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JBL GTO638 + Sound Dampening

6-1/2" / 6-3/4" Grand Touring 3-way Speakers w/ Four 12" x 36" Pieces of Sound Dampening Material

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Specials with this product

  • Free Ground Shipping to the 48 statesdetails
Speaker Features:
  • 6-1/2"/6-3/4" Grand Touring Series 3-Way Car Speaker System
  • Power Handling:
    • Peak: 360 watts per set / 180 watts each side
    • RMS: 120 watts per set / 60 watts each side
  • Patent pending Plus One woofer cones
  • Mylar/titanium composite dome tweeters
  • Can be safely powered by any headunit
  • Sensitivity: 92 dB
  • 2 ohms impedance
  • Frequency response: 50-21,000 Hz
  • Top-mount depth: 2"
  • Cutout diameter: 5-1/8"
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Sound Dampening Features:
  • Four 12" x 36" 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): 12"L x 36"W

Speakers Priced Per Pair

Speaker Specifications
Speaker Size6-1/2" (also mounts in 6-3/4" w/ included brackets)
Design3-way
Tweeter DesignDome
Tweeter CompositionMylar/Titanium Hybrid
Woofer CompositionPlus One
Woofer SurroundN/A
Peak Power Handling180 watts
RMS Power Handling60 watts
Sensitivity92 dB
Frequency Response50 - 21,000 Hz
Impedance (Per Voice Coil)2 ohms
Shallow Mount InstallationYes
Top-Mount Depth2"
Bottom-Mount DepthN/A
Cutout Dimensions5-1/8"
Speaker GrillesYes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
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Speaker Wire
Upgrade your factory speaker wire to aftermarket speaker wire and hear the difference! Using thicker gauges, newer technology, and higher quality materials, aftermarket speaker wire is key to upgrading the sound in your car.
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20 ft. of 16 AWG KICKER X-Series Speaker Wire20 ft. of 16 AWG KICKER X-Series Speaker Wire
Get high quality sound from Kicker's twisted-pair, true to gauge speaker wire.		$19.99
50 ft. of 14 AWG StreetWires Speaker Cable50 ft. of 14 AWG StreetWires Speaker Cable
Streetwires Super Cable provides a zero-grip insulation for a smooth install as well as true gauge twisted wire construction.		$29.99
Sound Dampening Material
Get optimal sound from your new speakers with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
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NVX SDSK2 Speaker KitNVX SDSK2 Speaker Kit
Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!		$19.99
NVX SDRLR1 Sound Dampening Rubber RollerNVX SDRLR1 Sound Dampening Rubber Roller
Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!		$8.95
Speaker Baffles, Spacers, and Depth Extenders
Mount your speakers in the location that you need with these speaker spacers, extenders, and adapters.
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Speaker Baffles for your SpeakersSpeaker Baffles for your Speakers
Enhance the sound of your speakers with these easy to install speaker baffles.		$9.99
1/2" Depth Extender for 6-1/2" Speakers1/2" Depth Extender for 6-1/2" Speakers
Need just a little more room to install your new speakers? These 1/2" spacers are just what you are looking for.		$4.99
Installation, Tools & Accessories
Get all of the tools and accessories to install your new speakers like a professional, or take your car to an expert and have them installed by redeeming professional installation cards.
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Door Panel & Upholstery Remover ToolDoor Panel & Upholstery Remover Tool
The ideal tool for removing your car's door panels to replace you speakers!		$11.99
Universal Window Handle Remover ToolUniversal Window Handle Remover Tool
Designed to easily remove the manual window handles without breaking any interior pieces.		$4.99
Universal Wire Puller & GrabberUniversal Wire Puller & Grabber
Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!		$8.99
Tone Generators and Sound Testing Equipment
Optimize your new system's sound quality by testing and calibrating all of your components with these items.
 ProductPriceAdd?
AutoSound 2000 CD-101AutoSound 2000 CD-101
Low frequency test CD		$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.		$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.		$12.99
Main Product
 ProductPriceAdd?
JBL GTO638_CDMJBL GTO638 + Sound Dampening$169.95
Related products
JBL GTO638
6.5"/6-3/4" Grand Touring Series 3-Way Car Speaker System • 180 Watts • 60 Watts RMS • Plus One Woofer • Mylar/Titanium Composite Dome Tweeters • 2 Ohms
$129.95
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Cache CDM
Eliminates Road Noise • Quiets Vibrations • Stops Rattles • Increases SPL • Reduces Heat • Simple To Install • Easy To Form Aluminum • Four Step Peel and Stick Installation • Four 12" x 36" Pieces
$49.99
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More info

Product Summary

Manufacturer: JBL
Model number: GTO638_CDM
Weight: 16.80 lbs
Internal SKU: gto638_cdm
Internal product ID: 37666

Price Information

$239.95

–$70.00

$169.95

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Customer Testimonial

I've always done the majority of my car audio shopping with Sonic. I'm overly happy with the service from Sonic to include the customer support. Where the manufacturer of my headunit STILL hasn't returned my e-mails, my questions have been answered with laser precision from the kind people at Sonic.

- Frank G from Pyeongtaek, Gyeonggi-do, South Korea

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