Valcom V-5335001, V-5335005, V-5335010 Service Manual
PagePac
®
by
35 WATT, 70 VOLT ATTENUATOR (V-5335005)
75 WATT, 70 VOLT ATTENUATOR (V-5335001)
3 W ATT, VOICE-COIL 3.4V ATTENUATOR (V-5335010)
INTRODUCTION
A 70 Vo lt attenuator may be installed to cont rol the
volume of a single speaker or of a group of speakers. It can adjust the speaker output from no output up to the maximum output selected by the
speaker power taps.
The Voice-Coil attenuator is used to control the
volume of both cone and horn type voice-coil
speakers (3.4 Volts).
35 Watt 75 Watt 3 Watt
SPECIFICATIONS
FEATURES
• The 35-Watt model is single-gang construction,
and the 75-Watt model is dual-gang construction. When installing the attenuators, the
included deep electrical outlet box must be
used. A standard depth box will not work.
• Voice-coil attenuators are provided in a deep,
one-gang electrical outlet box. When installing
the gang box and mounting the attenuator in the
box, standard industry practices should be followed.
Nominal Specifications
• The 70 Volt attenuators consist of a n auto-transformer and a 10-position switch mounted on a
steel plate. Two different 70 Volt attenuators are
available: 35 Watt and 75 Watt (see Table 1).
Dimensions/Weight
• 35 Watt Attenuator
4.5”H x 2.75”W x 2.25”D
(11.43cm x 6.99cm x 5.72cm)
1.0 lbs.(.45 kg)
• 75 Watt Attenuator
4.5”H x 4.5”W x 2.5”D
(11.43cm x 11.43cm x 6.35cm)
1.0 lbs.(.45 kg)
• 3 Watt Attenuator
4.5”H x 2.75”W x 3.0”D
(11.43cm x 6.99cm x 7.62cm)
.89 lbs. (.40 kg)
INSTALLATION
70 Volt Attenuator
A 70 V olt attenuator must have a power rat ing that
is greater than the sum of all output s f rom the i ndividual speakers it controls. For example, if an
attenuator is controlli ng 3 horn speaker s and each
has an output of 5 Watts, the attenuator rating
must exceed 15 Watt s (5 + 5 + 5). In this case, the
35-Watt model would be used (see Table 1).
Voice-Coil Attenuator
There is a limit to the number of speakers that
may be controlled by a single attenuator. As a
general rule, the limit is 12 cone-type or 3 horntype speakers per attenuator. When using both
horn and cone speakers on a single speaker run,
for the purpose of calculating maximum load per
attenuator, each horn-type speaker is worth 4
cone types (3 Watts maximum load).
See Figure 1 for wire connections between the
amplifier equipment, the speaker(s) and 70 Volt
attenuator.
Issue 2
1947171
TECHNICAL ASSISTANCE
1
2
3
4
5
6
7
8
9
10
0
OUTPUT
FROM AMPLIFIER
RED
GREEN
BLACK
NOTE: USE "B" CRIMP-TYPE
CONNECTORS FOR TW0
WIRES (PROVIDED)
HORN SPEAKER
VOICE-COIL AND
70V ATTENUATORS
NOTE: USE WIRE NUT CONNECTORS
FOR THREE OR MORE WIRES (PROVIDED)
When calling, have a VOM and a telephone test
set available and call from the job site. Call (540)
427-3900 and ask for PagePac Technical Support, or call (540) 427-6000 for Valcom 24-hour
Automated Support or visit our websites at
http://www.pagepac.com and www.valcom.com.
Should repairs be necessary, attach a tag to the
unit clearly stating company name, address,
phone number , contact person, and the nature of
the problem. Send the unit to:
Valcom, Inc.
PagePac
5614 Hollins Road
Roanoke, VA 24019-5056
®
Repair Dept.
FIGURE 1
Part Number V-5335010 V-5335005 V-5335001
Power Rating 3 Watts 35 Watts 75 Watts
Type Positions Auto-Trans 10 Auto-Trans 10 Auto-Trans 10
Attenuation Per Step N/A 3 dB 3 dB
Total Attenuation N/A 30 dB 30 dB
Insertion Loss N/A 0.6 dB 0.6 dB
Mounting Plate 1-gang 1-gang 2-gang
Table 1: Attenuator Specifications (70 volt)
2947171
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