San Francisco’s luxurious Sir Francis Drake hotel has anchored the city’s famed Union Square since 1928. And since the landmark hotel’s opening day, Lizzie’s Starlight (originally the Starlight Room) has drawn hotel guests and locals alike to the roof of the 21-storey hotel for entertainment, food, drinks and spectacular views.

Lizzie's barIn 2019, Lizzie’s underwent a major renovation – torn down to bricks, bare floor and bare ceiling and entirely remodelled. Ayre Productions, the company behind multiple projects for owners Kimpton Hotels and Restaurants, designed and installed a new audio system for the venue, driven by Linea Research 44C and 88C Series power amplifiers.

‘We worked on this project for two years, and the design has changed three or four times,’ notes John Wagner who, along with brother Joe, is co-founder and co-owner of Ayre Productions. ‘We’re a Pioneer Pro Audio dealer, and we specified Pioneer loudspeakers before we were involved with Linea Research. Pioneer partners with another amplifier company, so we had planned to use those amps.

‘But then we were introduced to Linea Research amplifiers through Martin Audio – another of our lines. We did comparative listening tests with Linea Research amps and two other major brands, including the amps in our original design, and the Linea amplifiers came out on top because of their warmth and clarity. So we not only changed the design for Lizzie’s Starlight, we sold off our other amplifiers, and now we just install Linea Research.’

The biggest challenge at Lizzie’s Starlight was the room-combining scheme. Although the overall space is not all that large, it’s divided into four meeting rooms of varying sizes (one of which includes the main dancefloor) that can be combined into a single space. It’s a configuration that enables the venue to draw daytime business for meetings and other events, in addition to its traditional identity as a nightclub. Not surprisingly, it somewhat complicated the sound system design.

‘Because of the size of the four areas, we made the focal point the centre of each area,’ Wagner says. ‘With the rooms separated, there is minimal bleed-over between rooms. The client wanted a different, yet fun-looking, speaker to accent the new décor, so we choose Pioneer Pro Audio XY-2 loudspeakers, with XY-81s for small fills where the XY-2 wasn’t needed. The South Room, with the dance floor, is set up with two XY2s, two XY-81s, and a XY215S subwoofer, plus Pioneer Pro’s new CM-C56T in-ceiling speakers in acoustically treated ceilings. The North, East, and West rooms use various combinations of XY2 and XY-81 loudspeakers and XY-115s subwoofers. The host area, elevator entrance, and restrooms have acoustically treated ceilings with CM-C56T in-ceiling speakers.’

Lizzie's StarlightThe Pioneer XY-2s and subwoofers are driven by a 4-channel Linea Research 44C10 and two 8-channel Linea Research 88C06 amplifiers. Optimised for installations, the 44C10 provides 2.5kW RMS per channel into 2Ω, 4Ω or 70/100V and 1.5kW RMS into 8Ω, with all four channels driven. The 88C06 delivers 750W RMS per channel into 2Ω, 4Ω or 8Ω loads or 70/100V, with all eight channels driven.

‘Most companies rate their power amplifiers in peak power, so when I started using Linea Research amplifiers, I had to get used to designing based on RMS, where a 10kW amp is really 10,000 watts,’ notes Wagner. ‘We can easily run four subwoofers on one Linea Research amplifier. We use Furman power sequencers that provide 20A per amplifier, and I’ve yet to have a problem with that not being enough.’

The new audio system at Lizzie’s Starlight is managed by one Symetrix Prism 12x12 and one Prism 0x0 DSP. ‘We installed a Dante audio network throughout the space, and each meeting room has two Dante connection points, although in one meeting room the two points are the same connection,’ Wagner reports. ‘However, I did not use the Dante version of the Linea Research amplifiers. Maybe I would if I were doing it again but feeding the amplifiers from the 12 analogue outputs of the Symetrix Prism 12x12 DSP works well.’

All processing for the Pioneer loudspeakers and subwoofers is done using the Linea Research amplifiers’ onboard precision 96kHz DSP. ‘I rebuilt all of the profiles for the Pioneer speakers, loading them into the amplifiers,’ discloses Wagner. ‘With Linea Research’s programming GUI, I was able to do whatever I needed. Aside from signal routing, I mostly use the Symetrix DSP for special needs and last-minute things like live mic feedback control.’

Lizzie’s Starlight is now open for business, and the new sound system is fully operational. ‘They are very happy with the sound and performance of the new audio system,’ Wagner reports. ‘It is a night and day improvement over the system they had before.’

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