Go for it

If you're in the market for new speakers, you've just found a serious contender. JBL created their GTO429 4" speakers as a hi-fi solution for those who want better sound in their vehicle.

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Go for it

If you're in the market for new speakers, you've just found a serious contender. JBL created their GTO429 4" speakers as a hi-fi solution for those who want better sound in their vehicle.

JBL innovation

You'll find JBL's unique Plus One woofer cone design at work here, which expands the diaphragm area of the cone to give you better low-frequency response. Edge-driven soft dome tweeters ensure a rich experience in the upper frequencies, defined by a bright, open quality. These JBLs also offer slightly lower impedance than standard car speakers, so they'll safely draw a little more power from your car stereo, yielding big volume even with low-powered factory radios. But if you want to blast these babies, they'll handle up to 35 watts RMS from an outboard amplifier.

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Product highlights:

4" 2-way speakers (pair)
carbon-injected Plus One™ woofer cone with butyl rubber surround
edge-driven silk balanced dome tweeter
power range: 5-35 watts RMS (105 watts peak power)
impedance: 3 ohms
frequency response: 75-21,000 Hz
sensitivity: 92 dB
top-mount depth: 1-15/16"
grilles included
warranty: 1 year
MFR # GTO429

What's in the box:

JBL GTO429 owner's manual

Two 2-way speakers
2 Grilles
2 JBL logo badges
2 Adhesive backed foam gasket strips
Eight 1-3/8" Self-tapping Allen head screws
3mm Allen head bit
8 Speed clips
Instruction manual

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Researched by Crutchfield's Pat M.

Features & specs

General
Speaker Size	4
Design	2-way
Tweeter Design	Balanced Dome
Impedance (Ohms)	3
Tweeter Composition	Silk
Woofer Composition	Carbon-injected
Woofer Surround	Butyl Rubber
Parts Warranty	1 Year
Labor Warranty	1 Year
Specifications
Sensitivity (1W at 1 meter)	N/A
Sensitivity at 2.83 volts	92
Frequency Response	75 - 21k Hz
Minimum RMS Wattage	5
Maximum RMS Wattage	35
Peak Power Handling (Watts)	105
Top-mount Depth (Inches)	1 15/16
Bottom-mount Depth (Inches)	N/A
Cutout Diameter or Length (inches)	3 11/16
Mounting Height (Inches)	0.594
Frame Width	3.95
Frame Length	3.95

Product Research

Features

Plus One Woofer Cones: The Plus One speaker cones offer more surface area than other speakers that fit in the same size opening. This is accomplished by using a new basket design and hi-roll surround. The result is greater bass output and an increase in efficiency.

Balanced Dome Tweeter: Each speaker has a balanced dome tweeter. A semi-dome tweeter has a dome placed inside a cone. Balanced dome tweeters are semi-dome tweeters with equal reproduction area given the cone and dome portions of the tweeter.

FRP Frames: The fiberglass-reinforced plastic (FRP) frames used in the GTO series speakers resist warping, even when mounted on uneven surfaces. The nonmagnetic carbon composite has no impact on the motor structure and the plastic doesn't resonate.

4/2 Hole Compatibility: Most 4" factory speakers use four mounting screws, however, in some vehicles, only two are used. The GTO-429's mounting tabs can be removed, allowing installation in 4-hole or 2-hole applications. Please check the Find What Fits Your Car application to confirm fit in your vehicle.

High-Output Design: The 3Ω voice coil design compensates for the high in-line resistance of small gauge factory wiring, extracting more power from factory (or aftermarket) receivers. This results in clearer, richer sound for the listener.

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4 questions already asked

Interested in these speakers and was curious as to what would be a good amp to complement these speakers?

demetri Oct 01, 2017

1 answer

They are so small they don't really need an amp besides what my head unit puts out (fusion ra70 - 25 watts RMS). They produce hardly any bass so I supplemented with an 8"sub. Sounds much better now.

mather Oct 02, 2017

what is the distance to each corner center to center?i need 5 1/2 inch mount speaker

richard Apr 25, 2016

1 answer

The bolt pattern on the JBL GTO429 4" speaker measures 4.65" from corner to corner, diagonally. I hope that helps. My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=159

david Apr 27, 2016 (Staff)

what is the rear depth of the gto 429 speaker i.m making a concell for my street rod and mounting them in each side of it.?

robert Oct 19, 2015

1 answer

The JBL GTO429's mounting depth when it's installed as a top-mount is 1-15/16".

david Oct 21, 2015 (Staff)

I have a pioneerpioneer DEH-X4700 reciever, minimum 4ohm speakers, 22watt RMS, 50watt max per speaker from the reciever.I have 2 6x6 rear speakers, 50watt RMS 180watt max, 4ohm. Is it safe for me to use these 3ohm speakers to replace my front speakers?

paul Jun 28, 2015

1 answer

I forwarded your question to an Advisor and they responded with the following: Yes. Those speakers will work fine with your radio. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat.

kristina Jul 01, 2015 (Staff)

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