Eleven Rooftop Bar


A full gear list can be found at the bottom of this case study.


Eleven Rooftop Bar is Brisbane’s hottest spot to down a few beverages. A stone’s throw from the CBD, the venue boasts spectacular 270° views over Fortitude Valley. The concept was inspired by the rooftop bar culture of Istanbul, as well as holiday getaways to Indonesia and the relaxed vibe of some of Bali’s finest bars. But there’s more to Eleven than just fancy drinks. As the sun goes down and stars come out, the laid back atmosphere morphs into a classy restaurant, then a lively nightclub. Eleven Rooftop Bar never has a dull moment. 

You’ll find plenty of options on the menu, with a focus on tapas-style share plates during the day and a full dinner menu after sundown. The venue’s main bar serves up a variety of drinks, while the smaller Asahi Bar provides an overflow space for busy nights and can double as a private function area for hire.


Andrew Szumowski from Audio One Technologies installed Eleven Rooftop Bar’s audio and control system. The venue’s architectural fit-out is premium quality, and the owner stated upfront that the audio system had to be of a similarly high standard. At the same time, speakers had to be placed discreetly. Primarily playing mood music, the system also needed enough headroom and clarity to cater for DJs brought in at nighttime and for events.

Another hurdle was managing spill. The rear of the Asahi bar faces high-rise residential apartments so low end output had to be strictly controlled. Andrew turned to d&b loudspeakers to deliver the no-compromise performance his client requested.


The main L-shaped bar area is serviced with three d&b 8S loudspeakers and two d&b 18S subwoofers for low end. Four booths lining the far end of the bar are covered by a single d&b 5S loudspeaker in each. d&b audiotechnik’s ArrayCalc software guided the decision of where best to place the speakers to ensure consistent sound in every spot. 

“I worked with the guys at NAS to get the coverage right,” says Andrew. “I gave them copies of the plans with the brief as well. They did a model for me using ArrayCalc. We were originally going to put the speakers in a different position, but looking at the model, they said if we mount them a little higher and pointing back into the bar at the right angle, it would cover everything. The capacity is about 400 people, and it covers it easily. There’s really no flat spots in the whole venue.”

Andrew says the d&b 8S speakers were perfect for the Asahi bar area where sound couldn’t leak into the residential apartments nearby. The eight-inch models provide full-sounding audio and generous SPL, yet without excessive low end travel. 

With ArrayCalc’s installation guidance, Andrew ensured he met the client’s other expectation to keep audio elements discreet. “The subs have been built into an area with one of the walls so it’s all architecturally hidden. We used acoustic foam to stop any rattles. The speakers are mounted high up and tucked out the way so you can’t really see them.”

Andrew used a Cloud Electronics Z8 Mk4 multi-zone mixer to handle audio distribution in Eleven’s three distinct zones. A Cloud remote wall panel in each zone allows staff to adjust audio source and level in each space. An iPod or phone can be plugged directly into the wall plate for music playback, and XLR patch points for DJs are built into the walls.


Eleven Rooftop Bar has enjoyed the audio system for two years now. 

“The owner loves it,” says Andrew. “They haven’t had any downtime and the system is running perfectly. I pop my head in once every few months and it’s all running as it should. DJs give it the thumbs up which is always a good thing. They’ve got about a 105dB limit in there and I’ve been up there with that limit and there’s still heaps of atmosphere.”

The full range of d&b audiotechnik can be found here. For Cloud Electronics, head here.


d&b audiotechnik xS Series 8S
Power: 150W RMS
Max. SPL: 124dB
Freq. Response: 70Hz – 20kHz
Directivity: 100° conical
Impedance: 16Ω
Weight: 7.4kg

d&b audiotechnik xS Series 5S
Power: 60W RMS
Max. SPL: 118dB
Freq. Response: 80Hz – 130Hz
Impedance: 16Ω
Weight: 2.5kg

d&b audiotechnik 18S
Power: 400W
Max. SPL: 129dB
Freq. Response: 37Hz – 140Hz
Impedance: 8Ω
Weight: 32kg

d&b audiotechnik D20
2RU Four Channel Amplifier
3.5-Inch Colour Touchscreen
2 x 16-Band Equaliser
0.3ms Latency
Weight: 10.8kg

Cloud Electronics Z8 Mk4
Eight-Zone Mixer
Accepts up to Six Inputs
2 x Mic Inputs with Volume
Input for Paging Mic

Cloud Control Wall Panel

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