Datasheet — X-400C
Compact Cinema Subwoofer
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X-400C Loudspeaker (Shown without optional black cloth‑covered grille frame) and Dimensions
Part of Meyer Sound’s cinema series, the X‑400C Compact Cinema Subwoofer boosts low‑frequency headroom in cinema applications and other fixed installations. The linear, self‑powered X‑400C offers similar sonic characteristics to the X‑800C subwoofer— low‑frequencies down to 20 Hz, clean, punchy transients, and excellent phase coherence—in a more compact cabinet that can be installed singly or as multiple units.
The X‑400C comprises a single 18‑inch low‑frequency, long‑excursion cone driver housed in an optimally tuned, vented cabinet and powered by a single‑channel amplifier. On‑board processing includes driver protection circuitry, low‑pass filtering, and correction filters for flat phase and frequency responses.
The Intelligent AC™ power supply provides automatic voltage selection, EMI filtering, soft current turn‑on, and surge suppression.
The X‑400C integrates seamlessly with other cinema loudspeakers, including the Acheron screen channel loudspeakers and HMS surround loudspeakers.
Meyer Sound constructs the X‑400C cabinet of premium multi‑ply birch and coats it with a slightly textured black finish. The cabinet includes attachment points for an optional grille frame covered with black cloth.
Meyer Sound’s optional RMS™ remote monitoring system module facilitates comprehensive monitoring of the loudspeaker parameters from a Mac® or Windows®‑based computer running Compass® control software when used in conjunction with an RMServer™ hardware unit.