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Pearl Jam Electrifies Fans with K1 on Lighting Bolt Tour

Pearl Jam performing at Calgary, Alberta's Scotiabank Saddledome on December 2, 2013 (photo credit: Warren Hope, Calgary)
Rat Sound supplies full L-ACOUSTICS rig for two-month North American trek

SEATTLE — Pearl Jam very recently wrapped up a sold-out, two-month sweep of North American arenas in support of its tenth and latest studio album, Lightning Bolt. The outing marked the Seattle-based rock band’s first official return to the tour circuit since 2010, and, as it did then, the group carried a full L-ACOUSTICS K1 system supplied by Rat Sound Systems, Inc.

Rat Sound’s relationship with Pearl Jam goes back to the band’s debut album, Ten (1991), when it opened for one of Rat’s other longtime accounts, Red Hot Chili Peppers. Since then, the company has served as the group’s primary live production provider.

A close-up of one of the K1/KARA/K1-SB array pairs (photo credit: Madeline Keyes-Levine)
According to Rat Sound’s Kevin McKenzie, Pearl Jam’s system tech for the past decade, the PA deployed at each stop typically featured 14 K1 plus six KARA downfills per side with adjacent hangs of a dozen K1-SB. Additional left and right side hangs were both comprised of ten K1 and six KARA, while four more arrays of 15 KARA each provided the 270- and 360-degree reinforcement positions for most venues.

To augment the low end provided by the flown K1-SB arrays, eight SB28 per side were ground-stacked in front of the stage, with eight ARCS II enclosures and six self-powered 108P coaxials providing front-fill. The entire system was driven by LA8 amplifiers and controlled via L-NET.

“We run across many decent-sounding ‘competitive systems’ when doing festivals in Europe and South America, but, to me, K1 is still the best tool for this show,” says McKenzie. “Compared to V-DOSC, it throws farther and a little bit wider, plus has more horsepower, which was great for a loud rock tour like this. Our signal path was fully digital at 96k between the DiGiCo SD5 house desk and LA8 amps, and the sound was always crystal clear each night with consistently even coverage delivered to every seat in the house–including those behind the stage as most shows were sold 360 degrees.”

Ground-stacked SB28 subs and ARCS II front fills (photo credit: Chuck Smith)
McKenzie points out that he further appreciated the low-end complement of the K1 system provided by K1-SB and SB28. “K1 is a full-range box and can obviously be used with SB28 with great results,” he says. “However, we chose to also fly 12 K1-SB per side, which coupled very well with the K1 arrays and provided truly tight, chest-thumping impact and uniform low end contour to the entire audience. Adding the ground-stacked SB28s to that really rounded out the bottom and created a very satisfying ‘hi-fi’ sound.”

The Lighting Bolt tour kicked off on October 11 in Pittsburgh and wrapped up with a hometown Seattle show–Pearl Jam’s first in more than four years–at Key Arena on December 6. For more details on the tour, visit

Based in Camarillo, California, Rat Sound Systems, Inc. can be found online at

L-ACOUSTICS is a leading innovator and manufacturer of high-performance loudspeakers, amplifiers and signal processing devices for touring and installed sound markets. Known around the globe for pioneering and championing the modern line array loudspeaker concept with V-DOSC, the company has received numerous accolades for its K1, KUDO, KARA, KIVA, ARCS, XT coaxial loudspeaker systems and SB line of subwoofer enclosures, all powered and processed with the LA4 and LA8 amplified controllers in fulfillment of a “total system approach.” Product distribution and customer service for the USA is handled by L-ACOUSTICS’ subsidiary in Oxnard, California.

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