4.6 (5)
Write a review


670GTi Nomex® spider - Image

Nomex® spider

The 670GTi’s spider and surround are specifically designed to ensure linear motion in both forward and rearward directions. This minimizes distortion caused by the speaker’s suspension.

670GTi Kevlar® cone - Image

Kevlar® cone

The ultra-rigid Kevlar dustcap and cone body minimize unwanted cone flexing, ensuring smooth frequency response.

670GTi Copper polepiece cap - Image

Copper polepiece cap

The 670GTi delivers crystal-clear vocals and midrange—even during heavy bass signals—thanks to its polepiece cap. The copper cap provides linear inductance over the full range of forward voice-coil travel, which reduces intermodulation distortion.

670GTi Vented Gap Cooling™ ports - Image

Vented Gap Cooling™ ports

When air gets trapped in a voice coil, it can cause distortion—and the 670GTi isn’t about to let that happen. Vents allow air to move over the voice coil, which eliminates distortion and enables superior power handling.

670GTi Voice coil - Image

Voice coil

An extra long, aluminum edge-wound voice coil provides high excursion for improved low-frequency capability. The two-inch diameter, over-hung voice coil reduces distortion at low frequencies and high input power.

670GTi Oversized tweeter voice coil - Image

Oversized tweeter voice coil

The one-inch, edge-driven textile dome tweeter employs an oversized voice coil, which increases power handling and lowers distortion at high output levels, and produces a flatter overall frequency response.

670GTi Extended-range dome tweeter - Image

Extended-range dome tweeter

The 670GTi’s tweeter plays all the way out to 30kHz, so you hear every bit of detail and nuance that your music has to offer.

670GTi Precision crossover network - Image

Precision crossover network

Technology and construction you might find in a premium home loudspeaker are right at home in the 670GTi’s crossover network. Aluminum-encased, wire-wound resistors and heavy-trace printed circuit boards greatly increase heat dissipation and power handling, maximizing the amount of amplifier power that reaches the woofer and tweeter.

Specs & Downloads

Item# 670GTI


A legend is reborn

A decade ago, JBL engineers introduced the 660GTi Component System. The premium system celebrated the company’s 60th anniversary by setting new standards for power handling, distortion reduction and sound quality in cars. Now the 670GTi brings uncompromising JBL performance to a new generation of car audio enthusiasts. Featuring the identical woofers, tweeters and crossover circuits as its predecessor, this reference-class component system delivers huge power-handling capability, flat response and unparalleled distortion elimination. It even simplifies installation by splitting the crossover into separate, one-channel boxes. The product of meticulous design, manufacturing and testing, the 670GTi represents everything JBL engineering stands for.

General Specifications

Frequency Response
50Hz – 30kHz
92 dB

Audio Specifications

Power Handling (RMS)
150 W
Power Handling (Peak)
600 W

Documents & Downloads

Reviews and Q&A

Customer Reviews

Rated 5 out of 5 by from Great product, bought them for all my friends. They loved them
Date published: 2017-05-31
Rated 5 out of 5 by from easy to operate very please with this product highly recommend this to family and friends
Date published: 2017-05-29
Rated 4 out of 5 by from works well i got it two months ago, and its been working great
Date published: 2017-05-21
Rated 4 out of 5 by from Great Amazing I loved it would totally recommend!!!!!!!!!!!
Date published: 2017-05-30
Rated 5 out of 5 by from It's awesome!! I bought this a month ago and I'm so happy I did!!
Date published: 2017-05-30
  • y_2022, m_12, d_6, h_21
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.34
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_US, sid_670gti_, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_jbl
  • bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0
  • CLOUD, getReviews, 6ms
  • reviews, product

Product Q&A

Why the 660gti have wave guides for tweeters and the jbl 670 gti do not have waveguides for tweeters?

Asked by: Infantes
The wave guides can be found on the Owner's Manual of the JBL 670GTi. If you need further assistance , Please submit a case request at https://www.jbl.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer service
Date published: 2021-06-06

What is the recommended RMS power range output from the amplifier? Will a 100W RMS output channel at 2 ohm cause the amp to clip/distort? (I am considering JBL GTR 7535)

Asked by: eliebitar
Recommended power is 150Wrms @ 4ohms. If you were to use our JBL GTR-7535 you would need to bridge it and get 200Wrms at 4ohms.
Answered by: Jem at Customer Support
Date published: 2021-06-06

I would like to know the RMS of each (Mid and tweeter) I can see 150RMS for GTI670, but need to know for each RMS.

Asked by: Pyodor
tweeter 150 RMS mid 150 RMS
Answered by: rocky
Date published: 2021-06-06

Why does this cost more than my car?

Asked by: Unknown474628
Our JBL 670GTi has many features that most other car speakers don’t. Features such as our precision crossover network in an aluminum case with wire-wound resistors and heavy-trace printed circuit boards, Kevlar cone, copper polepiece cap and many more. If you have other questions please reach out to us through this link: https://bit.ly/2K52L2x
Answered by: Rhae
Date published: 2021-06-06

Since its a 2 way system , is the full range excluding subwoofers covered? Is there a need to incorporate 3 inch mids speakers to cover the full music range along with the subwoofers?

Asked by: eliebitar
The lowest frequency that the woofer can play is 50Hz. Its Crossover Frequency is 2500Hz. Meaning it's playing full-range music.
Answered by: Jem at Customer Support
Date published: 2021-06-06

Does this kit have all the speakers needed to replace the stock or do I need to but two of these kits to change all speakers. Should be a total of 6 is that correct.? 

Asked by: TacomaTRD
Dear TacomaTRD, Thank you for your request. To equip your car with a full set of speakers, one JBL 670GTi kit is enough. Please also check the "What's in the box?" segment as well as the owner's manual on the product's page for reference: https://www.jbl.com/car-audio-systems/670GTI_.html Best, Jakob
Answered by: Jakob at Customer Service
Date published: 2021-06-06

Are these speakers Made in USA?

Asked by: JBLphile
You might find the answer to your question in our Product Support FAQ and knowledge base sections. The link is located at the top of this page. To submit a support case, please fill out the Contact Us form at the same location.
Answered by: Ren at Customer Service
Date published: 2021-06-06

how big is box with this product I mean size of this box

Asked by: Artist
It is impossible to give these dimensions as we don't know where you will be putting it. So the shape or size must be decided by you. Here's a way to calculate the sides of an enclosure. One cubic foot is 1728 cubic inches. Let's say you want to build a 6.5 cubic foot box. Convert 6.5 cubic feet to cubic inches by multiplying 6.5 times 1728, which equals 11232 cubic inches. The area of a rectangle can be calculated by the formula Length x Width x Height = Area. So, pick two sides that you would like to come close to. Lets say a height of 22 inches and a depth of 20 inches. I'll pick 24 inches as the width to start. 20 x 22 x 24 = 10560 - too small 20 x 22 x 26 = 11440 - too large 20 x 22 x 25.5 = 11220 - CLOSE ENOUGH So, your internal dimensions would be 22" High, 20" Deep and 25.5" long.
Answered by: Joe G at Customer Service
Date published: 2021-06-06
  • y_2022, m_12, d_7, h_21CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.34
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_13
  • loc_en_US, sid_670gti_, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_jbl
  • bvseo_sdk, dw_cartridge, 18.2.0, p_sdk_3.2.0
  • CLOUD, getContent, 157ms
  • questions, product


Register your JBL product

Do you own this product? Register it here in case you need to claim warranty

Register Now

Can't find what you're looking for?

Are you looking for product support, documentation, how-tos or older products?

JBL Support