• Compact 4-inch square replacement woofer driver designed specifically for restoring bookshelf and surround sound speaker cabinets.
• Engineered with a magnetic shielding structure to prevent stray magnetic interference with nearby sensitive electronic screens and monitors.
• Features an 8-ohm nominal impedance and a 30W power handling capacity for clean, low-distortion audio reproduction.
• Built with a durable composite cone and rubber surround for extended bass response and clear, articulate midrange reproduction.
• Designed with a stamped square metal frame and corner mounting holes for drop-in replacement during speaker repair projects.

Features

• Magnetically Shielded Assembly: Internal shielding canvas keeps stray magnetic flux contained, allowing safe placement near electronics.
• 30-Watt Power Capacity: Safely handles up to 30 Watts of continuous power for reliable daily listening.
• Standard 8-Ohm Impedance: Matches typical home audio receivers, bookshelf crossover networks, and surround systems.
• Square Stamped Metal Frame: Durable basket geometry simplifies surface or flush mounting in compatible cabinets.
• Enhanced Rubber Surround: Flexible outer ring ensures smooth cone excursion, stability, and longevity under load.

Specifications

• Model / Part Number: 725/726/141
• Product Type: Square Replacement Woofer / Mid-Bass Driver
• Driver Frame Size: 4 Inches (101.6 mm)
• Frame Geometry: Square
• Power Rating: 30W
• Nominal Impedance: 8 Ohms
• Shielding: Magnetically Shielded
• Application: Home Theater Surround Speakers, Bookshelf Loudspeaker Overhauls, DIY Audio Builds

What's in the Box?

• 1 x 4" 30W 8-Ohm Square Shielded Replacement Speaker Driver