The Power Stage 1 T115D4 is a 15″ subwoofer with a RMS rating of 600W and a peak rating of 1200W, so will need a amp with some power to push one of these subwoofers. There are a lot of great things to say about this subwoofer. The Power Stage 1 T115D4 has a huge double-stacked magnet at 220oz. The basket of the sub is designed to help it stay cool. This is a great feature for letting you play the subwoofers longer and loader with out having to worry about the subwoofer over heating. Custom compression terminals accept up to 8-gauge wire. Remember with buying this sub that it is 4 ohms and needs a lot of power to push, keep this is mend with wiring options you are going to be using and the ohm load that it will produce. Depending on your set up it may be better to go with the Rockford Fosgate Power Stage 1 T115D2

Power Stage 1 T115D4 Features and Specs

Parabolic Triangular Geometry cone support system for reduced piston flex
Anodized aluminum parabolic dust cap is ultra rigid while remaining lightweight
Massive 220oz. double-stacked magnet assembly increases excursion capability
Mirror image symmetrical spiders improve mechanical stability and maintain linear travel
Precision 2-piece basket is cast from aluminum alloy to add rigidity and help cool the motor assembly
3″ hard-anodized aluminum voice coil former stays up to 100° cooler
Reversible aluminum concealing ring hides mounting screws
High excursion thermo-rubber surround uses “tall/skinny” profile for linear travel without reducing piston area
Embedded 12 AWG tinsel leads lower resistance for improved reliability
Custom compression terminals accept up to 8-gauge wire
Mounting Depth: 8.5″
Cutout Diameter: 13.76″

Anodized Aluminum Parabolic Dust Cap
High Excursion Thermo-Rubber Surround
Mirror Image Symmetrical Spiders
3″ Voice Coil Former

Size: 15 inch
Rec. Sealed Box Dims: 2.25 – 2.25 cu. ft.
Rec. Ported Box Dims: 3.25 – 3.25 cu. ft.
Free Air Usage: not recommended
Sensitivity: 87.5 dB
Frequency Response: N.A.
Recommended RMS Power: 600W
Peak Power Handling: 1200W
Impedance: dual 4 ohms subwoofer wiring options

Related posts:

1. How To Run Your Power Cable
2. What Is The Difference Between RMS and Peak Power?
3. Eclipse SW8200 Subwoofer Review