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JBL GTO Series GT120 12" 4-ohm Subwoofer

Item # 109GT120

JBL knows that everybody has different tastes in bass — that's why they designed GTO Series subwoofers to work...

JBL knows that everybody has different tastes in bass — that's why they designed GTO Series subwoofers to work...

Item # 109GT120

Shop all JBL Component Subwoofers

About the JBL GTO Series GT120

Steven Johnson
JBL knows that everybody has different tastes in bass — that's why they designed GTO Series subwoofers to work great in sealed, vented, or bandpass enclosures. JBL packed over a half century of speaker-building experience into creating these GTO subs, so you can hear bass the way you like it!

JBL knows that everybody has different tastes in bass — that's why they designed GTO Series subwoofers to work great in sealed, vented, or bandpass enclosures. JBL packed over a half century of speaker-building experience into creating these GTO subs, so you can hear bass the way you like it!

The GT120 12" subwoofer boasts a polypropylene cone that's lightweight and ultra-efficient, so you won't need as much power to drive your low notes. But if you like to crank it up, the butyl rubber surround, dual 40-ounce magnets, and progressive spider ensure that this woofer won't bottom out when the going gets tough.

Details:

  • polypropylene cone with butyl rubber surround
  • dual 40-ounce magnets
  • power range 55-250 watts RMS
  • peak power 1,000 watts
  • frequency range 23-450 Hz
  • sensitivity 93 dB SPL
  • impedance 4 ohms
  • top mount depth 6"
  • sealed box volume 1.0 cubic feet
  • ported box volume 2.25 cubic feet
  • Recommended Q-Logic Box Type: 1
  • 1-year warranty

Priced per speaker

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What's in the box:

  • One 12" woofer
  • Owner's Manual
  • Technical Data sheet
  • Warranty card
  • "JBL" sticker
MFR #GT120

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More details on the JBL GTO Series GT120

Pat M.

Product Research

Features
Enclosure Compatibility

Features

Polypropylene Woofer Cone: The woofer cone is made with polypropylene for exceptional transient attack. The cone is light, but strong enough to maintain its shape at high output levels.

Butyl Rubber Surround: A butyl rubber surround is used to guarantee long-term reliability by rejecting moisture and ultraviolet contamination.

Progressive Spider: This woofer is made with a progressive spider. A progressive spider is used because it provides better control than a linear spider at the woofer's excursion limits.

High SPL: A long Xmax (cone excursion limit) and dual 40 oz. magnets make this woofer ideal for high output applications.

Enclosure Compatibility

Recommended Sealed Box Volume: JBL recommends a 1.0 cu/ft sealed enclosure.

Recommended Ported Box Volume: JBL recommends a ported box with an internal volume of 2.25 cu/ft. One 4" diameter x 13.31" long port should be used with a 2.25 cu/ft enclosure.

Recommended Sealed Bandpass Box Volume: JBL recommends a bandpass box with an internal volume of 3.5 cu/ft. The 3.5 cu/ft enclosure should have a sealed chamber volume of 1.5 cu/ft and a ported chamber volume of 2.0 cu/ft. One 6" diameter x 10.57" long port should be used in the ported chamber.

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