Alpine SWR-T12 12″ slim sub

Slim 300w RMS 12″sub


Alpine’s Type-R Thin Subwoofers have been engineered to offer greater installation flexibility. At only 89mm deep the SWR-T12 provides deep bass performance where traditional subwoofers just can’t fit. Boasting several unique Alpine technologues in its industry-first design, these innovations allow the Type-R Thin to have the output and power handling of the traditional Type-R series in less that half the depth.

An all-new FEA Optimised motor structure and HAMR surround give the new Type-R Thin subwoofers the highest X-max and SPL output in their class. Alpine’s patent pending Pass-Through Gap Geometry, allows the unique Thermoplastic Elastomer Segmented Spider to completely pass through the motor structure. This means the cone and voice coil assembly have the clearance needed for over 50mm of peak-to-peak excursion, allowing for massive output even in such a shallow frame.

The new Type-R Thin design has the same DNA of the standard Type-R subs – demanding cleaner, deeper bass extension, faster, more accurate transients and even greater output capability.


Material: Aluminum
Design: Structural Parabolic w/ Force Transfer Assembly
Material: Injected Molded Santoprene
Design: FEA-Optimized High Amplitude Mutli-Roll (H.A.M.R.) (Patent Pending)
Material: Thermoplastic Elastomer (TPE)
Design: Co-Molded Regressive w/ Integrated Tinsel Leads

Voice Coil
Material: 220C Edge-Wound Copper Ribbon Wire
Design: Oversized 100mm (4”)
Underhung Voice Coil

Motor Structure
Pole Geometry: FEA-Optimized Dual Compound Radius Curve w/ Pass Through Gap Design (Patent #6,639,993, 2 Patents Pending)
Configuration: Radial Vented VC Heat Sink & Shorting Sleeve w/ Airflow Management System (Patent 7,634,101)

Material: Cast Aluminum
Design: Direct-Couple Shorting Sleeve/Heatsink and Frame Design

Layout: One Side Design: Heavy Duty Gold-Plated Insert Block Terminals Tinsel Leads
Design: Woven Spider Integration Design
Design: Concealed Mount Gasket System


Power Handling
CEA-2031 Power Rating: 600W Power Range: 300 – 600 Watts RMS Power Handling: 600W Peak Power Handling: 300 – 600 Watts

Mounting Depth: 89 mm (3.5”)
Mounting Diameter: 275mm (10.85”)
Displacement: 0.08 cu. ft (Front Mount)
Added Volume: 0.05 cu. ft. (Reverse Mount, Magnet Out)

Frequency Response: 26Hz – 200Hz
FEA Optimised HAMR Surround
Thermoplastic Elastomer Spider
4″ Voice Coil
Radial Vented VC Heatsink
4ohm Impedance
Aluminium Cone
Cast Aluminium Frame

Sealed Enclosure size
Recommended: 17.0L

Vented Enclosure size
Recommended Volume: 28.3L
Round Port Dia. x L (cm): 10 x 34
Slot Port W x H x L (cm): 10 x 7 x 37


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