verified purchase

Jbl gto 629

Added these 6.5 coaxial to fronts amplified nice wide frequency range also 3 ohms so you add a. Separate tweeter there rated at 93 spl most 6.5 are 87 spl or lower risk is good remembering JBL made best house speakers at one time they have been making a long time

By Big pat on June 13, 2021 Verified purchase

JBL GTO629

Very good speakers good sound and great quality I would recommend for anyone without after market stereos

Great Speakers

JBL are some of finest audio speakers made. These are know exception. I purchased 4 that are installed in my 2022 Hyundai Elantra Limited. I replaced the entire Xfinity premium system that came with the car. Excellent sound quality. I’m an ex musician and JBL makes superior amplification for the music industry. You will not be disappointed with the purchase.

By Barry on April 8, 2022 Verified purchase

Jbl got 629 6.5 speakers

I just purchased these speakers and I’m so glad I did they sound amazing good bass and clear definitely recommend this product

metar

very easy to use and extremely easy to install took lessbthan 5 minutes

Great Value

Good Stuff. You guys advertise this to anyone with 2014 or higher GM Truck

Decent speakers

Decent speakers. Sound good as a door replacement for my Altima. Good for mids and highs. The bracket that came with it did not exactly line up to mounting holes so had to improvise but still managed to get installed

By Joshua on March 2, 2023 Verified purchase

Jbl got 629 6.5 speakers

I just purchased these speakers and I’m so glad I did they sound amazing good bass and clear definitely recommend this product

Do not recommend

Bought a pair of these and installed them in my 2017 Nissan Sentra to upgrade the factory speakers. Kept the stock head unit. Was going well the first 15 minutes, but right when the left one broke in and sounded great, the right one blew the tweeter. Had to go to local audio store and spend another $170 for some 6ohm, 225 watt DB Drives speakers. So much better!

By David on March 20, 2021 Verified purchase

Requires some modification

The brackets fit into the factory door panel perfectly. However, when I installed the 6.5" speaker, the bracket had some plastic that needed to be cut/grinded off. If you are going to install 6" speakers it won't require any modification. 6.5" or 6.75" will require minimal modification.

By Marcus on January 19, 2021 Verified purchase

fit good

Great fit looks great.

By brian on November 4, 2023 Verified purchase

Great

Great value! Sound great even on the factory deck. Can’t wait to add an amp. It will definitely wake them up!

By chris on December 16, 2022 Verified purchase

metra

perfect fit in my app fit just like factory speakers

By Rodney on January 7, 2017 Verified purchase

adapters

good job fast ship fast ship good job , to much detail in leaving simple review

Good product

These adapters did work but did not fit a Memphis speaker well. They will work but the fitment is sloppy. Not sure how they would fit other speakers such as Kenwood, kicker, etc. Overall good product

Great Speakers.

Loved everything about these speakers. The adjustable tweeter is perfect. Very loud and lots of bass. Feels like i have a mini subwoofer in car. If you want to get the most out of them wire to amp.

By Juan on November 11, 2023 Verified purchase

Great speaker at an even better price point!

I ordered these speakers to run off my factory 2019 F250 radio after one of my back door speakers blew. After lots of looking around these where the chosen ones and they do not disappoint. Sonic electronix had them for the best price I could find. Off a factory radio they sound much better than factory speakers.

By Brandon on February 20, 2024 Verified purchase

Sounds and looks great but DOES NOT FIT!

So im pretty pissed, i had to hack 2 doors up to get these 6.5s to fit EVEN though sonicelectronix.com specifically said it would fit like a glove with NO additional parts (other than wire harness) brackets wernt even big enough to cover the speaker hole, so you either have half inch gap on either side.
These jbl gtos sound great outside the doors they look great as well much more beffy than the paper speakers kia supplies.

By Wayne on February 1, 2024 Verified purchase

Perfect fit

These fit perfectly. Took all of 5 minutes.

Con: you either need a #10 screw or bolt with nut for mounting 6x9. The mounting holes are larger than normal

By Anthony on October 30, 2024 Verified purchase

Crisp quality highs with rich sound

I just installed these in the front doors with GX-628 in the rear doors, and an amplifier/subwoofer behind the rear seat in our 2023 f150. The sound is awesome, and the only negative thing is that the software in the Ford stereos is limited to adjusting ranges between the regular highs, mids, and lows. Regardless, these speakers are tremendously richer in sound and clarity. You won't regret this purchase!!

Good factory harness for gm

These are a must have you won't have to cut any wires just plug and play and your all good nice to have and saves time and saves factory warranty thanks sonic electronix you are the best

By Patrick on September 14, 2025 Verified purchase

Harness had male terminals. Needed female terminals to plug into factory connector. Also had to cut screw length. And speaker to adapter screw holes did not line up.

By jorge on May 25, 2025 Verified purchase

JBL gx9638

Great sounding speakers .great value. Works great with factory radio.

By Robert on February 23, 2025 Verified purchase

Amazing speakers and great price for my camry

By Xavier on January 27, 2025 Verified purchase

Great Product

Simple Plug and Play. It made my Job east!!

By Marketris on October 16, 2024 Verified purchase

Work great

Perfect plug and play for the 14 sierra! No mess of splicing

By Taylor on June 16, 2024 Verified purchase

They are loud

Purchased these as a direct factory replacement they sound good they are loud I am just running the stock radio and they are a great replacement but you can tell they need more power.. If ur looking for bass these are not the answer.. good clear sound..

By Wayne on October 14, 2025 Verified purchase

What a differnece

I just got a 2023 F150 XLT supercab. The sound was better the most, but better is not me, I want a clear league above. I want to hear all instruments clearly not just thr beat of music. These blew me away. The sound is super clear, I was on the fense but these speakers were well worth it. If you are looking at these dont think twice, you won't be disappointed.

By Mark on September 21, 2025 Verified purchase

Surprised by JBL GTO 6.5"

I have 2 pairs of these getting 100 watts each and they are incredibly loud. I can't turn up the volume more than halfway because it makes my ears hurt.

By Rafael on August 27, 2025 Verified purchase

wiring harness

Fit perfect. Great item for not having to cut factory wires.

By Aaron on June 13, 2025 Verified purchase

2017 Cruze Ls, fit great no problems saves alot of time

By kurtis on March 26, 2025 Verified purchase

Perfect for factory wiring

As easy as plug and play

By Anthony on October 30, 2024 Verified purchase

Great Product

My install was super clean with this product. Sorry No Pics, I forgot

By Marketris on October 16, 2024 Verified purchase

Amazing sound quality

These speakers sound amazing through all the ranges. I am extremely impressed with them! Speaker came with extra mounting options which was a nice feature as well.

By Brandon on June 18, 2024 Verified purchase