Top Dual layer Voice Coil Reviews

Soundstream T5.104 Subwoofer

Key components that you expect from T5 still remain.
big ass 1,000w 3” voice coil, triple-stack magnet structure, high-density Spruce pulp sub-cone, and the iconic black-on-black Soundstream spider..
Overcompensating Motor Structure for Increased Magnetic Strength | 12mm T-Yoke & Top Plate Improve Low-Frequency Dynamics | Vented T-Yoke & Frame Reduces Voice Coil Heat Build-up.
Non-magnetic non-resonate die-cast aluminum frame | 3” 4-layer voice coil w/ direct connect wire increases power handling | high-temperature tolerance adhesives resist thermal failure.
Extended excursion polyether foam Surround w/ UV & chemical protection | Dual poly-cotton Suspension dampen violent accelerations | 1-pc gasket/trim ring w/ concealed mounting holes included.
Max power (watts) 1, 800 | RMS power (watts) 900 | efficiency (1W/1M dB) 83.5Db | voice coil configuration 3″ dvc 4Ω.

Composite multi layer ceramic fiber and Rohacell cones structure.
Voice coil (Single or dual): Single | Voice coil impedance (ohms): 4 | Voice coil Diameter (inches/mm): 1.4/35.56 | Recommended Power Range (watts): 15 to 125.
Mounting Diameter Tweeter(inches/mm): 1.97/50.04 | Mounting Depth Tweeter(inches/mm): 0.8/20.32 | Mounting Diameter Midbass(inches/mm): Standard | Mounting Depth Midbass(inches/mm): 3.61/91.69.

2.5" Dual 4-Ohm 4-Layer Voice Coil, Royal Blue Finish with Diamond Cut Accents, Die Cast Aluminum Voice Coil Heatsink.
Non-Pressed Pulp Cone, Polyether Foam Surround. RMS power handling: 1,500, efficiency (1w/1m): 85.40.
Nickel Plated 8ga Compression Wire Terminals, Dual Poly-Cotton Spiders, Die-Cast Aluminum Frame, Vented Pole Piece.

Specifications: DC Resistance (Re): 7.75 Ω | Resonance Frequency (Fs): 36.95 Hz | Equivalent Volume (Vas): 52.35 L | Electrical Q Factor (Qes): 0.85....
Box Recommendations: Sealed Enclosure Suggestion: 2.5 cu. ft. | Ported Enclosure Suggestion: 3 - 4 cu. ft. @ 35 Hz | Displacement: 0.17 cu. ft. |....
Thick black anodized aluminum voice coil formers for maximum strength and heat dissipation | 4‐layer copper high temperature voice coil windings....
Custom tooled frame spacer / ventilation ring | High efficiency air‐flow management integrated into the motor for maximum voice coil cooling | Dual....

Specifications: DC Resistance (Re): 7.75 Ω | Resonance Frequency (Fs): 36.95 Hz | Equivalent Volume (Vas): 52.35 L | Electrical Q Factor (Qes): 0.85....
Box Recommendations: Sealed Enclosure Suggestion: 2.5 cu. ft. | Ported Enclosure Suggestion: 3 - 4 cu. ft. @ 35 Hz | Displacement: 0.17 cu. ft. |....
Thick black anodized aluminum voice coil formers for maximum strength and heat dissipation | 4‐layer copper high temperature voice coil windings....
Custom tooled frame spacer / ventilation ring | High efficiency air‐flow management integrated into the motor for maximum voice coil cooling | Dual....

2.5" Dual 4-Ohm 4-Layer Voice Coil, Royal Blue Finish with Diamond Cut Accents, Die Cast Aluminum Voice Coil Heatsink.
Non-Pressed Pulp Cone, Polyether Foam Surround.
Nickel Plated 8ga Compression Wire Terminals, Dual Poly-Cotton Spiders, Die-Cast Aluminum Frame, Vented Pole Piece.

2.5" Dual 4-Ohm 4-Layer Voice Coil, Royal Blue Finish with Diamond Cut Accents, Die Cast Aluminum Voice Coil Heatsink.
Non-Pressed Pulp Cone, Polyether Foam Surround. RMS power handling: 1,500, efficiency (1w/1m): 85.40.
Nickel Plated 8ga Compression Wire Terminals, Dual Poly-Cotton Spiders, Die-Cast Aluminum Frame, Vented Pole Piece.

Features: MJME8D1 Dual Mini Mojo 8″ Loaded Enclosure, Piano black gloss finished front panel, Carpet wrapped enclosure, 4-layer wound copper voice coil, Fiberglass reinforced subwoofer cone, Stitched foam surround, Heat dissipating aluminum heat sink, DVVC Direct Vent Voice Coil Cooling, Ported Enclosure, All Mojo Mini Enclosures are @ 1Ω.
Specifications: RMS: 1800W, PEAK: 3200W, Dimensions: (W) 33.5″ (H) 14.6″ (TOP D) 15.25″ (BOTTOM D) 17.75″.

Features: Rockville PUNISHER Series 12" Dual 1-Ohm Car Subwoofer, Peak Power Handling: 5600 Watts, Program Power Handling: 2800 Watts, CEA Rated RMS Power Handling: 1400 Watts, 3" 4-Layer Black Aluminum Voice Coil Former Wound with OFC Wire, This voice coil is stable up to 250 degrees celsius! The voice coil windings are made in the USA, Double Stacked 246 Oz Y35 Magnet, Cast Aluminum Basket With Black Sanded Finish, Two Chrome-Plated Binding Post Terminals, Black Non-Pressed Paper Cone.
Ultra-Stiff cone is extremely thick and strong, Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion, Black stitching reinforces the cone and ensures long life, New Ultra-stiff PolyPropylene (PP) Dustcap is 0.9mm thick (Extremely, thick, beefy, and stiff), Oversized aluminum heatsink ring keeps the voice coils cool by absorbing and dissipating heat, Extra thick T-yoke and washers assist in keeping the voice coils cool by absorbing and dissipating heat.
This series was engineered from the ground up to keep the voice coils cool so that even if you play test tones for long periods of time in a competition atmosphere the sub can handle it, Impedance: Dual 1-Ohm Voice Coils, Vented Holes on T-yoke Enhances Heat Dissipation, Custom Rubber Boot Magnet....

POWERFUL WOOFER: 15 inch high power subwoofer with a mounting depth of 8.25 inches to turn up your car audio bass.
100 WATT RMS: Boasts 1000 watts of RMS power.
DUAL VOICE COIL: Built in 3 inch, 4 Layer black aluminum dual voice coil.
INCLUDES MAGNET: Strontium magnet is 160 ounces.
FOAM SURROUND: Features an air cushion foam surround composite cone.

Features: Vented cast aluminum basket, 4-layer CCAW 3.5" voice coil, 235oz magnet, Fiberglass reinforced cone, Double stitched rubber surround,....
Specifications: 2200W RMS, 4400W Maximum Power, 85dB Sensitivity, 4-Ohm Impedance, 15 Inch Diameter, Dual Voice Coil, and 9.44" Mounting Depth.

SA-15 D4 Rev 2 - Sundown Audio 15" 600W Dual 4-Ohm SA Series Subwoofer.
Thick black anodized aluminum voice coil formers for maximum strength and heat dissipation.
4‐layer copper high temperature voice coil windings with 45mm winding length.