GRS 12SW-4 12" 4 ohm Subwoofer

The GRS 12SW-4 12" 4 ohm poly cone subwoofer is a true bargain in replacement subwoofers! This economical sub features a beefy large diameter voice coil, durable polypropylene cone, and extended excursion for high-energy bass reproduction.

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Product highlights:

• Large 2" voice coil and bumped back plate enable high power handling
• Butyl rubber surround ensures high excursion and long-term durability
• Polypropylene cone for perfect balance of stiffness, mass, and self-damping
• Long-throw design for deep, powerful bass

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Product details

GRS 12SW-4 12" Poly Cone Subwoofer 4 Ohm

Now you can replace blown or damaged subwoofers with new drivers that equal or outperform the original! GRS 12SW-4 poly cone subwoofer is not only the perfect replacement for tired, worn-out subwoofers in a variety of audio gear, but they are also a great choice for new designs. The handsome polypropylene cone provide durability and good looks, while the large vented magnet assembly and extended voice coil enable long-throw performance and authoritative bass in a variety of enclosures.

The 12" model features a 2" diameter voice coil with big 8.5mm excursion for solid bass performance in compact sealed and vented enclosures. These versatile subs are also rugged enough for use in dipole and automotive infinite baffle applications.

See the below list of recommended enclosure alignments for new design.

Recommended sealed enclosure: Vb = 1.5 ft^3, F3 = 37 Hz, Qtc: 1.6

Recommended vented enclosure: Vb = 2.5 ft^3, Fb = 32 Hz, F3 = 30 Hz

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Technical Specifications:

• Article number 12SW-4
• Woofer Series Replacement woofer
• Woofer Type Sub Woofer
• Nominal Diameter 12"
• Power Handling (RMS) 120 Watts
• Power Handling (max) 240 Watts
• Impedance (Z) 4 ohms
• Sensitivity (SPL at 1m / 2.83V) 88 dB
• Frequency Response 29 to 800 Hz
• Voice Coil Diameter 2"
• DC Resistance (Re) 3.57 ohms
• Voice Coil Inductance (Le) 1.1 mH
• Resonant Frequency (Fs) 29.6 Hz
• Mechanical Q (Qms) 4.51
• Electromagnetic Q (Qes) 1.27
• Total Q (Qts) 0.98
• Volume of Displacement (Vd) 426 cm³
• Compliance Equivalent Volume (Vas) 3.18 ft.³
• Maximum Linear Excursion (Xmax) 8.5 mm
• Cone / Diaphragm Material Poly
• Surround Material Rubber
• Voice Coil Wire Material Copper
• Basket / Frame Material Steel
• Magnet Material Ferrite
• Overall Outside Diameter 12.25"
• Overall Depth 5.75"
• Baffle Cutout Diameter 11.125"
• Bolt Circle Diameter 11.75"
• # Mounting Holes 8