Garage
Shop

See all parts that fit your 1987 G3500

JBL GTO8628 + Sound Dampening

6" x 8" / 5" x 7" 2-way Car Speakers with Four 10" x 10" Pieces of Sound Dampening Material

JBL
Shop all JBL
EXCLUSIVE
Product videos
highlight-star-icon

6" x 8" (also fits in 5" x 7") Grand Touring Series 2-way Car Speakers • 180 Watts Peak • 60 Watts RMS • Plus One Cone • My-Ti tweeters • 2 Ohm • Sound Dampening Material Included

Learn more about the gto8628_2-csm

We apologize

This item has been discontinued


Loading...
RVM-35V1 main

MB Quart RVM-35V1

3.5" Touchscreen Multi-Zone Digital Multimedia Receiver with Bluetooth for RV's

-10.38%

$189.99

List price $211.99

RV.R1 main

DS18 RV.R1

Multi-Zone Digital Audio Receiver with Bluetooth Audio Streaming for RV's

RVDVD3.0 main

MB Quart RVDVD3.0

Multi-Zone DVD Receiver with Bluetooth for RV's

1
-10.10%

$257.99

List price $286.99

MB Quart RVM2.0

Multi-Zone Digital Audio Receiver with Bluetooth Audio Streaming for RV's

-10.29%

$156.99

List price $174.99

RVM-10V1 main

MB Quart RVM-10V1

10" Touchscreen Multi-Zone Digital Multimedia Receiver with Bluetooth for RV's

-9.09%

$250.00

List price $275.00

Product Highlights


6" x 8" (also fits in 5" x 7") Grand Touring Series 2-way Car Speakers • 180 Watts Peak • 60 Watts RMS • Plus One Cone • My-Ti tweeters • 2 Ohm • Sound Dampening Material Included

Description


JBL brand icon

Authorized dealer

Speaker Features:
  • 6" x 8" (also fits in 5" x 7") Grand Touring Series 2-way Car Speakers
  • Power Handling:
    • Peak: 360 watts per pair / 180 watts each
    • RMS: 120 watts per pair / 60 watts each
  • Plus One cone material
  • Mylar/titanium composite dome tweeters
  • Frequency response: 50-21,000 Hz
  • 2 ohm impedance
  • Sensitivity: 92dB
  • Cutout dimensions: 4-9/16" x 7-3/16"
  • Top-mount depth: 2-1/4"
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Sound Dampening Features:
  • Four 10" x 10" Pieces of Dead Shield Sound Dampening Material
  • Eliminates Road Noise
  • Quiets Vibrations
  • Stops Rattles
  • Increases SPL
  • Reduces Heat
  • Simple To Install
  • Easy To Form Aluminum
  • Four step peel and stick installation
  • Increases sound quality and output
  • Up to 30% thicker than the leading competitors
  • Dimensions (each piece): 10"L x 10"W

Speakers Priced Per Pair


Best selling similar products

JS68K small

Jensen JS68K

• 250 watts Peak Each, 60 watts RMS Each
• 1-3/16" PEI (Polyetherimide) Dome tweeters
• 2-1/4" PEI (Polyetherimide) Dome midranges
• Woven Aramid Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

$139.99

List price $139.99

C1-570x small

JL Audio C1-570x

• 50 watts RMS Each
• 3/4" Silk-Suspended Aluminum Edge Driven Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

(4)

$129.99

List price $129.99

V68 small

Cerwin-Vega V68

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Balanced Dome Tweeters
• Carbon Fiber Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

$139.99

List price $139.99

VTEK-57Xi small

Earthquake Sound VTEK-57Xi

• 400 watts RMS Each
• 3/4" Silk Dome swiveling tweeters
• Glass Fiber cone material
• Impedance: 2 ohm
• Sensitivity: 90 dB

$129.99

List price $169.00

PK1-168 small

MB Quart PK1-168

• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome tweeters
• Tunable waveguide tweeter housing
• Pop Paper-Mica Blend cone material
• Curvilinear cone design geometry
• Impedance: 4 ohm
• Sensitivity: 88.5 dB

$129.99

List price $189.99

P1683 small

Rockford Fosgate Punch P1 P1683

• 130 watts Peak Each, 65 watts RMS Each
• 3/4" tweeter and 1/2" super tweeter PEI (Polyetherimide) Dome tweeters
• Injection-molded Mineral-filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

(85)

$109.99

List price $109.99

NSP68 small

NVX NSP68

• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.63"

(59)

$79.99

List price $95.99

VSP68 small

NVX VSP68

• 300 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.59"

(46)

$99.99

List price $119.99

46CSC684 small

Kicker CSC68 (46CSC684)

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material with EVC™ (Extended Voice Coil) technology
• Impedance: 4 ohm
• Sensitivity: 90 dB

(11)

$79.96

List price $119.99

46CSS684 small

Kicker CSS68 (46CSS684)

• 225 watts Peak Each, 75 watts RMS Each
• 3/4" Titanium Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

(8)

$143.96

List price $199.99

Specifications & Details


Speaker Specifications
Speaker Size
6" x 8" (also mounts in most 5" x 7" locations)
Design
2-way Coaxial
Tweeter Design
Dome
Tweeter Composition
Mylar/Titanium Hybrid
Woofer Composition
Plus One
Peak Power Handling
180 watts
RMS Power Handling
60 watts
Sensitivity
92 dB
Frequency Response
50 - 21,000 Hz
Impedance (Per Voice Coil)
2 ohm
Top-Mount Depth (Mounting Depth)
2-1/4"
Cutout Dimensions
4-9/16" x 7-3/16" 
General specifications
Speaker Grilles
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

JBL

Model Number:

GTO8628_2-CSM

Weight:

9.46lbs

Internal SKU:

gto8628_2-csm

Internal Product ID:

37669

Product and How-to Videos


Customer Ratings & Reviews


JBL GTO8628 + Sound Dampening thumbnail image

5 star
76%
4 star
18%
3 star
6%
2 star
0%
1 star
0%



Durability
4.8
Value
4.9
Features
4.7
Design
4.8
Usability
4.9

Customer Reviews

Sort by:

Loading...

review

The following review is for GTO8628, which is a part of the bundle you are viewing.

The clearness of the voice in very good the bass is ok. Theses speakers are not really made for bass. Also, due to high bass the tweeter which is located on top of the cone, gets hit and makes a very nasty noise!!! I'm running a 4-channel amp with these speakers.

By arm on January 2, 2015

47 found this helpful


AWESOME HIGHS!

The following review is for GTO8628, which is a part of the bundle you are viewing.

These speakers have the best tweeters of any speaker I have ever bought and I have had kicker, alpine, polk, RF, clarion, pioneer, and more. Such a clear crisp high it gave me goose bumps the first time a turned them up. I have a subwoofer so It doesn't rally mater to me but Bass is ok, About the same as my stock ford speakers but a little clearer. Fit right into my f250 door holes and the stock screw holes lined up to. After I listened to the pair I bought for the front I ordered two more for the back very happy.

By bubblez on November 4, 2014

46 found this helpful


Good mids; limited bass

The following review is for GTO8628, which is a part of the bundle you are viewing.

Sound quality is good, but i was expecting more in the bass department. Important to note that i am not running an amp with these speakers.

By Dickybird on September 5, 2011

44 found this helpful


Great

The following review is for GTO8628, which is a part of the bundle you are viewing.

Great product exactly as described, the sound great!
Thanks a lot!

By Cory on May 15, 2014

43 found this helpful


Big sound for a small speaker

The following review is for GTO8628, which is a part of the bundle you are viewing.

Listed as a 6 x 8 speakers, but they truly are a 5 x 7 that fits original mounts. These speakers provide great bass response, the built in cross-overs and the adjustable tweeters make directing your sound correctly a breeze. I use a aftermarket Alpine with a 45 watt amp with Infinity 5 x 7 front and these GTO-8628 in the rear. Sonic's price made these speakers a no brainer.

By David on October 19, 2010

42 found this helpful


entry level

The following review is for GTO8628, which is a part of the bundle you are viewing.

for the price i couldnt beat it. decent bass responsce, mids were alittle muddy at high volumes, as with highs. a good head unit and amp should fix that hopefully. overall im happy with them, but i would get the 4 0r 5 way pioneers if i had to order again. id say middle of the road and price point for most, not awsome, deffinatly not bad. wayy better than stock :)

By B on October 13, 2010

40 found this helpful


Great Speakers

The following review is for GTO8628, which is a part of the bundle you are viewing.

I have always liked JBL speakers since I built a home stereo years ago in the 80s. Great speaker for the car. Everyone that has heard my system likes there sound.

By Alan on November 10, 2012

39 found this helpful


VERY accurate speakers for the price

The following review is for GTO8628, which is a part of the bundle you are viewing.

these are very accurate speakers (as mentioned above)...
Woofer Review:
the bass response is tight...no distortion to speak of...at full volume with the bass i get punchy, tight sounds that really give the music more of home stereo feel (which is what i want)...the vocals are very strong and don't get distorted at high levels...

Tweeter Review:
The way that the tweeters are designed is very practical...on normal setups it seems that the crispy highs get driven right into my shins...to the point of not really noticing them..with these GTOs you can adjust the angle of the tweeter so that the sounds can be driven upwards towards the driver so the highs don't get lost in the bass....and the tweeters are really sweat...again no fuzz or distortion just crispy highs...

i have a amp on order for them, but really off of the head unit they are A1 components....I HIGHLY recommend these to budget shoppers and audiophiles alike...

By smokey on April 27, 2010

38 found this helpful


Good Performance

The following review is for GTO8628, which is a part of the bundle you are viewing.

Having had older model JBL GTO's, these have similar voicing.... good bottom end with deep kick, neutral midrange, but the poly/ titanium tweeters need taming a bit. This was without attenuating the tweeters via the switch so that's still an option. I left it as is since they were installed in the upper doors off-axis (Ford Mountaineer) and just pivoted the tweeter angles to point more towards the dome light. The upper frequencies on the EQ were gently sloped down until they sounded more natural. The bottom end was cut off using a hpf of 100hz @ -12db. They can handle going a bit lower to fullrange, but sound cleaner with that particular xover point while still having more than enough upper bass to blend with a small sub.

Powered by a 65x4 US Acoustic amp, they handle power well and don't reach breakup until the deck is turned up to max at which that point, they're LOUD! Mated with an Infinity 860W bridged on the same amp's rear, this was a great match. The overall sound is very good for a deck with limited EQ & Xover, no time alignment.

These are more than worth the purchase if you're on a tight budget. The adjustability is about as close as you can get to having a component set.

By Denis on December 27, 2014

39 found this helpful


Very nice and delicious

The following review is for GTO8628, which is a part of the bundle you are viewing.

I make purchase on these speakers. They are a very nice!! I like

By Borat on September 23, 2014

39 found this helpful




No picture

Infinity BassLink SM2 (SUBBLSM2AM) (Like New (Open Box))

125W RMS 8" BassLink Series Amplified Car Subwoofer with Bass Remote

(1)

$297.46

List price $399.95

NSV612D1_X2_XCA3K small

Sundown Audio SW-NSV612D1 + NVX XCA6K

1 pair of 7000W Peak (3000W RMS) 12" NS Series Dual 1-ohm Subwoofer with Class-D Monoblock Amplifier with LED Remote Bass Knob (Strapable and Linkable)

(2)

$2859.97

List price $3551.97

15108-2 small

FanMat Duke License Plate Inlaid

Duke License Plate Inlaid

$22.99

List price $39.99

No picture

Hertz CPK 690 (Open Box, Great)

720W Peak (240W RMS) 6x9" Cento Series 2-way 4-ohm Component Car Speakers

(1)

$499.99

List price $600.00

JettaBoom small

The JettaBoom Package

Rockford Fosgate PBR300X4 + PBR500X1 Amps w/ 2 Kicker 6.5" CS Component Sets & 2 12" CompVR Subs + Enclosure

(82)

$879.85

List price $1539.73

50.5CS small

Infinity Kappa 50.5 CS 5-1/4" Component System

$159.99

List price $279.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1987 GMC G3500

2003 Audi RS6

2001 Buick Regal

2011 Chevrolet Traverse

2019 Audi Q7

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.