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10 Appendix
Cyclone Bass architectural specification
The loudspeaker shall be a active sub system consisting of one high power 12” (304.8
mm), direct radiating, reflex loaded, low frequency (LF) transducer mounted in a moulded
fibreglass trapezoidal enclosure.
The low frequency (LF) transducer shall be constructed on a cast aluminium frame with
treated paper cone and a 101.6 mm (4”) voice coil, wound with copper wire on a high
quality voice coil former, for high power handling and long-term reliability.
Performance specifications for a typical production unit shall be as follows: the usable
on-axis bandwidth shall be 40 Hz to 160 Hz (±3 dB) with a maximum SPL of 129 dB peak
measured at 1 m using IEC268-5 pink noise. Power handling shall be 600 W AES at a rated
impedance of 8 Ω. Pressure sensitivity shall be 97 dB measured at 1W/1m. The system shall
be powered by its own dedicated power amplification module with DSP management.
The wiring connection shall be via a single removable, lockable wiring connector with
four screw-down terminals (one pair for input and one pair for loop-out to another
loudspeaker) to provide secure wiring and allow for pre-wiring of the connector before
the installation. This connector should then screw lock to the enclosure to ensure secure
attachment.
The enclosure shall be of a moulded fibreglass reinforced plastic construction with a
smooth cellulose finish and shall include integral threaded inserts for the fitment of wall
and ceiling mounting hardware of any RAL colour. External dimensions shall be (H) 370
mm x (W) 490 mm x (D) 455 mm (14.6” x 19.3” x 17.9”). Weight shall be 33.5 kg (73.9 lbs).
The loudspeaker system shall be a Void Acoustics Cyclone Bass.
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