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เปิดเมื่อ16/12/2013
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JBL VRX-928LA

เข้าชม 342 | ตอบ 0
 
JBL VRX-928LA
 
  • ราคา : 104,800.00 ฿
  • ยี่ห้อ : JBL
  • รุ่น : VRX-928LA
  • รายละเอียดย่อ :
    ลำโพง 8' Two-Way Line Array Loudspeaker System, 1600W Power Rating, 2.0 kHz Crossover Frequency
    รายละเอียดทั้งหมด :

     

    JBL VRX-928LA ลำโพง 8' Two-Way Line Array Loudspeaker System, 1600W Power Rating, 2.0 kHz Crossover Frequency

    The JBL VRX928LA is a lightweight (28 lb / 13 kg), compact 8' two-way line- array speaker system designed for using in arrays of up to six units. This VRX928LA is the ideal choice when line-array performance is needed but the venue size doesn't call for the very long-throw characteristics of larger line-arrays such as JBL's VERTEC or VRX932LA.

    The Constant Curvature waveguide mounts two compression drivers on a continuous arc. The additional VRX928LA speakers are added to the array the uninterrupted arc continues. In effect, all the drivers work together as if they were a single driver on a very long waveguide. Since there are two HF drivers in each VRX928LA, the combined power handling and acoustic output of the system is far greater than a single driver could achieve.

    The VRX928LA uses 'amplitude shading' to shape the coverage of the array. Switches on the input plate allow, for example, the upper box in an array to reach the distant rear of a room while the lower box is shaded back to reduce excessive level at the front of the listening area.

    One or two VRX928LAs may also be used on a tripod or over the VRX915S subwoofer. The integral rigging hardware is used to securely lock the array together. As many as six VRX928LA speaker systems may be suspended in a single array for a nominal vertical coverage of up to 90Deg. Suspended applications require the JBL VRX928LA-SMAF array frame (available separately). For applications in which the array must be aimed sharply down, a second Array Frame may be installed to the bottom of the array serving as a pull-back.

    Features

     

    • JBL's exclusive neodymium magnet Differential Drive woofer for high-power capacity and lightweight
    • Two patent-pending neodymium HF compression drivers
    • Constant Curvature waveguide for unprecedented array coherence
    • Fly combinations of VRX928LA and Subwoofers (VRX915S) with optional array frame (VRX-SMAF)
    • Integral rigging hardware for simple connection of enclosures and optional array frame. Arrays of up to six enclosures may be flown
    • Dual angle pole socket for aiming flexibility. One or two speakers may be mounted to a 35 mm pole or tripod stand
    • Array Configuration Selector permits 'array shading' in passive mode

    Specs

    Frequency Range (-10 dB) 70 Hz -20 kHz
    Frequency Response (±3 dB) 87 Hz - 19 kHz
    Coverage Pattern 100Deg. x 15Deg. nominal (horizontal x vertical), single unit
    Crossover Modes Bi-amp / passive, externally switchable
    Crossover Frequency 2.0 kHz
    Power Rating Continuous / Program / Peak:
    400 W / 800 W / 1600 W
    Bi-amp LF: 400 W / 800 W / 1600 W
    Bi-amp HF: 130 W / 60 W / 120 W
    System Maximum SPL 122 dB SPL peak (passive mode)
    LF: 122 dB (bi-amp mode)
    HF: 128 dB (bi-amp mode)
    System Sensitivity (1w @ 1m) 90 dB SPL (passive mode)
    LF: 90 dB (bi-amp mode)
    HF: 108 dB (bi-amp mode)
    LF Driver 1 x JBL 2168H-1, 200 mm (8 in) Differential Drive woofer
    HF Driver 2 x JBL 2414H, 25 mm (1.0 in) neodymium compression driver
    Nominal Impedance Passive: 18 ohms
    Bi-amp LF: 18 ohms
    Bi-amp HF: 16 ohms
    Enclosure 15 mm - 25 mm, multi-ply birch plywood
    Suspension / Mounting Dual 36 mm pole socket included. Suspension requires optional VRX-SMAF line array frame kit or M10 eyebolts
    Carrying Option Integrated handle with backing cup
    Grille Powder coated, black, 18 gauge perforated steel with acoustically transparent black foam backing
    Input Connectors Neutrik Speak on NL-4 (x2)
    Dimensions (H x W x D) 230 mm x 419 mm x 267 mm (9.0 in x 16.5 in x 10.5 in)
    Weight 12.7 kg (28 lb)
     
 
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