Yamaha v1.01 User Manual download pdf (Page 39)

RAY SUBS IMPLEMENTATION Page 39/58

8.2.3 RS15s arrays

IMPORTANT

RS15s arrays must be installed with bumper set horizontally and all cabinets at 0°.

Flying RS15s columns can significantly improve low frequency coverage in the vertical plane, and

therefore over audience depth provided height is sufficient.

A 12 RS15 cluster flown at 10m/30ft will provide a +/- 3dB pressure level deviation at 100Hz over an

audience area 75m/200ft deep while maintaining 15 to 20dB attenuation on stage (see figure below).

12 RS15 “ALTERNATE” CLUSTER OVER 75M/200FT

8.3 Steered RS15s arrays

8.3.1 Steering technique

RS15s arrays must be flown vertically with bumper set horizontally and all cabinets at 0°.

Coverage adjustments can be efficiently implemented through the “steering” technique, which consists

in implementing delays in cabinets to tilt coverage up or down.

IMPORTANT

- “Steering” techniques should not be applied to clusters of less than 4 RS15;

- Coverage control through steering technique increases with cluster height.

Steering can be applied by group of 2, 3 or 4 RS15s in Omni Mode as well as in Directional Mode

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Yamaha v1.01 User Manual Page 39