RC180-55 2" x 7" Res-Core Neodymium Woofer 4 Ohm

High-Performance, Compact Design

This high-performance compact woofer boasts a unique 2" x 7" racetrack shape, making it the perfect fit for soundbars, portable designs, and other compact speaker projects. With a frequency range of 40-2000 Hz, 30W power handling, and nearly 1" peak to peak excursion, you'll be amazed by the powerful low-frequency capabilities of this high aspect ratio driver.

Key Specs:

• Dimensions: 2-1/4" W x 6-15/16" L
• Power Handling (RMS): 35
• Power Handling (MAX): 70
• Impedance: 4Ω
• Frequency Response: 50 to 2,500Hz
• Sensitivity: 79.6 dB @ 2.83V/1m
• Xmax @ 82% BL: ±4.7 mm
• Xmech: ±12 mm

Download Full Spec Sheet

Fully Supported Diaphragm

Res-Core™ architecture is ideally suited to narrow racetrack shaped drivers. With a conventional round voice coil, the edges of the diaphragm bend and flex causing unwanted breakup and increased distortion. The Res-Core™ flat aluminum bobbin extends the full length of the diaphragm to provide equal force across the whole radiating surface. This ensures that the diaphragm moves in a truly pistonic behavior for improved frequency response, higher displacement, and lower distortion.

Powerful Quad Gap Neodymium Motor

The tall winding height and thin profile of the flat wound voice coil is an ideal opportunity to employ a multiple gap motor system. A pair of powerful neodymium magnets are sandwiched between steel steel plates, each with dual magnetic gaps, to create tall quad gap motor that allows consistent motor strength as the coil travels up and down. This novel approach makes it possible for the RC180-55 to maintain nearly flat Bl all the way up to ±4.5 mm of excursion. Thanks to consistent motor force, this driver will produce minimal amplitude and intermodulation distortion even when pushed to incredible levels of displacement. Also, the voice coil and motor are completely open for the efficient heat dissipation that is required for high power handling with low power compression.

Long Throw Suspension

In order to keep all this potential excursion under control while maintaining liner voice coil travel, the RC180-55 has a long throw suspension unlike any other. The surround has been optimized to keep any surface area modulation to an insignificant level, even when driven to high excursion. Actually wider than the cone and running entire the length of the aluminum bobbin, the huge spider is mounted behind the voice coil for maximum linearity. With ample space and deep convolutions, the spider maintains its level of compliance while allowing a peak to peak mechanical travel of nearly 1". This one of a kind arrangement further reduces amplitude distortions to guarantee incredible dynamics and remarkable output capability.