Language selection is made by the tour operator using custom stainless steel button panels. Each of the 5 buttons on the outside select one of the following languages: English, Afrikaans, Mandarin, German or Zulu. Once the selection has been made, the operator then presses the centre “Show Start” button. The only venue at which this doesn’t apply is the mine tour, as it mostly consists of sound effects.
This small theatre is used as an introduction to the Gold Reef City Heritage Tour. An Alcorn McBride DVMHD plays a High Definition video out to a Christie DS+60 projector. The resulting image is displayed on a 4 meter wide Definition fixed frame screen. The DVMHD audio is routed through a Symmetrix 322 DSP and then on to 2 self powered Quest QSA400 speakers. Show Control is achieved by an Alcorn McBride InterActivator. The only lighting requirements here are to control house lights which are dimmed by a Helvar dimmer which is controlled by the InterActivator.
These 3 houses are replicas of those that existed in the 1890’s. Visitors can see a typical mine Manager’s house; the house of an artisan or foreman and that of an engineer and his wife, the schoolteacher (Emily Dowse, who was a schoolteacher at the time).
From an AV perspective, each house consists of an Alcorn McBride Show Controller, a DVM7400/A, two 42” Plasma displays, a Xantech Distribution Amplifier and Atlantic Technology in-ceiling speakers. Once again, a language select button panel allows the tour operators to select one of five videos.
One of the public’s favourite venues at Gold Reef City has now been completely revamped and made to look like the shed it would have been.
In contrast to the previous tour venues, there is no video element here, but instead, the visitor experiences a 5.1 Surround “Theatre of the Mind” audio experience. However, an Alcorn McBride DVM7400/B video machine is still used as the AC3 audio playback device. This digital audio stream is decoded into its 6 separate analogue channels by a Midiland ADS4000 decoder. From here, the DSP is provided by 3 Symmetrix 322 processors. The signal then passes through 3 Quest QA2004 power amplifiers and on to a Quest HPI-8 loudspeaker system. Show Control is provided by an Alcorn McBride InterActivator and a DMX Machine.
Once the operator has made his language selection on the Show Control Panel, the “Show Start” button then dims the house lights, plays the selected audio and begins a programmed lighting script written into the DMX Machine. As the story unfolds and the operators begin pouring the gold, the process is illuminated, focusing the attention of the audience onto the “stage”.
Once the audio show is over, the house lights are dimmed back up and a themed lighting state is maintained. The visitors are then given the opportunity to touch a gold bar as the exit the venue. Prior to the next show, the operator makes his language selection again which in turn resets the house and theme lighting to a pre-show state and readies the system for the upcoming show.
The underground tour begins in an enormous shed containing one of only a handful of complete Whiting Steam Hoists left in the world. A corridor leading through the shed to the mine lift deck contains an array of information pertaining to the visit ahead and a video of the history of the gold deposits in the Johannesburg area is displayed on 3 Plasma displays. This video is played from an Alcorn McBride DVM7400. Show Control is provided by a V16+ and a DMX Machine. Two AM4 audio machines provide audio sound effects. All audio, video and lighting is run by looped sequences which are triggered at the beginning of each day by a daily timer and shut down at the end of each day. Hidden Atlantic Technology AW424 speakers mimic the original machine shop environment and a DMX controlled smoke machine with synchronized lighting effects create high pressure steam effects. Once the visitors have seen the steam engine, they advance to the end of the corridor, pick up helmets and torches and proceed to the mine yard before descending underground. The trip down the mine takes visitors 220m below the surface.
Hidden speakers (Atlantic Technology AW424’s) create pockets of ambient mine sounds including voices speaking a language developed by miners called ‘fanagalo’, squealing wheels, drills, chisels, rock falls and the like. The audio in each audio pocket comes from Alcorn McBride AM4/A’s. Simple looped playlists were created which loop the audio files continuously as soon as power is applied to each machine. Power to the AM4’s is switched off at the end of each day and on again at the beginning of the day.