Stereo Integrity SQL Series 2 12" D4 Subwoofer | 1000W RMS – High-Performance Sound Quality & Power

Precision Audio Engineering with Extreme Low-End Response

The Stereo Integrity SQL Series 2 12" D4 Subwoofer is designed for audiophiles and bass enthusiasts seeking a perfect balance between musical accuracy and deep, powerful bass. Built using Finite Element Analysis (FEA) simulation software, this subwoofer delivers Sound Quality Loud (SQL)—tight, distortion-free sound with the capability for gut-wrenching low frequencies when needed.

Cutting-Edge Motor & Voice Coil Technology

• SGLC Overhung Motor Design – Optimized for high efficiency, low distortion, and powerful bass reproduction.
• 2.75" Solid Copper Winding Voice Coil – Provides superior power handling and transient response.
• Black Anodized Aluminum Former – Improves thermal dissipation and ensures long-term durability.
• Aluminum Faraday Ring – Reduces inductance for tighter, more responsive bass output.

Optimized Suspension & Cone Structure

• 8 3/8" Dual Nomex Spiders – Ensures linear compliance, minimal suspension distortion, and enhanced excursion control.
• Dual Mirror Flat Woven Leads – Eliminates coil rocking for more stable performance.
• Naturally Dried, Treated Paper Cone – Ideal mass for smooth low-frequency reproduction.
• Tall Roll Rubber Surround – Works in harmony with the Nomex spiders for precise cone movement and longevity.

Versatile Enclosure Compatibility for Deep, Clean Bass

The SQL Series 2 12" D4 performs exceptionally well in both sealed and ported enclosures, making it a versatile solution for various system setups.

• Sealed Enclosure: 0.65 - 1.0 cubic feet – Tight, controlled bass with exceptional low-frequency response.
• Ported Enclosure: 1.5 cubic feet, tuned to 24 Hz – Deep, powerful bass with high efficiency and output.

Thiele-Small Parameters

Enclosure Recommendations

Why Choose the SQL Series 2 12" D4?

If you're looking for a subwoofer that blends exceptional sound quality with serious bass output, the Stereo Integrity SQL Series 2 12" D4 is the ultimate choice. Whether you're aiming for clean, detailed sound or ground-pounding lows, this subwoofer is built to deliver precision, power, and performance.

Upgrade your system with the Stereo Integrity SQL Series 2 12" D4 Subwoofer – where sound quality meets extreme bass!