Bose RoomMatch® RMS218 VLF-subwoofer

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Bose RoomMatch® RMS218 VLF-subwoofer

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The RoomMatch® RMS218 VLF-subwoofer is designed primarily to extend the low-frequency response of Bose® RoomMatch arrays down to 25 Hz. It features dual Bose LF18 18-inch high-excursion woofers, and a V-baffle design that reduces distortion while minimizing enclosure width. The durable Baltic birch enclosure with 2-part polyurethane coating integrates with all RoomMatch modules for reliable ground-stack applications. Use the RMS218 VLF-subwoofer with RMS215 subwoofer and full-range modules to create RoomMatch 4-way systems.

Very-low-frequency subwoofer – with 30 Hz rated response (-3 dB) and 25 Hz usable response (-10 dB) for the most demanding electronic music and sound-effect program material

Dual Bose LF18 woofers 18-inch, high-excursion, 4.5-inch voice coil, neodymium-magnet transducers provide maximum performance

142 dB peak sound levels – provide balanced subwoofer performance with the largest RoomMatch array systems

V-baffle design – provides increased acoustic loading and lowers port airflow turbulence to improve sound quality, while minimizing enclosure width to allow integration with all RoomMatch modules

Recommended Bose PowerMatch® PM8500 power amplifier – provides optimal power and loudspeaker DSP

Technical Summary

Frequency Range (-10 dB)
25 Hz – 250 Hz

Power Handling, Peak
6000 W (3000 W per woofer)

Sensitivity (SPL / 1 W @ 1 m)
96 dB

Calculated Maximum SPL @ 1 m, peak
Array Position (free field): 134 dB
Ground Stack (half space): 140 dB
Array Position (free field): 136 dB
Ground Stack (half space): 142 dB

Nominal Impedance
2 x 4 Ω (discrete connection per woofer)

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