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Runco LS-HB/LS-HB Ultra Installation/Operation Manual
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Table 3-3 lists the available LS-HB lens options and their associated throw ratios. 
Vertical and Horizontal
Position
Proper placement of the projector relative to the screen will yield a rectangular, 
perfectly-centered image that completely fills the screen.
Ideally, the projector should be positioned perpendicular to the screen and in such a way 
that the lens center is aligned with either the top or bottom edge of the screen area, and 
centered horizontally. See Figure 3-3.
Table 3-3. LS-HB Lens Options and Throw Ratios (Note)
Projector Model
Throw 
Ratio with 
Primary 
Lens Only
Throw Range in 
inches, with 
72.6x40.8-inch 
(1.78:1) Screen
Throw Ratio 
with 
Primary 
Lens and 
Anamorphic 
Lens
Throw Range in 
inches, with 
96x40.8-inch (2.35:1) 
Screen
Minimum Maximum
Minimum Maximum
LS-HB + Standard 
Lens
1.89 – 2.40
137.21
174.24
(n/a)
LS-HB + 
Standard Lens + 
Fixed Anamorphic 
Lens
(n/a)
1.89 – 2.40
181.44
230.40
LS-HB + 
Standard Lens + 
Movable 
Anamorphic Lens
1.89 - 2.40
137.21
174.24
1.42 – 1.80
136.32
172.80
LS-HB + 
Short-Throw 
Primary Lens
1.59 - 1.86
115.43
135.04
(n/a)
LS-HB + 
Short-Throw 
Primary Lens + 
Fixed Anamorphic 
Lens
(n/a)
1.59 - 1.86
152.64
178.56
LS-HB + 
Short-Throw 
Primary Lens + 
Movable 
Anamorphic Lens
1.59 - 1.86
115.43
135.04
1.19 - 1.40
114.24
134.40
LS-HB Ultra
2.40 – 4.00
174.24
290.40
(n/a)
LS-HB Ultra + 
Fixed Anamorphic 
Lens
(n/a)
2.40 – 4.00
230.40
384.00
LS-HB Ultra + 
Movable 
Anamorphic Lens
2.40 – 4.00
174.24
290.40
1.80 – 3.00
172.80
288.00
Note: Due to normal manufacturing variances, throw distance can vary by up to +/- 5 percent from 
these specifications.