Alarms

Harry Potter loop

by msecadm4921

A collection of SigNET’s PDA-range induction loop amplifiers have been installed at the new Harry Potter set at Warner Bros studios. The set in Leavesden now hosts the behind the scenes “Harry Potter Studio Tour”.

 

Two of SigNET’s PDA1000/2 and three PDA500/2 induction loop amplifiers are in operation to ensure that the tour, which includes the actual Great Hall of Hogwarts School and headmaster Dumbledore’s office, is accessible to the hard of hearing. An audio-installation company, Clarity UK, used designs drawn up by SigNET’s induction loop designer, Tremayne Crossley. SigNET’s APSS Phase Shifter was used to combat overspill from the loop so people with hearing aids outside a room cannot pick up conversation) and to ensure consistent coverage throughout the site thus avoiding ‘dead spots’ (the areas directly above or below the loop cable where the signal suddenly drops to zero and cuts out sound altogether). Giles Palmer of Clarity said: “By taking the signal from the studio’s in-house audio system, the APSS produces two signals 90 degrees out of phase with each other. These signals are fed into two identical loop amplifiers, which are, in turn, connected to two loops laid out in a special overlapping pattern. As a result, the magnetic field is evenly spread within the covered area but the strength falls off much more quickly than normal outside the loop thus minimising overspill.” When it came to installing induction loop cable in the Great Hall, Clarity needed to consider the genuine York-stone floor. Giles says: “Normally flooring does not pose a problem when installing induction loop cable but the heavy stone in the Great Hall complicated matters as it threatened to crush the cable. The solution was to specify a specially tough cable and house it within three layers of insulating material.”
 
For more information, contact SigNET on 0844 800 1625 or visit
www.signet-ac.co.uk.

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