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JBL GT5-12

275W 12" GT Series Single 4 ohm Subwoofer

JBL
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• 1100W Peak
• 275W RMS
• Polypropylene cone woofer
• Rubber surround
• Rubber coated tinsel leads
• Vented motor structure
• Single 4 ohm voice coil
• Dual-stacked, oversized magnets

Learn more about the gt512

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

s21224 thumbnail

JBL S2-1224 **Toggle between 2-Ohm & 4-Ohm Impedance!**

OUR PRICE: $109.95

View item

Product Highlights


• 1100W Peak
• 275W RMS
• Polypropylene cone woofer
• Rubber surround
• Rubber coated tinsel leads
• Vented motor structure
• Single 4 ohm voice coil
• Dual-stacked, oversized magnets

Description


JBL brand icon

Authorized dealer

Big Bass

For anyone who likes to crank it up in the car, the new JBL 12" high-output GT5-12 subwoofer is the real deal. The JBL GT5-12 subwoofer features a single 4-ohm voice coil and a vented motor structure, and offers 1100 watts of peak power handling. The GT5-12 also features JBL’s newest design, combining classic elements with modern ones.

All-New Design

The GT5-12 follows the design of the more-expensive JBL subwoofers, combining classic elements with modern ones.


Significant Power Handling Capabilities

The GT5-12 handles 275W/1100W (RMS/Peak) power and offers nearly 20 percent higher Xmax than many competitors.


Increased Reliability

With its fully vented motor structure and rubber-coated tinsel leads, the GT5-12 is able to withstand even the most intense bass assault.


Dual-Stacked, Oversized Magnets

Unlike competing entry-level subwoofers, the GT5-12 is based on a solid motor structure featuring two large magnets covered by the classic JBL rubber ring.




The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.


General Features:

  • 12" GT Series Subwoofer
  • Power Handling:
    • Peak: 1100 watts
    • RMS: 275 watts
  • Recommended power range: 100 - 275 watts RMS
  • Impedance: Single 4 ohm
  • Polypropylene cone woofer
  • Rubber surround
  • Rubber coated tinsel leads
  • Vented motor structure
  • Single 4 ohm voice coil
  • Dual-stacked, oversized magnets
  • Frequency response: 27-450 Hz
  • Sensitivity: 90 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Tips for Installing the your subwoofer


Product history:

JBL S2-1224 thumbnail
(newest, current model)
JBL GT5-12 thumbnail
(previous model, replaced by JBL S2-1224 **Toggle between 2-Ohm & 4-Ohm Impedance!**)
JBL GT4-12 thumbnail
(previous model, replaced by JBL GT5-12)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 JBL GT5-12 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 JBL GT5-12 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 JBL GT5-12 Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 JBL GT5-12 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
GT5 Series
Subwoofer Size
12"
Peak Power Handling
1100 watts
RMS Power Handling
275 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohms
Voice Coil Diameter
2"
Frequency Response
27 - 450 Hz
Sensitivity
90 dB
Xmax (millimeters)
14.2 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Silver
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Magnet Structure
Double Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
1.0 cubic feet
Optimum Ported Box Volume
1.75 cubic feet
Top-Mount Depth (Mounting Depth)
6-7/16"
Cutout Diameter
11-1/4"
Shallow Mount Installation
No
Electromechanical Parameters
Free-Air Resonance (Fs)
29 Hz
Equivalent Compliance (Vas)
54.2 liters
Total Speaker Q Value (Qts)
0.58
Electrical Q Value (Qes)
0.64
Electrical Resistance of Voice Coil (Re)
4.00 ohms
Mechanical Q Value (Qms)
6.39
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

JBL

Model Number:

GT5-12

Weight:

16.00lbs

Internal SKU:

gt512

Internal Product ID:

10580

Product and How-to Videos


  • Harman International: The Pursuit of Great Sound
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?
  • How to Install a Car Subwoofer in a Box

Customer Ratings & Reviews



5 star
81%
4 star
10%
3 star
10%
2 star
0%
1 star
0%



Durability
4.6
Value
4.9
Features
4.5
Design
4.8
Usability
4.9

Customer Reviews

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Awesome sound and underrated RMS power handling.

these subwoofers really really kick out the tunes. the powerhandling is way underrated and the can definitly handle more power than they say. i currently have them wired for 2 ohms and 1000 watts RMS between 2 of these and now my rear view mirror looks down when i crank the volume. these subs really get the job done and sound clean and undistorted the whole way through. also, they produce low notes beyond the rated 27Hertz.

By matthew on August 8, 2009

49

found this helpful.

Great buy!

This is a fantastic buy. Amazing for the price.

By alex on August 10, 2010

48

found this helpful.

great buy

Bought 2 of these a few a days ago. Awesome subs. Great sound quality and they hit!! I have them in a sealled box. in a 99 eclipse. and the make my rear view mirror fall till it faces down. I can't wait to get a 600rms amp and really push these things. I would def recomend these subs. especially it your on a budget.

By jess on May 18, 2011

48

found this helpful.

Bass On A Budget

I recommend this sub for anybody who just want to shake the inside of they car with a budget.Hook it up to a 300w RMS Mono and a custom vented box and your done and please don't dream of shaking your neighbors windows. But anyway good value from JBL.

By Max on March 13, 2011

45

found this helpful.

WoW!

These subs are awesome for the value. Can't get any better than this! I love Sonic Electronix!

By Sean on January 28, 2009

45

found this helpful.

Personal Experience Says This Is One Excellent value

Hi, everyone, welcome to this review. Let me start this off with just telling a little bit about myself and my audio background. Being an Electrical Engineer, efficient and well-thought out design is key to any and all products which I consume. I've gone through the all the stereo in a boxes and decided to step things up and design a home system from the ground up each component carefully hand picked on a budget of $500 for the whole system.
The system: This 12" rated subwoofer driver was chosen to go into my hand built 3/4" MDF ported 2.05 cubic foot enclosure (not including port or driver displacement). It is driven by an MB Quart Discus 4-channel A/B amplifier with channels 3 & 4 bridged, feeding 320 watts of rated power. The amp feeds off a 400 watt continuous rated DC power supply. Though I rarely take advantage of all the available power.
Performance: While I only have personal experience with a few budget subwoofer drivers, I am a musician with a keen ear for sound nuances (I'm also somewhat of a bass fiend). I own earbuds and headphones that produce very flat sub bass curves, easily down to 20 hz, these can outdo any 12" subwoofer driver in below 35 hz sub bass, So I know what to look for. After more than 100 hours of listening with every possible musical genre, I can say that this performs as well as expectations. My main focus in a sub driver was to have very accurate and LOW frequency reproduction. Now, anyone with experience in these matters knows that ratings don't necessarily line up with reality. (Notice there is no threshold mentioned [such as +/- 3 dB]... vague ratings are hard to get an accurate idea of actual performance. However other reviews around the internet, along with the a look at the manufacturer supplied frequency response graphs, seemed to also give me the impression that this driver stands above the rest in low frequencies. Now, it all depends on the acoustic environment obviously. A car is much friendlier to low frequency reproduction than a big room, hence the reason for choosing this driver. Using my own tests with test tones and the sub placed optimally for the listening vantage point to be squarely in an anti-node for very low sub-bass frequencies (below 40 hz), I came up with, to my ear, about 33 to 35 hz accurate frequency reproduction and topping out slightly above 100 hz --- this is with the threshold being half the peak volume. As far as I know this is quite good for a setup such as mine. A 12" Pioneer sub of equal cost and same setup was much higher at this threshold (about 40-42 hz). At sub frequencies this low, the difference is very noticeable in bass music tracks, and even in the low rumble of a concert bass drum, however metal/rock/country/pop or what have you, the difference will be unnoticeable.
In summation: this driver performs very well at it's intended purpose low frequency reproduction, in the price range of less than $100. If you intend to burp out 40-70 hz bass at incredible dB, you could probably do better (get a low-end kicker model or some such, they might handle more power, but it seems some of those drivers don't respond well in ultra sub-bass). Very happy with this purchase.

By Hamiltonian Bass Fiend on March 27, 2011

45

found this helpful.

Best bang for the buck

A subwoofer with 14mm of REAL xmax for this price is unbelievable. It wasn't long ago a subwoofer of this quality would set you back quite a lot. The build quality is excellent from the heavy gauge stamped basket to the rubber coasted tinsel leads. All of the glue joints seemed neat and clean, I have no reason to believe this sub won't last me the life of my car.

In my opinion this woofer is completely underrated at 275W RMS. A 2" coil with vented pole piece means thermal compression should be minimal. A large linear throw, and progressive spider to handle high power transient peaks means the woofer is mechanically robust. As long as you have a moderately sized sealed enclosure or a PROPERLY designed ported box 400-500W should be no problem for this beast.

I've been running two of these in a sealed enclosure (1cf per sub no fill) with 300W RMS of class AB power. They're as efficient as any subwoofer I've used before, and handle everything down to 20Hz with plenty of control. The haven't struggled with anything I've thrown at them and just sound darn good with all types of music.

The only thing I don't like is the cheesy plastic dust-cap. I liked the old orange JBL logo with the peak wattage stamped proudly in large font. Oh well, nothing is perfect.

By Jason on April 17, 2009

42

found this helpful.

nice sub for $$

got it hooked to a 600w mono and it sounds like I wanted it to. Not gonna blow the windows out but fills out the sound and can kick when necessary. great experience all around with the sub and sonic!

By mike on January 26, 2011

41

found this helpful.

Decent subwoofer

One of the better entry level subs around. The JBL GT5-12 once matched with the right amp, will not disapoint.

By Kevin on May 2, 2010

42

found this helpful.

More impressed than the rock P1 or P2

Was quite surprised in the sound quality and the difference in the bass that it produced compared to the difference surface design of my Rockfords.
Personal fan of the type R but will def do for a replacement and for time being.

By SB on November 1, 2011

39

found this helpful.

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