LS 1 OC 100 E Hemi Directional Loudspeaker

LS 1 -OC 100 E Hemi Directional Loudspeaker Communications Systems 1 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Overview è Introduction • The product • Applications è Technology è USPs, Benefits and Features è Design guidelines è Installation è Installed projects Communications Systems 2 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Hemi-directional ? ? ? sphere è hemisphere Hemi-directional comes from hemisphere Communications Systems 3 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Hemi-directional? ? ? Radiation pattern plot from EASE è The radiation pattern looks like a hemisphere • Sound is radiated equally in all directions in front of the loudspeaker - So not to the ceiling!! Communications Systems 4 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

LS 1 -OC 100 E Hemi-directional loudspeaker è Pendant ceiling loudspeaker è High power: 100 W • High SPL: SPLmax= 109 d. B @ 1 m è Large opening angle è Large areas can be covered by this loudspeaker!! Communications Systems 5 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Applications è High ceiling areas where ceiling mounting is required, due to: • Many obstructions at the floor • Limited amount of mounting positions, due to large open area. Communications Systems 6 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Applications Mega stores Application note is available Communications Systems 7 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Applications Exhibitions Application note is available Communications Systems 8 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Applications Swimming pools Communications Systems 9 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Introduction è A conventional ceiling loudspeaker is not suitable for these applications, since: • The SPL is not sufficient for high mounting • And/or the opening angle is limited, so many units would be required - This causes high installation costs. Communications Systems 10 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Introduction è The hemi-directional loudspeaker in contradiction has: • High SPL (SPLmax = 109 d. B @ 1 m) • And a large opening angle for the whole frequency range! Hz 125 250 500 1 k 2 k 4 k 8 k Hor. >18 145 125 170 >18 145 65 0 0 Ver. >18 155 135 170 >18 170 70 0 0 Communications Systems 11 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Technology è Problem: • A powerful loudspeaker driver with a large opening angle for all frequencies is contradictive by physical laws. 250 Hz è 1 k. Hz Opening angle always decreases with frequency Communications Systems 12 4 k. Hz ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Technology è Solution for a large opening angle for all frequencies • The frequency range is divided in 3 ranges: low, mid & high. • A relative small loudspeaker driver is applied for each frequency range. Communications Systems 13 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Technology è Solution for a high SPL • Combine multiple loudspeakers • Prevent reduction of opening angle by advanced filtering. It looks like a column, but with a large opening angle! Communications Systems 14 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Technology è Compare the radiation pattern @ 2 k. Hz with the LBC 3200 column loudspeaker. Radiation pattern plot from EASE Communications Systems 15 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Unique selling point Full range sound Full range Low & Mid Unique selling point: • Full range sound in a large listening area, in contradiction to competitive products. Low è è No frequency variation in the listening area! Communications Systems 16 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Features è EVAC compliant • Ceramic connector • Thermal fuse • Heat resistant wiring • Provision for installation of supervision board - Separate connector for supervision board Communications Systems 18 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Features Attractive design Communications Systems 19 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Features è A protective treatment is applied, so the product can be applied in tough environments like swimming pools. Communications Systems 20 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Design guidelines This table is in the manual! EXAMPLE Area = 681 m 2 Maximum SPL = 89, 7 d. B Height 10 m Variation in SPL of 9 d. B (with 1 loudspeaker) Communications Systems 21 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Installed projects: Greenpack, The Netherlands è Transfer shipment of Tomatoes è Goal of the system: • Background music for employees è 9 x LS 1 -OC 100 E in the larger halls Loading docks Communications Systems 26 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Installed projects: Greenpack, The Netherlands Loading docks Sorting room è The installation costs where significantly reduced due to the application of the LS 1 -OC 100 E. Communications Systems 27 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Installed projects: Exhibition of Mérida, Spain è Exhibition centre • 3 Halls è Goal of the system: • Speech announcements • BGM è PA system • Praesideo MCI + BAM Communications Systems 28 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Installed projects: Exhibition of Mérida, Spain è Hall 1 • A = 2400 m 2 • 6 x LS 1 -OC 100 E @ h = 13 m è Analysis in empty hall • RT 60 average = 4. 8 s • STIaverage = 0. 48 • SPLaverage = 83 d. B (pink noise) • Excellent sound quality was clearly noticable Communications Systems 29 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.

Installed projects: Exhibition of Mérida, Spain è Hall 3 • A = 1200 m 2 • 2 x LS 1 -OC 100 E @ h = 10. 5 m è Analysis in empty hall • RT 60 average = 3. 3 s • STIaverage = 0. 52 • SPLaverage = 82 d. B (pink noise) • Excellent sound quality was clearly noticable Communications Systems 30 ST-SRO | May 2008 | © Robert Bosch Gmb. H reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.