ALTO
™
Fresnel, PC and profile spotlights
2000 & 2500W
Features
Each model in the Alto range has been designed to provide a
winning combination of performance and controllability to establish
Alto as the obvious lighting solution for the larger venue
q Designed around 2500W CP91 lamp for increased performance
q Range comprises fresnel and PC spot and three variable beam angle
profile spots
q Profile spots incorporate articulated yoke and rotating gate for
enhanced controllability
q All models feature microswitch isolated lamp change system for
improved safety
q Easy to use lamp adjustment on profiles
q Durable yet lightweight construction of pressure die cast and formed
sheet aluminium covers
Alto 20/38
Alto 14/32
Alto 8/16
300mm
545mm
360mm
Alto F
360mm
463mm
300mm
28/30 - 805mm
14/32 - 995mm
8/16 - 1045mm
Alto PC
300mm
360mm
Weights and dimensions
Alto F Alto PC Alto 8/16 Alto 14/32 Alto 20/38
Weight 10.0kg 12.2kg 19.0kg 19.0kg 17.0kg
Packed Weight 12.0kg 13.0kg 18.5kg 18.5kg 17.5kg
Packed Volume 0.10m
3
0.11m
3
0.20m
3
0.20m
3
0.17m
3
STRAND LIGHTING DATA SHEETS
Photometric data
Typical performance based on laboratory readings using CP91 2500W lamp
Alto F: Spot
Distance (m)
Beam Ø
(m)
Illum (lux)
Alto PC: Spot
Distance (m)
Beam Ø
(m)
Illum (lux)
7.5
7.5
Alto F: Flood
20
12.5
10
(m)
7.5
8.1
600
10.8
340
13.6
220
20
1.6
15
1.9
1610
2.6
900
Distance (m)
Beam Ø
Illum (lux)
12.5
10
1.3
2320
3625
-
15
18.7
150
-
-
Alto PC: Flood
20
1.0
15
1.2
2500
1.6
1400
Distance (m)
Beam Ø
(m)
Illum (lux)
7.5
8.5
510
10
11.4
290
12.5
14.2
185
15
17.1
20
-
-
-
12.5
10
0.8
3600
5620
-
To calculate lux levels at any throw distance divide the following factors by the distance squared:
Alto F Alto PC Alto 20/38 Alto 14/32 Alto 8/16
Spot/Narrow 362670 561900 236210 394450 621550
Flood/Wide 34240 28860 90145 135700 292290
e.g. Alto PC at full flood over 12m throw 28860/144 = 200Lux
To calculate beam diameters at any throw distance multiply the throw in metres by the following factors:
Alto F Alto PC Alto 20/38 Alto 14/32 Alto 8/16
Spot/Narrow 0.13 0.08 0.35 0.25 0.14
Flood/Wide 1.25 1.14 0.69 0.57 0.28
e.g. Alto PC at full flood over 12m throw 1.14 x 12 = 13.68m
STRAND LIGHTING DATA SHEETS
Alto 20/38: Narrow (20º)
10
(m)
7.5
3.5
2365
-
Distance (m)
Beam Ø
Illum (lux)
12.5
4.4
1510
15
5.3
1050
20
7.1
600
Alto 20/38: Wide (38º)
10
(m)
7.5
5.2
1600
6.9
900
Distance (m)
Beam Ø
Illum (lux)
12.5
8.6
575
15
10.3
400
20
-
-
Alto 8/16: Narrow (8º)
20
(m)
15
2.8
1560
-
Distance (m)
Beam Ø
Illum (lux)
Alto14/32: Narrow (14º)
12.5
(m)
10
1.8
3945
2.5
2525
Distance (m)
Beam Ø
Illum (lux)
25
3.5
1000
15
3.1
1750
30
4.2
700
20
3.7
1000
35
4.9
500
25
4.9
630
Alto 8/16: Wide (16º)
(m)
15
4.2
1300
5.6
730
Distance (m)
Beam Ø
Illum (lux)
Alto14/32: Wide (32º)
12.5
(m)
10
5.7
870
-
Distance (m)
Beam Ø
Illum (lux)
35
30
25
20
7.0
470
15
7.2
600
8.4
325
8.6
340
-
-
25
20
11.5
-
STRAND LIGHTING DATA SHEETS
Operational features
Lamp Access
Rear catch releases drop down lower covers to give access to slide down lampholder assembly. Power is disconnected when lower covers open.
Focus Adjustment
F & PC:
By rotary control on front and rear of lamphouse
Profiles:
By locking screw handles on side of lens tubes with focus setting indication provided
Lamp Adjustment
Beam distribution on profiles adjusted by rotary control on rear of lamphouse.
Lamp alignment adjusted by screwdriver on rear panel.
Suspension
Alto profiles are fitted with articulated fork to allow steep angles when hung from
pipe. Alto F & PC are fitted with conventional forks.
Ordering information
Alto F & PC are supplied complete with 1.5m and Alto profiles with 3m of
2.5mm2 cable terminated with fitted plug. All Alto spotlights are also supplied with
metal colour frame and CP92 2000W lamp. 240V models come with 15A plug
and 240V lamp. 230V models come with Schuko connector and 230V lamp.
Optional accessories & replacement
Cat No Description
12204 Alto F Mk2, 240V
12203 Alto F Mk2, 230V
12214 Alto PC Mk2, 240V
12213 Alto PC Mk2, 230V
12124 Alto 8/16, 240V CP92
12123 Alto 8/16, 230V CP92
12134 Alto 14/32, 240V CP92
12133 Alto 14/32, 230V CP92
12144 Alto 20/38, 240V CP92
12143 Alto 20/38, 230V CP92
lamps
19112 Barndoor, 4 leaf rotatable
18202 Gobo Holder for ‘A’ size
gobos
18201 Iris, 18 leaf
82011 Hook Clamp, heavy duty
82001 Safety cable, heavy duty
55001 Colour Call Scroller CC1
18203 Additional colour frame, metal
43924 CP91 Lamp 2500W, 3200K,
400Hr - 240V
43923 CP91 Lamp 2500W, 3200K,
400Hr - 230V
43924 Additional CP92 Lamp
2000W, 3200K, 400Hr - 240V
43923 Additional CP92 Lamp
2000W, 3200K, 400Hr - 230V
Accessories
Alto Mk2 F & PC accept a new four
leaf rotating barndoor which will also
fit Mk1 models. Alto profiles incorporate runners to accept a gobo holder
for ‘A’ size gobos or an 18-leaf iris.
All Alto spotlights have colour runners
to take DIN standard 245 x 245 mm
colour frames.
Mechanical/Electrical Data
Construction
Pressure die cast front and rear panels with extruded aluminium tie bars
and formed aluminium cover panels
all finished in two tone grey and black
epoxy powder coating.
Gate/Lenstube
Pressure die cast gate assembly is
rotatable through 220 and houses four
removable beam shaping shutters and
runners for gobo holder or iris.
Lenses
Heat resistant borosilicate lenses. F &
PC lenses mounted in die cast front
panel behind 25mm wire guard.
Profile lenses housed in die cast carriers sliding on bearing rods.
Lampholder
G22 to take lamps of 90 mm LCL and
maximum of 2500W
Supply Voltage
230V +/- 10% 50/60 Hz
Standards compliance
Designed to conform to EN 60 598 2-17
The Company reserves the right to make any variation in design or construction to the equipment described. © Strand Lighting Ltd 1998.
Strand™, Strand Lighting™, Strand Quartzcolor ™ are trade marks of Strand Lighting Limited and Strand Lighting Inc.
Strand Lighting Ltd North Hyde House Hayes Rd Heston Middx UB2 5NL UK Tel: +44 (0)181 571 3588 Fax: +44 (0)181 571 3305
Strand Lighting GmbH Ullsteinstrasse 114-142 D-12109 Berlin Germany Tel: +49 (0) 30/70 79 51 0 Fax: +49 (0) 30/70 79 519 9
Strand Lighting Italia srl Via delle Gardenie 33 00040 Pomezia-Roma Italy Tel: +39 06 9147123 Fax: +39 06 9147136
Strand Lighting Asia Ltd 7/F Corporation Square 8 Lam Lok Street Kowloon Bay Hong Kong Tel: +852 2757 3033 Fax: +852 2757 1767
LONDON - BERLIN - ROME - PARIS - MOSCOW - LOS ANGELES - NEW YORK - TORONTO - HONG KONG
www.strandlighting.com
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