GTR62 - 6.5" 400 Watts RMS Dual 2 Ohm Subwoofer With Grill
 
The GTR Series subwoofers by Massive Audio are engineered to deliver extreme performance with audiophile-level sound quality.
Custom High Roll Foam with MASSIVE Logo
High Powered Woven Tinsel Leads
Heavy Gauge Steel Basket
Terminal Case with Flexible Pure Copper Wire
Dual Impedance / 1.5" Hi-Temp Voice Coil - Made in the USA
High Flux Y30 120oz Strontium Ferrite Magnets
Sensitivity: 79.5 dB 
Top Mounting Depth: 5.44"
Resonance Frequency (Fs): 55.8
XMax: 10mm 
Recommended Ported Enclosure: 7.9"H x 15"D x 8.7"W sq. in. Port Area
Recommended Sealed Enclosure: 0.35 ft3