210-Watt, 6-1/2" Two-Way Component System

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Item# GTO608C

General Specifications

Size 6-1/2
Type Two-Way
Series Grand Touring

Audio Specifications

Frequency Response 50Hz–21kHz
Power Handling (RMS) 70W
Power Handling (Peak) 210W
Sensitivity (2.83V@1m) 92dB
Nominal Impedance 2 ohms

Speaker Specifications

Low-Frequency Transducer PlusOne® HCL™ honeycomb-laiminate cone
Controls/Adjustments HF cut
Crossover Frequencies Outboard
High-Frequency Transducer 25mm (1") edge-driven My-Ti™ dome, pivoting


Mounting Depth Woofer (in) 2-1/16
External Diameter Woofer (mm) 159
External Diameter Woofer (in) 6-1/4
Mounting Cutout Diameter Woofer (mm) 133
External Diameter Tweeter (in) 2
Mounting Depth Woofer (mm) 52
Mounting Cutout Diameter Woofer (in) 5-1/4
Mounting Cutout Diameter Tweeter (mm) 47
Mounting Cutout Diameter Tweeter (in) 1-7/8
External Diameter Tweeter (mm) 51
Mounting Depth Tweeter (in) 11/16
Mounting Depth Tweeter (mm) 17
  • (2) GTO608C Midwoofers
  • (2) Tweeter brackets
  • (2) Caps screws for tweeter brackets
  • (2) Additional alternate tweeter encasements
  • (2) Additional alternate tweeter brackets
  • (2) Additional alternante bracket cap
  • (1) Owner's Manual
  • (2) Grilles, (2) mounting bracket for woofers, (2) buffer pieces for grille/mounting bracket
  • (2) Crossover units
  • (12) Screw clips
  • (2) Tweeters
  • (8) Small clip screws, (2) long clip screws
  • (34) Screws
  • (4) Sets of speaker wire
  • (2) Tweeter encasements

Manuals & Downloads

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1 Year Warranty

Note: the Warranty Card provided with your JBL product contains the full terms and conditions of your warranty.

Unless a different warranty period is stated in the Warranty Card provided with your JBL product, JBL warrants for a period of 1 year (5 years for any non-powered speakers) from the date of retail purchase by the original end-use purchaser, that this product, when delivered to you in new condition, in original packaging, from a JBL authorized reseller and used in normal conditions, is free from any defects in manufacturing, materials and workmanship. Refer to the Warranty Card provided with your JBL product for specific details including what is not covered along with other terms and conditions.

Call us: 1.800.336.4525

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GTO608C is rated 3.0 out of 5 by 2.
Rated 4 out of 5 by from Clean + low distortion I've had these in my car for 6 months now. They sound super clean and crisp. there's no need for the tweeter boost on the cross over. The only thing I don't like is the lack of lower mid range. I think that's due to my doors design though,, not the speaker.
Date published: 2014-07-03
Rated 2 out of 5 by from Mediocre These components are about average and definitely leave a lot to be desired. Fs = 83Hz, no inductor in the crossover, almost too crisp highs. No low end bass, the factory speakers deliver better here. They do have punchy midbass which is an interesting combination with the stock front speakers. The ease of install is excellent as everything you need is included, but overall sound quality is just so-so. For the price $$ they are alright, but no way I would pay $$$ for them.
Date published: 2013-05-14
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do you have to install this in pairs or only which is blown out?

Asked by: Francisco
Please do not listen to Randy! Unless you are replacing the exact same speaker, you need to replace both, especially if you are replacing factory speakers. It will sound horrible with two different speakers for many reasons.
Answered by: tony351
Date published: 2017-12-02

are these the best to remedy my 2007 Toyota Sequoia's front door speakers that are producing a rattling sound?  Would I need the whole system, or just two 6-1/2 inch speakers?

Asked by: ron reuss
Thank you for your question on the door speaker, looking at your car speaker guide you can opt out the tweeter and the crossover and just install the 6 1/2 speakers, for cost saving you can look at our GX 6 1/2 series and just get the speaker not the entire set
Answered by: Randy at JBL
Date published: 2017-12-02

Hello, What is the woofer surround made from on the GTO608C and the other GTO series speakers?  Foam? Rubber? Cloth? Thanks, Ryan

Asked by: rcg13
Answered by: tellme
Date published: 2017-12-02
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