1
S-660A
Issue 3
(540) 427-3505
S-660A
EXPLOSION PROOF 30 WATT PAGING HORN
INTRODUCTION
The S-660A is a 30 Watt Explosion Proof Paging
Horn for use with any Clarity Mixer Amplifier for
interior as well as exterior paging applications.
The S-660A is a combination 25/70.7 Volt paging
horn.
SPECIFICATIONS
Horn
Power Ratings
30 Watts
Frequency Response
250-12KHz
SPL
108 1W @1 Meter
Dispersion
120
°
X 60
°
Transformer
Power Ratings
70.7 Volts 30 Watts/
25 Volts 15 Watts
Frequency Response
60 - 20 KHz + 1.5dB
Insertion Loss
.5dB
Impedance Secondary
8 Ohms
Terminations
Solder Lugs
Impedance/Volt Ratings
Features
•
Combination 25/70.7 Volt Transformer
•
All metal construction
•
Grey baked epoxy finish
•
1/2 Conduit access
•
Adjustable mounting bracket
INSTALLATION
1. Carefully remove back cover of driver assembly.
2. Install transformer using two (2) 8-32 machine
screws on the back of the magnetic drive unit.
3. Connect secondary transformer solder lugs to
voice coil leads (lugs marked 8S and 0).
4. Connect leads to appropriate transformer primary
solder lugs as designated in Ratings Chart.
5. Feed input leads through 1/2 conduit access hole
into appropriate electrical box.
6. Prior to reinstalling driver cover make certain that
the joining surfaces are free of dirt. Tighten all
cover bolts completely.
NOTE:
No compound of any type is applied on the
machined surfaces.
7. Remove the mounting bracket and mount using
the appropriate hardware.
8. Re-mount horn assembly to bracket.
NOTE:
Follow all applicable regulatory requirements
for installation and cabling in Hazardous
Environments.
947426
Impedance
Ω
70.7 Volts
25 Volts
2775
1.8
--
1350
3.7
--
666
7.5
--
333
15
1.8
167
30
3.7
89
--
7.5
45
--
15
