ลำโพงคอลัมน์ ยี่ห้อ JBL รุ่น CBT-50LA-1
Constant Beamwidth Technology™ Line Array Column Loudspeaker with Eight 50 mm (2 in) Drivers. With improved mounting bracket for enhanced aiming flexibility.
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
- Drivers: Eight 50 mm(2 in) Full-Range
- Frequency Range (-10dB): 80 Hz – 20 kHz
- Coverage Angle: Vertical 20° (1.5 kHz – 16 kHz, ±10°) Horizontal 150° (ave, 1 kHz – 4 kHz, ±20°)
- Sensitivity: 93 dB (speech mode, 2 kHz – 14 kHz)89 dB (music mode, 300 Hz – 18 kHz)
- Impedance: 8 ohms
- Power Rating: 150W (600W peak), 2 hrs 100 W (400W peak), 100 hrs
- Maximum SPL (1m): Speech mode: 115 dB cont ave (121 peak) Music mode: 111 dB cont ave (117 peak)
- 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-55 rated, per IEC529, when installed with optional MTC-PC2 panel cover. UV, moisture and 200-hr ASTM G85 acid-air/salt-spray resistant.
- Color: 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 coverMTC-CBT-FM1 flush-mount low-profile wall-mount bracket MTC-CBT-SMB1 Stand-Mount Bracket for use with 35 mm speaker stand
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