Massive Audio

Massive Audio GTX 84 Subwoofer

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  • Regular price $104.99
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Our GTX 8" Subwoofers are rated at 400w RMS / 800 MAX power with a 2" 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 90oz 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 90oz Strontium Ferrite Magnets
  • Dual Impedance / 2" 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 8"
Watts RMS 400
Peak Power 800
Cone UV Treated / Non-Pressed Paper
Voice Coil 2" Dual 4 Ohm
Surround EROM Foam
Magnet 90oz
Terminals 5 Way Binding Push Terminals
Basket Heavy Gauge Steel
Tinsel Leads Woven Round
X-Max 10mm (1-way) + 10mm Top Plate
SPL 88 dB @2.83V/1m
FS 42.1Hz
Ported Box 12"H x 11"D x 11"W / 7 sq. in. Port Area
Sealed Box 1.1 ft3


Product Manual