As Malaysia premier international school that offer Pre-School, Primary and Secondary based on the National Curriculum of England. The curriculum delivered theme of "Learn, Play & Grow" The school caters for expatriate children and locals.The school has Multi-Purpose Hall for their assembly, indoor sports and stage performance with a size bigger than basketball court and ceiling height of 10 meter which is 3 storey in the building. We were invited to design in tender to supply and install Acoustic Panel, Stage Curtain, Sound Reinforcement, Projection and Stage Lighting systems. Through our presentation, our design were accepted from their evaluation and consideration.
Acoustic Panel
We work with our manufacturer to fabricate different types of acoustic panel to treat the hall. The front side stage, both middle side wall and back wall were all treated to absorb all sound of frequencies.Stage Curtain
We provide Motorised Curtain for Center Parting and Top Masking to hide the track, Floodlight and Projection Screen at stage. One of the side stage changing room is where the control switch for motorised parting curtain.
Sound Reinforcement System
The side of each hall has 2 speakers space out per side, front and mid field mounted on wall. The subwoofers place on stage as there's no space below the stage. There are microphones receptacle panel at one side of the stage and junction box mounted at backstage for band instruments and amplification. On stage there are 2 Powered Monitors for foldback or front field audience coverage.
The control room is station at 1 floor above the main entrance looking towards the stage. All microphone inputs connected at the Mixing Console with 4 wireless microphones, and control the speakers level via amplifiers for front, mid fields and subwoofers independently. In the rack there are graphic equalizers for Front of House. Beside the mixer there are Powered Monitors for all levels monitoring.
On stage above mounted Motorised Screen 16x16' between cross beams and projector away the front stage mounted with scissor lift that is kept in the ceiling. When projection start, the lift will lower down to projection level and if is off will retract back to the ceiling as well as the screen. The scissor lift can drop to maximum service level at ground if require any change of lamp and/or cleaning of filter. At projector there is a IR probe that transmit to the receiver at control room, where it can control the projector remote at control room to power the projector and adjust the projection image. All motorised switches is at control room including the power.
Both side of the stage has Video and VGA receptacle inputs. The video inputs is to cater DVD playback or Camera capture at stage for projection on screen. The VGA inputs is for Laptop connection for presentation on screen. Due to the distance, the VGA transmit using Cat5 to prevent signal deterioration. All the signals switching at control room in the rack, and the projector that supplied is able to detect type of signals on the same input without any switching processor. At control room there are DVD playback and VGA connection to the switcher for any scene or backdrop display on projection screen.
Stage Lighting System
The lighting system is using the LED lamp with combination of colours red, green, blue and white. The mixture of colours is control with DMX address. Since is a high ceiling and prevent from changing bulb like the conventional Parcan, so we proposed LED Par of 54 pieces RGBW. There are 12 LED Par hanging below the ceiling with barrel just in front the projector. The LED Par set the same DMX address in pairs side by side of the same spot to achieve higher lux.
On the same barrel there's a Moving Head Spot with their logo design in the gobo for effect display.
Above the stage there are 4 LED Colours Bars mounted with a barrel on the beams in front the projection screen. Each LED bar has 108 pieces RGB to wash the stage/backdrop.
The DMX controller is situated at the control room to adjust and change the scene of LED lights. At the control room there's a standalone Followspot through the window for stage spotlight. This Followspot has colours changing features on control panel.
This project, wiring is our main concern considering the long distance we have to pull the wires. The types of cables of each system and the implementation is very importance to avoid any deterioration or drop of signal. Everything turns out as what we wanted, the only problem is the site voltage instable cause the LED Color Bar burned. To prevent that we installed the voltage regulator to stabilise the power.
