JBL VRX932LAP Spec Sheet EN - Page 2

᭤ VRX932LAP 12" Two-Way Powered Line Array Loudspeaker System Block Diagram Array Configuration Selector (ACS) Amplitude shading is a technique that allows the coverage pattern of a loudspeaker array to be shaped by adjusting the relative acoustic output of some of the devices in the array. Most often, array shading involves only the mid and high-frequency sections of the array. In a simple system consisting of three VRX932LAP's, the lower speaker (which covers the nearest listeners) may have its high-frequency output reduced. At the same time, the upper speaker may have its high frequency output increased. The overall sound-power in the room is unchanged but the distribution of acoustic energy to the audience is far more uniform. The -3 dB position of the HF output level selector will typically be used for the speaker(s) in an array that are covering the nearest listening area. The +3 dB position will be used for the speaker(s) covering the more distant areas, or to compensate for the low-frequency build-up resulting from mutual coupling of multiple woofers in an array. For single speaker applications the -3 dB HF-output level is recommended for best tonal balance. AUDIO OUT AUDIO IN Array Configuration Selector HF OUTPUT LEVEL -3dB 0dB +3dB PUSH VRX932LAP Serial No. ATTENUATION JBL DrivePack ® DPC-2 system Equipped with Differential Drive® Transducer Technology. U.S. PATENTS: 5,748,760; 6,768,806; 6,847,726; 6,774,510; and D483,743. -16dB 0dB PWR SIG PEAK AC LOOP OUTPUT 100-120/220-240V~ 50/60Hz 7A 840W CLASS 1 WIRING AC LINE INPUT 100-120/220-240V~ 50/60 Hz 5A 600W 12A 1440W MAX Designed, Engineered and Assembled in USA LINE SELECT RESET N 108 VRX-AF Array Frame Accessory The VRX-AF is an array frame kit designed to be used for suspension of the VRX932LAP line array loudspeaker. The optional array frame kit includes an array frame, four quick release pins, a pair of forged 3/8" shackles, and a pair of drop levers. The following table defines the maximum number of speakers that may be suspended using the VRX-AF. A minimum design factor of 7:1 is maintained for all speakers configuration at or below those indicated in the table: Maximum number of VRX918SP in array: 0 2 3 3 4 4 Maximum number of VRX932LAP in array: 5 4 3 2 1 0 For some applications, it may be necessary to pull back the array from the bottom in order to achieve the desired coverage. Every VRX-AF is supplied with a spare set of quick release pins and a pair of spare drop levers that are used to adapt a second array frame to the bottom of a VRX932LAP array. Once these are installed on the bottom enclosure, the array frame may be attached as previously described. Ground-Stacked, Upward Firing Arrays: Applications such as covering stadium bleachers from the playing field may be addressed by installing the VRX-AF array frame to the bottom of the array as described above. Up to four VRX932LAP loudspeakers may be locked together and ground stacked using the VRX-AF array frame kit, as shown.