User manual ELECTRO-VOICE 448 DATASHEET
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Manual abstract: user guide ELECTRO-VOICE 448DATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] Four application-specific enclosures--Xvls, Xvlt, Xfil, and Xsub--compose the EV X-LineTM system. Each represents a no-compromise approach that recognizes the extreme performance requirements and level-independent integrity demanded not just by line arrays, but also by many other contemporary sound reinforcement designs.
rectangular design allows up to four Xvls cabinets at once to be dropped onto the X-LineTM R-dolly and raised or lowered in a single cell (see Figure 1-2). The easy dolly loading and cabinet geometry make possible not only very rapid venue load-in and load-out, but also one-person aiming of individual cabinets.
Xvls on dolly (side view)
Primary Enclosures: Xvls and Xvlt
In the two primary enclosures--the Xvls and Xvlt-- the transducer components are identical, but the directional specifications differ. The Xvls, a fully rectangular cabinet with a horizontal included angle of 90 degrees (see Figure 1-1), is designed for the upper or very long throw portions of the X-LineTM system. [. . . ] Internal to the
Special Safety Notes
Rear Hinge Safety Note Both the Xvhg grid hinges and Xvhl linking hinges must be installed in the enclosures so that, when locked in position, the base of the hinge is located in the track at the outside of the enclosure with the locking knobs toward the center as shown in Figure 3. If the hinges are installed backwards, the structural strength is significantly decreased and an
Rev. 2--5. 01 Copyright © 2001 Telex Communications, Inc.
(Xvlt) and rectangular enclosure (either Xvls or Xsub) are pulled up tight with their sides parallel, a 3° relative angle exists between the enclosures. 21) shows all of the possible combinations of rigging attachment locations and linking strap lengths.
unsafe condition will exist. Before suspending any X-LineTM enclosure overhead, the operator must always check to make sure that the hinges are installed in the correct orientation and that the locking pins are fully engaged in the track. Front Strap Safety Note Before suspending any X-LineTM enclosure overhead, the operator must always check to make sure that the Xvsg and Xvsl front strap fittings are securely installed in the track and that the fitting locking pins are fully engaged in the track.
Rigging an Array Using Boxes with Dollies
Two dollies are available for transporting the XLineTM loudspeaker systems. The actual array rigging technique will vary depending on which dolly is used. A bottom dolly can be used with the rectangular loudspeaker enclosures (either Xvls or Xsub). Up to four loudspeaker systems can be stacked on top of a single bottom dolly. The loudspeakers all are sitting upright, just like they would be arrayed. These dollies have sufficient clearance to allow the enclosures to travel with both the front and rear rigging hardware attached to the loudspeaker systems. Installing the hinges backwards will result in significantly reduced structural strength.
Figure 5-2: X-LineTM External Rigging Hardware
A B A B
Figure 5-4: Rigging an Array Using Boxes with Bottom Dollies
"A-A" Xvsl linking strap
A B A B
"B-B " Xvsl linking strap
The Xvsl front linking strap is used to link one box to another. The Xvsl front rigging strap may be adjusted for two different lengths. There are two holes in the fittings labeled "A" and "B". The chain is secured to the fitting by a pin inserted into one of those holes. To change the length of the rigging strap, remove the circular cotter pin, and pull it out of the fitting and chain. Next, move the pin and chain to the new hole and install the circular cotter pin. With the chain secured in the "A-A" positions, the vertical angles of the boxes may be adjusted for even angles (0°, 2°, 4°, 6°, etc. ). With the chain secured in the "B-B" positions, the vertical angles of the boxes may be adjusted for odd angles (1°, 3°, 5°, 7°, etc. ).
The Xvhl rear linking hinge is used for linking two boxes together. Two are required for each box.
The Xvhg rear grid hinge is used for securing the top box to the grid. Two are required for each box.
The Xvsg front grid strap is used for securing the top box to the grid. There is no reason to adjust the length of this strap.
Step 1: Roll stack of boxes into position and attach the top box to the grid using two grid straps at the front and two grid hinges at the rear. [. . . ] Programmer & Date: 1st/Last Rev DEC: 01/23/01 - DEC: 07/09/01
Xxxx Xsub Frequency Band Input Input Connector A B Input Routing Digital Gain (dB) +0. 0 dB +0. 0 dB Signal Delay (mSec) 5. 000 mS 0. 000 mS Polarity (Norm/Inv) HP Frequency (Hz) HP Resp (Type, dB/Oct) HP Q (-) or Boost (dB) LP Frequency (Hz) LP Resp (Type, dB/Oct) LP Q (-) or Boost (dB) Filter 1 Type Filter 1 Freq. (Hz) Filter 1 Gain (dB) Filter 1 BW (Oct) Filter 1 Q (Q) Filter 1 Slope (dB/Oct) Filter 2 Type Filter 2 Freq. (Hz) Filter 2 Gain (dB) Filter 2 BW (Oct) Filter 2 Q (Q) Filter 2 Slope (dB/Oct) Filter 3 Type Filter 3 Freq. (Hz) Filter 3 Gain (dB) Filter 3 BW (Oct) Filter 3 Q (Q) Filter 3 Slope (dB/Oct) Filter 4 Type Filter 4 Freq. [. . . ]
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