Garage
Shop

Massive Audio GTX124

1400W Max (700W RMS) 12" GTX Series Dual 4 Ohm Car Subwoofer

Product videos
highlight-star-icon

• 1400 Watts Max
• 700 Watts RMS
• UV treated non-pressed paper cone
• EROM foam surround
• Hi-Temp Black Anodized 2.5" Voice Coil
• High powered woven tinsel leads
• Double stacked 120oz Strontium ferrite magnets

Learn more about the gtx124
Was $189.99 Details
Thanks , You Pay:

$149.99

 with warranty

Heads up

We confirm fitment and offer accessories for speakers. Please set your vehicle first if you would like to purchase more than one gtx124.

Set your vehicle or Return to product page
shipping truck icon Free shipping in USA. Provide zip for delivery date.
Quantity
In Stock
Brand new

Buy it now


Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7
Swoosh Icon Icon of Swoosh

For over 23 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts

Current Promotions (1 offer)


Get a Free roll of Belva 12 Gauge Speaker Wire. Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

Massive Audio GTX124

100% off


Priced separately $156 98

Promo Savings of $6 99

Total price:

$149 99

Product Highlights


• 1400 Watts Max
• 700 Watts RMS
• UV treated non-pressed paper cone
• EROM foam surround
• Hi-Temp Black Anodized 2.5" Voice Coil
• High powered woven tinsel leads
• Double stacked 120oz Strontium ferrite magnets

Description


Massive Audio brand icon

Authorized dealer

The GTX Series subwoofer is rated at 700 watts RMS / 1400 watts MAX power with a 2.5" voice coil configured for dual 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 120oz 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.

General Features:

  • 12" Dual 4 Ohm GTX Series Subwoofer
  • Power Handling:
    • Peak: 1400 watts
    • RMS: 700 watts
  • Recommended power range: 300 - 700 Watts RMS
  • CEA 2031 Compliant
  • UV treated non-pressed paper cone
  • EROM foam surround
  • Round PP Vacuum Dust Cap
  • Hi-Temp Black Anodized 2.5" Voice Coil
  • Heavy gauge Steel Basket with Industrial Texture Painting
  • Spring loaded 5-way binding nickel plated speaker connectors
  • Poly cotton spider
  • High powered woven tinsel leads
  • Double stacked high flux Y30 120oz Strontium ferrite magnets
  • Top-mount depth: 6.69"
  • Cutout diameter: 10.79"
  • Sensitivity: 87.9 dB
  • XMax: 15mm
  • Resonance Frequency (Fs): 40.2Hz
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty
  • Priced Individually

Massive Audio GTX 124 owner’s manual

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Massive Audio GTX124 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Massive Audio GTX124 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Massive Audio GTX124 Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Massive Audio GTX124 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
GTX Series
Subwoofer Size
12"
Peak Power Handling
1400 watts
RMS Power Handling
700 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohms
Voice Coil Diameter
2.5"
Frequency Response
Not Specified by Manufacturer
Sensitivity
87.9 dB
Xmax (millimeters)
15 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Non-Pressed Paper
Woofer Surround
Foam
Magnet Structure
Double Stacked
Subwoofer Grille
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
1.12 cubic feet
Optimum Sealed Box Volume
1.62 cubic feet
Minimum Ported Box Volume
1.7 cubic feet
Maximum Ported Box Volume
2.2 cubic feet
Top-Mount Depth (Mounting Depth)
6.69"
Cutout Diameter
10.79"
Shallow Mount Installation
No
Electromechanical Parameters
Free-Air Resonance (Fs)
40.2 Hz
Equivalent Compliance (Vas)
23.5 liters
Total Speaker Q Value (Qts)
1.24
Electrical Q Value (Qes)
1.56
Electrical Resistance of Voice Coil (Re)
3.4 ohms
Mechanical Q Value (Qms)
6.45
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

GTX 124

Weight:

16.53lbs

Internal SKU:

gtx124

Internal Product ID:

95646

Product and How-to Videos


  • Dalek Massive @ Massive Audio Booth | CES 2014
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

Customer Ratings & Reviews



5 star
62%
4 star
38%
3 star
0%
2 star
0%
1 star
0%



Durability
4.9
Value
5
Features
4.9
Design
4.9
Usability
4.9

Customer Reviews

Sort by:

Loading...

Massive audio

great product built well sound quality is great good bang for your buck

By Anonymous on October 9, 2018 Checkmark Icon Verified purchase

23

found this helpful.

Great deal

Good speakers good quality. They still going. Make the car shake.

By Jason on February 13, 2020 Checkmark Icon Verified purchase

21

found this helpful.

Great product

Pros- looks good hit low and high bass
Con- to me it can’t handle exact rms

By Trae on April 30, 2018

21

found this helpful.

Massive Audio GTX124

Want some bang in the trunk for a decent price n not breaking your pockets . this is the way to go. I got this sub n right out the box it was hitting hard not even broken in. I banged this thing from day one with no problems. for about 2-3 weeks I listen to my radio on vol 25-27. after a few weeks it loosend up a bit n I cranked it up to 37-40 n it just keeps hitting harder n harder . I wouldn't recommend over powering this sub. it will def let you know it doesnt like it. I it hooked a boss riot 1100 rated 800rms @2ohm load, witch thats what I have it wired too. amp is is almost halfway any further theres distortion . ear tuned . this sub does its job can't go wrong with it. if the speaker blows then you messed up on your part . the baby hits. get compliments on how good it sounds everywhere I go. its not shaking the ground n beating your chest in too much but you can hear it and feel it good enough to know its well made and of good quality

By Anonymous on June 26, 2018 Checkmark Icon Verified purchase

20

found this helpful.

great bang for the price

Hesitated about getting a brand I didn't know much about and didn't want to spend a lot, this sub is paired with a RF R500.1D so I'm not giving it the full Rms it can handle, I built a box to spec and it fits perfectly behind my center console in a crew cab truck, looking forward to years if service from this sub

By Anonymous on August 6, 2018

20

found this helpful.

Massive Audio GTX124

Sub works great. Came as expected. It is very well constructed.

By Anonymous on May 14, 2018

19

found this helpful.

A+ Product

A+
Great value
A- Performance
A-Sound
A- Construction
B- Duravility

By HG on January 15, 2021 Checkmark Icon Verified purchase

18

found this helpful.

Massive audio

great product built well sound quality is great good bang for your buck

By Anonymous on October 9, 2018

18

found this helpful.

Good deal

Product came on time and well packaged, for the price these subs cannot be beat. They feel well made and so far they pound, running on 1200w at 1ohm. Overall I'm very impressed with Massive Audio and I will be getting more of their stuff. And for Sonic well we all know they are awesome, I would recommend them to anyone

By Tyler on March 28, 2018

18

found this helpful.

This sub slams.

Would love to add another sub of this model to trunk.

By Jamie on April 26, 2018

16

found this helpful.

Add-ons


Similar Products

Best selling similar products

NVX VCW124 Version 3 (VCW124v3)

• RMS Power: 1200 Watts
• 3” 4-Layer High Temperature Black Aluminum Voice coil
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll foam surround with black nylon stitching
• 202 oz. Triple stacked High Energy ferrite magnet
• Die Cast aluminum vented basket

(120)

$189.99

Kicker CWR122 (48CWR122)

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 2 ohms
• Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 5-3/4"
• Sensitivity: 86.9 dB

(6)

$169.99

Rockford Fosgate Punch P3D4-12

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohms
• Anodized Aluminum Cone
• Santoprene Rubber Surround
• Mount depth: 6.66"
• Sensitivity: 85 dB

(122)

$219.99

JL Audio 12W0v3-4

• RMS Power: 300 watts
• Impedance: Single 4 ohms
• Polypropylene Cone
• Foam Surround
• Mount depth: 5.40"
• Sensitivity: 85.64 dB

(41)

$159.99

JL Audio 12TW3-D4

• RMS Power: 400 watts
• Impedance: Dual 4 ohms
• Mica Injected Polypropylene - MIPP Cone
• Rubber Surround
• Mount depth: 3.5"
• Sensitivity: 84.11 dB

(12)

$499.99

Related Searches


GTX 124 small

Item added to your cart.

Price: $149.99

Essential add-ons
Single 12" Sealed Subwoofer Enclosure

Durable 3/4" Medium Density Fiberboard (MDF) Construction

$109.99

$69.99

Add to cart
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

$6.99

Add to cart
NVX SDTK20

20 Square Feet of Sound Damping Material

$89.99

$59.99

Add to cart
NVX SDBP40

40 Square Feet of Sound Dampening Material

$279.99

$89.99

Add to cart
Stinger RKXTK

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

$209.00

$92.99

Add to cart
Stinger RKX36B

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for the whole car!

$219.00

$140.99

Add to cart
Dynamat Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

$236.95

$149.95

Add to cart
Dynamat Bulk Pack

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

$383.95

$235.99

Add to cart
NVX SDRLR1 Sound Damping Rubber Roller

Universal Professional Heavy Duty Roller for Sound Damping

$9.99

$7.99

Add to cart
NVX SDRLR2 Sound Damping Rubber Roller

Universal Professional Heavy Duty Roller for Sound Damping

$11.24

$8.99

Add to cart
Belva BAMMD1

Six Function Digital Multimeter

$14.99

$6.99

Add to cart
Belva BAMMD3

Nine Function Digital Multimeter

$29.99

$9.99

Add to cart
Save up to 10 different vehicles in your garage

Loading...
Identify your vehicle and submodel details
  • Owner’s manual
  • Vehicle’s insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver’s side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon