Telex ELECTRO-VOICE X-Line TM manual Enclosure Vertical Angle Adjustments, Electro-Voice

The rigging straps are shipped from the factory with chain connected in the “A” position on the fittings on both ends. (This would be denoted as an “A-A” length.) When the chain is connected in the “B” position on both fittings (known as the “B-B” length), the strap is 0.50 inches longer than when connected in the “A-A” position. This 0.50-inch change in length results in a 1°-angle adjustment. When the chain is connected in the “A” position on one fitting and the “B” position on the other fitting (known as the “A-B” length), the strap is 0.25 inches longer than when connected in the “A-A” position. This 0.25-inch change in length results in a 0.5°-angle adjustment. Thus, by adjusting the length of the straps and selecting their attachment position on the enclosure front track, the relative angles between boxes can be adjusted in 0.5° increments. When used with the “A-A” length, even-numbered angles result (0°, 2°, 4°, 6°, etc.) when changing the attachment position of the strap along the track, while odd-numbered angles result (1°, 3°, 5°, 7°, etc.) when used with the “B-B” length. With “A-B” length, in between angles are achievable (0.5°, 2.5°, 4.5°, etc.).

When planning angle adjustments between boxes, the shape of the enclosure must be taken into account. Two rectangular enclosures (Xvls, Xsub,Xfil) can be pulled up tight with their sides parallel, a 0° relative aiming angle exists between the enclosures (i.e., both are facing straight ahead and the sound from both is aimed straight ahead). When two trapezoidal enclosures (Xvlt only) are pulled up tight with their sides parallel, a 5° relative aiming angle exists between the enclosures (because the enclosure shape is a 5° wedge, the sound from both is aimed 5° apart). When a trapezoidal enclosure (Xvlt) and rectangular enclosure (Xvls, Xsub, Xfil1 or Xfil2) are pulled up tight with their sides parallel, a 2.5° relative aiming angle exists between the enclosures.

Figure 8 shows all of the possible combinations of rigging attachment locations and linking strap lengths. When designing an array using the X-Line modeling software, the program will automatically tell you what each front strap length is required (A-A, A-B or B-B) and at what position on the rigging they should be attached for each enclosure.

Rectangular Box (Xvls or Xsub) to

Rectangular Box (Xvls or Xsub)

Angle	Front Chain	Holes Showing
Between		In Front
	Configuration
Boxes		Rigging
0.0°	A-A	0
0.5°	A-B	0
1.0°	B-B	0
2.0°	A-A	1
2.5°	A-B	1
3.0°	B-B	1
4.0°	A-A	2
4.5°	A-B	2
5.0°	B-B	2
6.0°	A-A	3
6.5°	A-B	3
7.0°	B-B	3

Note: Accoustic gaps will occur with angles greater than 5.0° between Xvls systems.

Rectangular Box (Xvls or Xsub) to

Trapezoidal Box (Xvlt)

Angle	Front Chain	Holes Showing
Between		In Front
	Configuration
Boxes		Rigging
2.5°	A-B	0
3.0°	B-B	0
4.0°	A-A	1
4.5°	A-B	1
5.0°	B-B	1
6.0°	A-A	2
6.5°	A-B	2
7.0°	B-B	2
8.0°	A-A	3
8.5°	A-B	3

Note: Accoustic gaps will occur with angles greater than 6.5° between Xvls & Xvlt systems.

Figure 8:

	Trapezoidal Box (Xvlt) to
	Trapezoidal Box (Xvlt)
Angle		Front Chain	Holes Showing
Between				In Front
		Configuration
Boxes				Rigging
5.0°		B-B		0
6.0°		A-A		0
6.5°		A-B		0
7.0°		B-B		1
8.0°		A-A		1
8.5°		A-B		1
9.0°		B-B		2
10.0°		A-A		2
10.5°		A-B		2

Note: Accoustic gaps will occur with angles greater than 8.5° between Xvlt Systems.

Enclosure Vertical Angle Adjustments

ELECTRO-VOICE®￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿ 20