JBL CBT 50LA-1 2"x8 Line Array Column Loudspeaker Full-Range (White) ลำโพงคอลัมน์ สำหรับงานประกาศ ( Sound Column Loudspeake )

The CBT 50LA-1, with Constant Beamwidth Technology™, represents a breakthrough in pattern control, utilizing analog delay beam-forming and amplitude tapering to accomplish consistent vertical coverage without the narrow vertical beaming and out-of-coverage lobing that are typical of straight form-factor passive column speakers.

Features :

• Patent-pending Constant Beamwidth Technology™ provides constant directivity up to the highest frequencies and reduces out-of-coverage lobing.
• Switchable voicing provides flat response in music mode or mid-range presence peak in speech mode.
• Dynamic SonicGuard™ overload protection
• Built-in 70V/100V transformer, plus 8 ohm direct capability.
• Swivel (pan) / tilt wall bracket included.

Specifications :

• Components : Eight 50 mm
• (2 in) Full-Range
• Frequency Range (-10 dB) : 80 Hz – 20 kHz
• Coverage Pattern : Vertical 20° (1.5 kHz - 16 kHz, ±10°)
• Horizontal 150° (ave, 1 kHz – 4 kHz, ±20°)
• Sensitivity (2.83V@ 1m) : 93 dB (speech mode, 2 kHz - 14 kHz)
• 89 dB (music mode, 300 Hz - 18 kHz)
• Nominal Impedance : 8 ohms
• Power Capacity (8 ohm setting) : 150W (600W peak), 2 hrs
• 100 W (400W peak), 100 hrs
• Max SPL  : Speech mode: 115 dB cont ave (121 peak)
• Music mode : 111 dB cont ave (117 peak)
• 70V/100V Transformer Taps : 60W, 30W, 15W, (7.5W at 70V only), and 8Ω thru, via switch
• Enclosure : Fiberglass reinforced ABS cabinet, painted aluminum grille
• Outdoor Capability : IP-54 rated, per IEC529. UV, moisture and salt-spray resistant
• Colors : Black or White (-WH)
• Insert Points : Ten M6 insert points on back panel.
• Mounting : Included swivel (pan) / tilt wall bracket provides continuously variable +/-80 degree left-right swivel aiming (at no up/down tilt -- see Bracket Guide for maximum swivel range at various up/down tilt angles), continuously adjustable ±15 degree tilt, as well as 5 degree fixed increment points within the range. Ten threaded mounting points located on back panel conform to industry standard rectangular 108 x 51 mm (4.25 x 2.0 in) pattern for OmniMount® 30.0 and other compatible third-party brackets. Threaded mounting points can be utilized for suspension.
• Dimensions (H x W x D) : 528 x 99 x 153 mm
• (20.8 x 3.9 x 6.0 in)
• Net Weight : 4.1 kg (9.0 lb)
• Included Accessories : Swivel (pan) / tilt wall bracket
• Optional Accessories : MTC-PC2 terminal panel cover
• MTC-CBT-FM1 flush-mount low-profile wall-mount bracket 
• MTC-CBT-SMB1 Stand-Mount Bracket for use with 35 mm speaker stand