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JBL 670GTi

1200 Watt Max 6-1/2" (165mm) 2-way Reference-Class Competition-Grade Car Component Speaker System

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JBL 670GTi

1200 Watt Max 6-1/2" (165mm) 2-way Reference-Class Competition-Grade Car Component Speaker System


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Car Stereo and Speaker Installation Tool Kit

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NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!



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FREE Speaker Adapters For Factory 6"x 9" Speaker Locations

Get a Free pair of Metra Speaker Adapters For Factory 6"x 9" Speaker Locations when you click the "add Both to Cart" button. This offer cannot be combined with any other coupons or offers.




JBL 670GTi



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Metra 82-6901


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Metra 82-6901

5-1/4" or 6-1/2" Speaker to 6" x 9" Mounting Hole Adapters • Mount your pair of 5-1/4" or 6-1/2" speakers in a 6" x 9" mounting hole

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General Features:

  • 6-1/2" Reference-Class Series 2-Way Component System
  • Power Handling:
    • Peak: 1200 watts per set / 600 watts each side
    • RMS: 300 watts per set / 150 watts each side
  • Recommended Power Range: 50 - 150 watts RMS per channel
  • Low Distortion Woofer
    • Spider-Landing Vents
    • Nomex® Spider
    • Nitrile-Butylene Surround
    • Copper Polepiece Cap
    • Polished and Flared Polepiece Vent
    • Neodymium Magnet
    • Vented Gap Cooling Ports
    • Flux Stabilization Ring
    • Long, over-hung 2" diameter, aluminum edge-wound voice coil
    • Vented Voice Coil Former
    • Screw-Down Terminals
    • Kevlar Dustcap and Cone Body
    • Cast-Aluminum Bask
    • Top-mount Depth: 3-1/16"
    • Cutout Dimensions: 5-1/16"
    • 4 ohms impedance
  • Extended-Range Dome Tweeter
    • One-inch edge-driven textile dome
    • Oversized voice coil
    • Capable of allowing lower crossover points
    • Superior imaging than typical tweeters
    • Capable of reaching up to ~30,000 Hz
    • Top-mount Depth: 1-5/16"
    • Cutout Dimensions: 2-3/16"
    • 4 ohms impedance
  • Precision Crossover Network
    • High-precision polypropylene capacitors
    • Air-core inductors
    • Aluminum-encased, wire-wound resistors
    • Heavy-trace printed circuit boards
    • Home audio inspired construction
    • Crossover Frequency: 2500 Hz
  • Frequency Response: 50 - 30,000 Hz
  • Sensitivity: 91 dB
  • Authorized Internet Dealer
  • 3 Year Manufacturer's Warranty

  • Priced Per Complete Component System: 2 midwoofers, 2 tweeters and 2 crossover networks.

What's In The Box?
  • 1 pair of midrange speakers
  • 1 pair of tweeters
  • 1 pair of passive crossovers
  • 1 pair of carbon fiber grilles
  • 1 foam gasket set for midranges
  • 1 pair of I-mount™ kits
  • 1 pair of spider mounts
  • 1 pair of quad mounts
  • Owner’s manual

Thiele/Small Parameters

  • BL (TM): 7.56
  • DCR (ohms): 3.48
  • MMS (g): 17.94
  • SD (cm2): 132.7
  • CMS (μm/N): 382
  • VAS (l): 9.45
  • FS (Hz): 60.8
  • QES: 0.42
  • QMS: 10.17
  • QT: 0.4
  • 1wSPL (dB0): 89
  • SPL (2.83V): 92.6
  • HVC (mm): 17.27
  • HAG (mm): 6
  • XMAX (mm): 5.36
  • VB: 288,890 mm3
  • LEVC (mHz)< 0.13
Check out the JBL 670GTi Owner's Manual

Product History:

JBL 670GTi thumbnail
(newest, current model)
JBL 660GTi thumbnail
(previous model, replaced by JBL 670GTi)

Speaker Specifications

This is the manufacturer product line of speakers.
Gti (JBL)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
2-way Component System
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Kevlar Fiber
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Nitrile Butadiene Rubber (NBR)
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
600 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
150 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
92 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
50 - 30,000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches, required to contain the speaker.
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

2 Woofers + 2 Tweeters

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
3 years
Labor Warranty Duration
3 years
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
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1 Star

Average Attribution Rating


Dixon, IL

Verified Purchase
Simply staggering!

April 24, 2016

This is my first review ever. I am so thrilled to write this review. First of all, this is my first time using JBL products and boy am I glad! I have these bad boys hooked up active to a p8004 rockford amp using my headunit dex p99rs.
The level of fidelity of these speakers cannot be matched, and they go very loud and are crystal clear.
The music is so vibrant and alive to say the least, and stays so through out full volume.

I choose JBL honestly because I am an SQL guy, these speakers far exceeded my expectations. In the past I used 2 components upfront and 2 6×9 in the back. The current setup is only a component of these upfront and it sounds much louder than my previous setup.

The speakers offer tons of technology and a properly oversized voice coil for lots of power handling. The tweeter is ruler flat all the way to 30,000 hz and is not fatiguing to listen to. The midbass driver is hungry for power and though crossed at 65 hz sounds crystal clear on high volume playing with music filled with bass.

If you are serious about sound quality and you like music to be loud look no further these components are a jewel for their price range. Well done JBL!! Keep up the amazing work.

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Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $37.85

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

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Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $18.99

NVX XTGSP2 Tone Generator and Speaker Polarity Tester

Perfect for safely troubleshooting and testing audio systems

Your Price $29.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $7.99

Encore Universal Four Door Power Door Lock Kit

Add Power Door Locking and Unlocking while you have the Door Panels removed

Your Price $29.99

NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!

Your Price $47.99

Dynamat Xtreme Door Kit 10435

Enough sound dampening to cover most doors!

Your Price $60.97

Stinger Roadkill Door Kit

Use this to eliminate rattle from your doors!

Your Price $39.95

NVX Sound Dampening Rubber Roller

Install your Sound Dampening with ease using this heavy duty rubber roller!

Your Price $7.99

Speaker Baffles for your Speakers

Enhance the sound of your speakers with these easy to install speaker baffles.

Your Price $9.99

XTC 6-1/2" Round Large Frame, Shallow Foam Speaker Baffles

Creates a tight seal behind speaker for enhanced audio quality.

Your Price $13.84

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $5.99

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $11.99

Browse 1 question
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Can I bi-amp these components like the jbl 660 gti speakers?
john s on Nov 18, 2015
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: JBL 670GTi