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Specifications subject to change without notice
© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL6-1439
1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: (800) 876-3333 / FAX (800) 765-3435
VTF SERIES
UL LISTED
VOICE/TONE™
EMERGENCY
LOUDSPEAKER
INSTALLATION
SEMI-FLUSH PLATE (SFP)
ADAPTER RING (AR)
BI-DIRECTIONAL HOUSING (TVTA)
/ BAFFLE COVER (VTC)
VT Series with Model SE for
weatherproof installations.
WEATHERPROOF MOUNTING
SEMI-
RECESSED
MOUNTING
VT Series with Model SFP installed
to any recessed 4" SQ x 2-1/8" D backbox*.
RECESSED
MOUNTING
OPTION
VTF Series with
standard 4" SQ x
2-1/8" D backbox*
& Model Adapter
Ring (AR).
( * Backboxes by others.)
BI-DIRECTIONAL MOUNTING
Two independently powered VT units installed into Model
TVTA. Mounts to any 4" SQ or single gang E.O. Box* for
ceiling or wall installations. (To build a uni-directional unit
for single loudspeaker installations, use a VT loudspeak-
er on one end and a VTC baffle cover on the other.)
SURFACE OR CONCEALED
CONDUIT MOUNTING
VT Series with Model SI backbox.
Surface Interior
Backbox (SI)
* AStandard 2-1/8" D backbox assem-
bled with overlapping extension ring
(AR) is 3-11/16" Deep.
Do not use these five knockouts for
connecting conduit (will interfere with
the loudspeaker).
Do not use these five knockouts for connect-
ing conduit (will interfere with the loudspeaker)
3-11/16"
Together
* A standard 2-1/8" D backbox assembled with overlapping extension ring (MR) is 3-11/16" D
.
SURFACE EXTERIOR BACKBOX (SE)
VT/VTF SERIES
UL WIRING REQUIREMENTS
NOTE: To conform with UL1480 requirements,
wires must be connected to appropriate termi-
nals as shown in the wiring diagram
Do NOT use looped wire under terminals.
Break wire run to provide for supervision of
connection.
VT SERIES UL LISTED
VOICE/TONE™ EMERGENCY
LOUDSPEAKER INSTALLATION
( * Backboxes by others )
VT/VTF-17U
VT/VTF-17UC
70V Line Xfmr
VT/VTF-27U
VT/VTF-27UC
70V Line Xfmr
VT/VTF-22U
VT/VTF-22UC
25V Line Xfmr
VT/VTF-157U
VT/VTF-157UC 70V
70 V Line Xfmr
VT/VTF-152U
VT/VTF-152UC
25V Line Xfmr
VT
MODELS
WITH 3, 4,
OR 5
POSITION
TERMINAL
STRIP
Mounting
Screw
VT/VTF
MODELS
WITH 2
POSITION
TERMINAL
STRIP
.
.060
dB
Term Color Watt Rating
*
1 Wht Com -
2 Red 2 90
3 Gry 4 93
4 Brn 8 96
5 Grn 15 99
dB
Term Color Watt Rating
*
1 Wht Com -
2 Red 2 90
3 Gry 4 93
4 Brn 8 96
5 Grn 15 99
dB
Term Color Watt Rating
*
1 Red Com -
2 Blu 1 90
3 Wht 2 93
dB
Term Color Watt Rating
*
1 Red Com -
2 Blu 1 87
3 Wht 2 90
dB
Term Color Watt Rating
*
1 Red Com -
2 Blu 1/4 84
3 Yel 1/2 87
4 Wht 1 90
VT/VTF-158U
8 ohms
dB
Term Color Watt Rating
*
1 Blk Com -
2 Yel 15 96
* UL 3dB Increment Rating
VTF Series with
Model FP
mounted to solid
exterior
(or hollow interi-
or) wall where
backbox is not
required.
FP Mounting Plate
Dimensions
RECESSED MOUNTING OPTIONS
FLUSH MOUNTING PLATE (FP) / ADAPTER RING (MR)
MR
Ext. Ring
Dimensions
VTF Series with standard 4-11/16" SQ x 2-1/8" D backbox* and
overlapping extension ring (MR). Flush plate (FP) required for loud-
speaker alignment.
3-11/16"
Together