GTX122 - 12" 700 Watts RMS Dual 2 Ohm Subwoofer

Availability: Out of stock
$ 149.99


Our GTX Series subwoofers are rated at 250-1000 watts RMS / 500-2000 watts MAX power with a 1.5-2.5" voice coil configured for dual 2/4 ohm impedance. All GTX subs use tight Red stitching that’s sewn through a UV treated non-pressed paper cone onto a EROM foam surround. Then it’s bonded to a heavy gauge steel basket that’s bolted to double stacked high flux Y30 70-150oz Strontium ferrite magnets with a 10mm top plate. Then everything dances on a springy poly cotton spider with high powered woven tinsel leads that connect to spring loaded 5-way binding nickel plated speaker connectors. These woofers scream sound quality and truly represent Massive Audio's commitment to value and performance.


  • Heavy gauge Steel Basket with Industrial Texture Painting
  • Dual Stacked High Flux Y30 120oz Strontium Ferrite Magnets
  • Dual Impedance / 2.5" 4 Layer Hi-Temp Voice Coil
  • Poly Cotton Spider with Woven Round Tinsel Leads
  • UV Treated / Non-Pressed Paper Cone with EROM Foam Surround
  • Round Shape PP Vacuum Dust Cap
  • 10mm Top Plate
  • Customized Rubber Gasket & Magnet Boot


Size 12"
Watts RMS 700
Peak Power 1400
Cone UV Treated / Non-Pressed Paper
Voice Coil 2.5" Dual 2 Ohm
Surround EROM Foam
Magnet 120oz
Terminals 5 Way Binding Push Terminals
Basket Heavy Gauge Steel
Tinsel Leads Woven Round
X-Max 15mm + 10mm top plate
SPL 88.6 dB
FS 41Hz
Ported Box 14"H x 16"D x 16"W / 14.05 sq. in. Port Area
Sealed Box 1.62 ft3

Customer Reviews View on Amazon Write a Review

  out of 5 stars

5 star
4 star
3 star
2 star
1 star

(% riStoreData.settings.write_review_sub_heading %)

Max. 5 allowed
Max. 2 allowed

(% riStoreData.settings.ask_question_sub_heading %)

(% riStoreData.settings.write_comment_sub_heading %)

(% riStoreData.settings.report_abuse_sub_heading %)

(% comment.comment %)

No Comments

(% riStoreData.settings.reviews_overview_heading %)

Filter | | | | | Previous Page Next Page (% %)/(% %)
(% authorFirstLetter( %) (% authorFirstLetter( %) (% %) verified
(% review.title %)
(% %) : (% review.option1.value %) (% %) : (% review.option2.value %) (% %) : (% review.option3.value %)
Click to Zoom
Click to Zoom
(% review.date_time_str %) Verified Purchase
Comments((% review.comments_count %)) Report Abuse
((% review.thumbs_count %)) Helpful

showing reviews from (% %) to (% %) Previous Page Next Page

No Review Found.

(% riStoreData.settings.questions_overview_heading %)

(% %) Questions Asked
Filter | | | | | | Previous Page Next Page (% questionsData.questions.current_page %)/(% questionsData.questions.last_page %)
(% authorFirstLetter( %) (% authorFirstLetter( %) (% %)
Q : (% question.question %) ?
Asked on (% question.created_at %)
A : (% question.answer %)
By (% question.answered_by %) on (% question.answered_at %)

showing questions from (% questionsData.questions.from %) to (% %) Previous Page Next Page

No Question Found.


Ask a Question
  • What is the height if the subwoofer?

    All we have published in the manual is the mounting depth which is 6.69"

  • Ok ive got a single 12 massive gtx122 and its in 2003 f150 super crew xlt all is well but im being forced to get new box for under my seat whats better sealed enclosure or ported any help plz

    Please contact our tech support at Thank you and stay safe.

  • I have already built a ported box that is 15"x15"x17", will this affect the performance?

    15 x 15 x 17 external using 3/4 MDF 

    approximately 1.5ft3 after port+sub displacment

    it would work, whoever I recommend bigger box for better performance. in the range of 2.5 ft3 and 44Hz tuning

  • Would it be recommended to use the GTX 122 in a bandpass enclosure? If so, what would be the best specs for that enclosure.

    Bandpass boxes are ideal for certian systems although not always suggested no matter what subwoofer. However due to the numerus variables we do not offer bandpass specifications. this would have to be done by an installer than can measure your cab and set the tuning based on your preferred music. You can email us at for specific questions and we will do our best to answer what we can responsibly. 

  • Would you have any speaker recommendations for a 1997 F350 CrewCab? I have a new receiver that's great now I really need some good sound. What I have isn't bad but it needs something better. Thank you for your time and help.

    Entry priced: MX 5x7/6x8
    Step up: FX 5x7  

  • can I use the GTX122 - DUAL 2 OHM SUBWOOFER in a 1997 F350 crew cab?

    You can use this subwoofer in any system but it requires a box so the space needed would be your only unknown. We have different suggested box sizes in the manuals that you can view on this page. 

  • This comes with 2 speakers or just one?

    Single Subwoofer