XLA.3200: An Advanced Line Array for Extended Listening Area

2. Commercial presentation XLA 3200 • Introduction • Acoustics • XLA 3200 • Characteristics • A family of solutions • A revolutionary new Angle • Cost Saving Spiral • Applications

3. Introduction • For 25 years the Cardiod range has been very successful for LoB communication. • The next generation of ‘column’ loudspeakers • The line array • Advanced acoustics for a larger listening area

4. Acoustics Acoustique Acústicas Acustica Acústica Acoustics • Sound is a pressure wave travelling @ 1240 km/h (dry ambient air) • To cross 22 meters takes 64 milliseconds • The loudness is expressed in Sound Pressure Level (SPL) • Decibels (dB’s) • Differences from 3 dB onwards are audible • Sound reflects off surfaces or is absorbed • All is frequency dependent !

5. Basic Acoustic Requirements • Clarity of Speech and Music • Intelligibility • Sound @ the same volume • Uniform SPL throughout the listening area • Natural sound • Constant Directivity • As Less sound as possible beyond the Listening Area • Directivity • Listening Comfort • Minimized Reverberation

6. Speech Intelligibility Intelligibilité de la parole Inteligibilidad de Palabra Sprachverständlichkeit Intellegibilità del parlato Inteligibilidade da Palavra Speech Intelligibility • Important Frequency Range 1500 – 4200 Hz • Expressed in STI, RASTI, Alcons • Direct Sound / Reverberant Ratio is Critical

7. Direct Sound / Reverberant Ratio • All Direct Sound and Early Reflections received within 50ms increase Intelligibility (max 20m path difference) • Late Reflections compromise Intelligibility • High Reverberant Sound Level compromises Intelligibility Impulse response of reverberant room

8. Reverberation Réverbération Reverberancia Reverberante Riverbero Diffusschall Reverberation • Characteristic of Venues • Reverberation Time > 2s  Reverberant Room • Reflections • Background Noise • Multiple Sources Reverberant Sound Level

9. Line Array Loudspeaker Colonne acoustique Conjunto lineal de altavoces Coluna de Altifalantes Diffusore a sequenza lineare Line Array Loudspeaker • Beaming of sound to the listening area • Less Reverberation • Longer throw • Fewer speakers required But Difficult • To get the same sound pressure level in the listening area • To include all relevant freq’s • Constant Directivity • To avoid unwanted Interference effects

10. Lobe with softer sound but listener is closer Listening Area Line Array Basics • Intersection of beam with the listening area • Same loudness in the whole area • Beam is different per frequency • For all relevant frequencies  Constant Directivity So less attenuation  equal SPL reaches the ear

11. 80m 40m Point source in dB SPL (A) 80m 40m Line array in dB SPL (A) “Throw” or Reach Portée d’un haut-parleur Alcance del altavoz Bereich Perto do Altifalante Attraverso o in prossimità “Throw” or Reach • Thru interference of the individual sources a longer throw • 3 dB vs 6 dB per doubling distance

12. Constant Directivity Directivité constante Directividad Constante Frequenzunabhängig / einheitlich Directividade Constante Direttività costante Constant Directivity • The longer the array, the more beaming • Desirable for beaming of low frequencies • High Frequency beam becomes too narrow • Observe the undesired interference side-effects • Side & Grating lobes Cross-sections of a 1m20 line array of 8 sources, ie vertical opening angle 125 Hz 250 Hz 500 Hz 1000 Hz Cross-section of a 2m40 line array of 8 sources 250 Hz

13. XLA 3200 eXtended Listening Area

14. Larger Listening Area Zone d’écoute importante Área grande de escucha Più larga area di ascolto Grande Área de Audição Larger Listening Area through advanced acoustics • Rethinking Line Array Technology * • Each driver emits dedicated frequency range • Advanced positioning for beaming of low frequencies • For Better Directivity • State-of-the-art drivers • Powerful • Reliable • Natural Sound * Patent Pending

15. Advanced Filtering and Driver Spacing • The whole array for low frequencies • Excellent beaming of sound • Middle drivers for high frequency • Powerful yet wide opening angle • Asymmetrical Main Lobe • Maximized Listening Area • Less reflections off the ceiling • Minimized Side Lobes

16. 80o, 250 Hz -6dB, 1kHz -6dB, 4kHz 20o, 4kHz 55o, 1kHz Advanced Filtering and Driver Spacing • Low Frequencies • High Frequencies Acoustic Center Values LBC 3201/00

17. Advanced Filtering and Driver Spacing • Asymmetrical directivity • Side lobe suppression -6dB, 1kHz -6dB, 4kHz Values LBC 3201/00

18. Acoustical Characteristics- Continued • Wide horizontal Opening angle • 140o @ 4 kHz • (LBC 3201) • High Efficiency • Up to 97 dB SPL (@ 1W, 1m) • (LBC 3210)

19. Conclusion - eXtended Listening Area • Remarkably clear, natural sound for better intelligibility of speech and music • Greater coverage - reaching more people with perceptual perfect sound • Uniform sound distribution throughout the listening area: • not too loud at the front, not too quiet at the back, • all relevant frequencies everywhere

20. Voice evacuation compliant as standard • Complies with IEC 60849 and BS 5839 part 8 • Ceramic terminal block, thermal fuse and heat-resistant, high-temperature wiring • In the event of a fire, damage to the loudspeaker does not result in failure of the 100V circuit to which it is connected.

21. A family of solutions 3201 • LBC 3210 • 90/60 W rated power • Excellent directivity and high power output • Indoor and outdoor • LBC 3201 • 90/60 W rated power • Offers extremely accurate directivity • and side lobe suppression • LBC 3200 • 45/30 W rated power • Superb size/performance ratio Bracket Included 3210 3200 60 cm 1.20 m 8 cm 8 cm 16 cm

22. 3200 3201 & 3210 Throw XLA 3200 3210 outdoor 0m 25m

23. Presentation XLA 3200 A touch of high technology elegance • Silver Grille • Extruded Aluminum housing • Ultra Slim Line • Elegant • Unobtrusive

24. Indoor and OutdoorFrom Canteens to Passenger Terminals Congress Centers

25. A revolutionary new angle • Simple 2-step installation procedure • A chart is supplied that shows • the installation height for required listening area • simply install at angle marked on bracket • 100V loudspeaker line compatible • Smart bracket suited for M10 floor stand without extra accessories • Ease support Mark

26. Cost saving spiral Speaker Larger area per Less battery Less amplifier Less speakers power save on equipment & Installation

27. Applications • Passenger Terminals • Places of Worship, Historic halls, … • Congress centers, Houses of Parliament • Auditoriums, Atriums, Acoustically difficult rooms • (Indoor) Sport Stadiums Any place with a need for superb sound, excellent speech Intelligibility and Voice Evacuation Compliant

28. Passenger Terminals • Bus, Metro, Train, Airports • Background Noise (noise sensing) • Excellent Speech Intelligibility • Large listening area • Part of Voice Evacuation system Applications (1/2) • Places of Worship • Mosques, Churches, Temples • Excellent speech Intelligibility • Music Clarity • Acoustically challenging • Great Listening • Live Speech, High gain before feedback

29. (Outdoor) Recreational Areas • Tennis courts, swimming pools • Excellent Speech Intelligibility • Power, Large listening area, outdoors • Music • Weather proof Applications (2/2) • Congress Centers • Hotels, Conference centers, houses of parliament, universities • Excellent speech Intelligibility • Integration with conference system • Live Speech, High gain before feedback • Temporarily (SR) application • Part of Voice Evacuation

30. Advanced Acoustics for alarger listening area • Remarkably clear, natural sound for better intelligibility of speech and music • Greater coverage - reaching more people with perceptual perfect sound • Uniform sound distribution throughout the listening area: • not too loud at the front, not too quiet at the back, • all relevant frequencies everywhere