GRS 10SW-4 10ft Poly Cone Subwoofer 4 Ohm - Deep, Durable Bass

In this review the GRS 10SW-4 10' Poly Cone Subwoofer 4 Ohm is evaluated for drivers and installers who want strong low-end impact without overspending. The bottom line: this subwoofer delivers deep, controlled bass thanks to a long-throw design and a robust 2' voice coil, and it stands out for durability with a butyl rubber surround and a polypropylene cone. For someone building a reliable car audio system on a budget, the 10SW-4 offers the most compelling combination of power handling and build quality in its price band.

Key Features

• Butyl rubber surround: provides high excursion and long-term durability so the cone can move freely for powerful low frequencies without degrading quickly.
• Polypropylene cone: balances stiffness, mass, and self-damping to keep bass notes tight and reduce unwanted resonance in varied listening levels.
• Long-throw design: enables deeper output from a compact 10' driver, producing impactful low bass that fills car cabins better than a standard shallow sub.
• Large 2' voice coil: and bumped back plate allow for high power handling and thermal resilience during extended loud playback.
• 4 ohm impedance: makes the subwoofer compatible with most single-channel amplifiers while delivering predictable power draw and headroom.

Who It's For

Car audio enthusiasts who want a compact 10' subwoofer with serious low-frequency capability will appreciate this unit, especially those installing in sealed or small ported enclosures where long excursion and damping matter. It is also a good match for installers looking for a durable driver that tolerates regular use without the upkeep some premium cones demand.

Those who need extreme SPL competition-level output or who require a specific extreme low-frequency extension below typical car sub ranges should look at larger subwoofers or dedicated competition models, as this 10' design prioritizes balance of excursion, durability, and value over the very largest air displacement.

Pros & Cons

Pros

• Deep, controlled bass from the long-throw motor and polypropylene cone that customers note performs like pricier units.
• Durable construction with a butyl rubber surround that supports high excursion and long service life.
• High power handling enabled by a large 2' voice coil and bumped back plate for better heat management.

Cons

• As a 10' sub, it will not move as much air as larger diameter woofers, so those after maximum SPL may prefer a larger driver.

Specifications

Model	GRS 10SW-4
Size	10' (10 in)
Impedance	4 ohm
Cone material	Polypropylene
Surround	Butyl rubber
Voice coil	2' large voice coil
Design	Long-throw with bumped back plate

Our Verdict

The GRS 10SW-4 is a sensible choice for drivers who want dependable, deep bass without paying premium prices. Its combination of a polypropylene cone, butyl surround, long-throw motor, and a large voice coil makes it a strong value for everyday listening and moderately loud systems; buy it if you want durable, well-made low-end that rivals costlier options.

Frequently Asked Questions

Will this sub fit a small sealed enclosure?
Yes, the 10' long-throw design is well suited to sealed and small ported enclosures where excursion and damping deliver tight bass.

Is the 4 ohm impedance compatible with common car amplifiers?
Yes, the 4 ohm rating is compatible with most single-channel car amplifiers and provides predictable power handling.

How durable is the cone and surround?
The polypropylene cone combined with a butyl rubber surround gives the driver strong durability and resistance to wear from high excursion.