Theatre Design & Technology - Spring 1978 - 16

Satisfy yourself that the unit is efficient, has a large enough
reflector and lens.
Is the field smooth, free from ghosts and hot spots?
Does the lamp adjust easily?
Does your problem require a zoom system?
Is there adequate expertise for adjustable field intensity adjustments in your use of the unit?
Do you have a sensitive heat problem?
Is the price right?
Care in the selection of equipment can mean a lifetime of
excellent service coupled with a reasonable price at the time
of purchase. A quick selector chart follows demonstrating the
selection alternatives.D

12. The mechanical features that make the unit easy to
mount. simple to adjust for direction, that make shuttering
easy and secure without pulling out or leaving a spill over the
rear edge, that make lamp adjustment quick and direct, that
make the unit durable and free from rust, all go without any
added comment. Electrical provisions allow no compromise,
they must be the best for the purpose. Relamping should be
easy.
In summary:
Select the spread for the distance of throw and the area to be
covered.
Choose the smallest lamp consistent with the intensity desired.

Spotlight Selection Chart
Central Intensity Required

Degrees of Spread

Intensity Desired-Footcandles

Circle Diameter-Feet
Throw
Feet

6

8

12

15

20

25

50

75

100

(Candela in Thousands)

10
20
30
40
50
60
70
80
90
100

33
17
11
9
7
6
5

Degrees
of Spread
50
40
40
33
30
28
27
24
23
20
18
15
13
12
11
10

9
5

14

10

44
23
15
11
9
8
7
6
5

62
33
23
17
14
11
10
9
8
7

53
28
19
14
11
10
8
7
6
6

74
41
28
21
17
14
12
11
10
9

90
53
37
28
23
19
16
14
13
11

2.5
10
23
40
63
90
123
160
203
250

r

l

K
SC
K
BC
K

-

1355
2457
1357/8
213/092
1355/8

BC - 213/102
K - 1357/10
BC - 213/112
SC-Strand Century
BC-Berkey Colortran
EC-Electro Controls
K -Kliegl

Theatre Design & Technology

7.5
30
68
120
188
270
368
480
608
750

10
40
90
160
250
360
490
640
810
1000

Central Candela-in Thousands
Lamp Watts

Manufacturers'
Catalog Number
SC-2211
BC - 213/052
SC - 2321
EC-7367A
BC - 213/062
zoom
SC - 2331
K - 1355W
EC -7367A
SC - 2337
BC - 213/072

5.0
20
45
80
125
180
245
320
405
500

250
5
NA
7
NA
NA

500
13
12
27
43
19

750
NR
19
38
83
25

1000
NR
28
NR
91
38

16
NA
NA
NA
NA

51
34
65
67
26

69
51
103
101
43

NR
NR
140
141
62

83
119
NA
70
168

125
176
NA
94
250

NR
242
250
144
NR

183
NA
266

331
NA
490

396
410
576

I

NA

I
I

I

NA

I

NA-Not Available
NR-Not Recommended

US ITT ISpring. 1978



Table of Contents for the Digital Edition of Theatre Design & Technology - Spring 1978

Contents
Theatre Design & Technology - Spring 1978 - 1
Theatre Design & Technology - Spring 1978 - 2
Theatre Design & Technology - Spring 1978 - 3
Theatre Design & Technology - Spring 1978 - Contents
Theatre Design & Technology - Spring 1978 - 5
Theatre Design & Technology - Spring 1978 - 6
Theatre Design & Technology - Spring 1978 - 7
Theatre Design & Technology - Spring 1978 - 8
Theatre Design & Technology - Spring 1978 - 9
Theatre Design & Technology - Spring 1978 - 10
Theatre Design & Technology - Spring 1978 - 11
Theatre Design & Technology - Spring 1978 - 12
Theatre Design & Technology - Spring 1978 - 13
Theatre Design & Technology - Spring 1978 - 14
Theatre Design & Technology - Spring 1978 - 15
Theatre Design & Technology - Spring 1978 - 16
Theatre Design & Technology - Spring 1978 - 17
Theatre Design & Technology - Spring 1978 - 18
Theatre Design & Technology - Spring 1978 - 19
Theatre Design & Technology - Spring 1978 - 20
Theatre Design & Technology - Spring 1978 - 21
Theatre Design & Technology - Spring 1978 - 22
Theatre Design & Technology - Spring 1978 - 23
Theatre Design & Technology - Spring 1978 - 24
Theatre Design & Technology - Spring 1978 - 25
Theatre Design & Technology - Spring 1978 - 26
Theatre Design & Technology - Spring 1978 - 27
Theatre Design & Technology - Spring 1978 - 28
Theatre Design & Technology - Spring 1978 - 29
Theatre Design & Technology - Spring 1978 - 30
Theatre Design & Technology - Spring 1978 - 31
Theatre Design & Technology - Spring 1978 - 32
Theatre Design & Technology - Spring 1978 - 33
Theatre Design & Technology - Spring 1978 - 34
Theatre Design & Technology - Spring 1978 - 35
Theatre Design & Technology - Spring 1978 - 36
Theatre Design & Technology - Spring 1978 - 37
Theatre Design & Technology - Spring 1978 - 38
Theatre Design & Technology - Spring 1978 - 39
Theatre Design & Technology - Spring 1978 - 40
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