JBL 15" die-cast, 4-ohm voice-coil subwoofer GTO1514

GTO1514

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Big bass with Polypropylene woofer cone

Road noise can destroy realistic audio that always requires true low frequencies. Polypropylene delivers rigidity, with good internal damping, and complete weather-resistance. You get an impossible-to-miss increase in thumping bass.

A JBL-proprietary frame, broad installation options

The proprietary die-cast frame design allows maximum cone excursion while reducing overall mounting depth. The die-cast structure maintains precise alignment tolerances over years of blasting music and rough roads. You get all the bass you’ve paid for.

Exceptional venting for increased power handling

Woofer magnetic structures heat up during use, causing distortion, or power compression that reduces music’s dynamic range, robbing the sound of realism. JBL uses vented motor structures and polepieces that get rid of more heat to deliver more serious bang.

Outstanding audio output, low distortion

With 350 watts RMS and 1400 watts of peak power handling, the GTO1514 changes the experience of listening to your favorite music in your car. And a progressive spider gives better control for lower distortion at excursion limits.

Designed for sealed, vented, and bandpass enclosures

Different people have different opinions on what makes the best subwoofer box. Have it your way with the GTO1514, it can handle anything.


Get the lows bumping big with the GTO1514, a subwoofer design triumph from the JBL® Grand Touring® Series family. It delivers deep, solid, tight bass and serious power that can only come from the leader in live performance sound. GTO subwoofers include die-cast aluminum baskets, polypropylene cones, rubber surrounds and a unique tinsel wire protector. The GTO1514 has a 4-ohm voice coil and 1400 watts of peak power handling. It can handle whatever you can dish out. Sure, it’s your car. But we think we know what your standards are no matter where you are and where you go – and they’re ours too.

(1) GTO1514 15” ” die-cast-single-voice-coil subwoofer
(1) Owner's Manual

General Specifications
Size15"
SeriesGrand Touring
Audio Specifications
Peak Power1400W
Nominal Impedance4 ohms
Sensitivity(2.83V/1m) 93dB
Frequency Response23Hz–400Hz
Power Handling (RMS)350W
Power Handling (Peak)1400W
Dimensions
Mounting Depth (mm)172
Mounting Cutout Diameter (in)13-15/16
External Diameter (in)15-5/16
Mounting Cutout Diameter (mm)354
Mounting Depth (in)6-13/16
External Diameter (mm)389
Woofer Specifications
Free-Air Resonance(Fs – Hz) 25.1
Maximum Excursion(Xmax –in/mm) 0.57/14.5
SurroundHi-roll rubber
Total Q(Qts) 0.49
Vented PolepieceYes
Voice Coil Height(Hvc – in/mm) 1.45/37
Motor Force Factor(Bl – Tm) 17.13
Mechanical Q(Qms) 7.08
Electrical Q(Qes) 0.52
Driver Radiating Area(Sd – in2/cm2) 128.7/830
Voice Coil2" (51mm) diameter
Suspension Compliance(Cms – ?m/N) 156
Voice Coil DC Resistance(Hvc – in/mm) (Revc – ohms) 3.8
Low-Frequency Transducer15" (380mm) Polypropylene cone
Compliance Volume(Vas – ft3 / l) 5.42/153.5
Progressive SpiderYes
Voice Inductance@ 1kHz (Levc – mH) 3.05
Magnetic Gap Height(Hag – in/mm) 0.31/8
Diecast Aluminum FrameYes

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