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A UK-first JBL install at Islington’s Grade II-listed Assembly Hall

The Islington Assembly Hall is the first completed project featuring JBL’s new compact 8in line array, supplied and installed by SSE Audio Group

Islington’s Grade II-listed Assembly Hall has committed to an investment in its technical infrastructure, including the first UK installation of Harman’s brand new JBL VTX A8 line array system at front of house.

Future-proofing the installation will bring further stability to a venue which first opened in 1929 before closing in the mid-1980s. After laying dormant for around 30 years Islington Council funded its refurbishment, and in 2010 it appeared back on the touring map.

Following a competitive tender, the Islington Assembly Hall team chose JBL’s new flagship VTX A-Series, specifically A8 and B18 elements.

The installation was undertaken by SSE Audio Group, who were also responsible for the new JBL VTX A12 installation (with VTX A8 acting as delays and front-fills) at London’s Troxy – coincidentally another Grade II-listed art deco building like the Assembly Hall. Able to use the existing infrastructure, and taking advantage of the advanced JBL rigging, they were able to hoist and align the system expediently.

“SSE worked hard to get the system in quickly working around events, and expedited the delivery seamlessly in the time allotted.” said technical manager Tom Watt.

They have flown L/R hangs of six VTX A8 elements per side, adding a further two as lip fills on the stage. Low frequency extension is provided by six B18 single 18in subs, with the entire system powered by four Crown I-Tech 4x3500HD four-channel amplifiers.

After hearing Troxy’s JBL system, “I knew the A8 was a three-way system and it seemed to cover the mid-range better, but the HF detail is also incredible,” commented Watt. “With this PA you notice reflections far less and it worked straight out of the box, with flat EQ. With the 110° degree dispersion, we were able to dispense with the old centre cluster we had before, as the Left / Right stereo imaging is amazing.”

Ed Jackson, Harman Pro tour sound application engineer, ensured the system was optimised, carrying out EASE room predictions and using Harman’s proprietary Line Array Calculator (LAC) – lowering the PA to hit both the narrow balcony and the back of the room.

“Ed’s design was excellent,” stated Watt. “I wasn’t certain six boxes would be enough to hit the back of the room but it is all the weight-loading would withstand. It was a huge relief to find that it was sufficient.”

The subsonic sound is critical since the venue is situated in the densely populated Upper Street and sound has to be contained to avoid noise pollution. “There is huge headroom in both the subs and the amplifiers,” notes Watt.

Also from the Harman portfolio, the venue has added a Soundcraft Vi3000, which Watt described as “extremely fast … everything is where you want it on the surface; there are plenty of faders and it sounds amazing, with warmth and precision.”

Ed Jackson is satisfied that the A8 concept has been proven. “My prime concerns were that we had coverage to the back of the room, which was noticeably lacking in the old PA, and achieve uniform balcony coverage. If it hadn’t worked with the shorter array we would probably have walked away.

“In terms of sound quality from the transducers this series has got the physical parts of the cabinets right to the point where we are not so reliant on DSP. The system sounds good as soon as you turn it on.”

www.harman.com

www.soundtech.co.uk

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