Atlas VT-157UCR, VT-152UCR, VT-152UCN, VT-157UCN, VTF-152UCN Brochure & Specs
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Voice / Tone™ Emergency Loudspeakers
15 Watt Compression Driver Loudspeakers
VT Series / VTF Series Patented and the proven performance standard around the world for effective sound and
electronic signal transmission of emergency voice communications and tone signaling. Cost-effective series function
as protective warning devices in intercom systems and as communication system loudspeakers in multi-occupancy
and expanded space areas including high-rise residences, public buildings, health-care and educational facilities,
banks, shopping areas, distribution centers, and transportation terminals. High-efficiency compression driver provides
optimum acoustic conversion efficiency. Die-cast water sealed construction withstands vandalism, vermin, moisture,
corrosion, and vibration.
Both the VT Series and VTF Series include a 70.7V or 25V transformer model. All Models include a 5 mfd capacitor. VT Series are surface mounting units measuring 41⁄4" Square x 31⁄4" Depth. VTF Series are recessed mounting
versions measuring 6" Square x 31⁄4" Depth. Both series install to a 21⁄8" Depth x 4" E.O. Box (not included); VTF Series
also requires Model A-R adapter ring. Models are available with choice of finish Red(R) or Neutral Gray(N). When used
with compatible control equipment all models comply with UL Standard 1480 — Speakers for Fire Protective Signaling
Systems.
Six
Model UL Transformer Power Taps
VT-157UCN
VT-157UCR
VTF-157UCN
VTF-157UCR
VT-152UCN
VT-152UCR
VTF-152UCN
VTF-152UCR
* 3 dB increment rating.
1480 70.7V 2, 4, 8, &
1480 25V 2, 4, 8, &
(Watts)
15 watts
15 watts
Frequency
Response
600 Hz - 5500 Hz
(±5 dB)
Dispersion Sensitivity
>190˚
(-6dB point,
1 and 2 kHz
octave bands)
96.9 dB
(1 W / 1 M)
UL: 90 dB*
(1 W / 1 M)
2 Watt Re-Entrant Cone Loudspeakers
SVT-27UCS Surface mount unit features a cone loudspeaker with integral re-entrant protective dome built into the
housing for environment resistance, optimum power output and high intelligibility. Space-efficient design is recommended for use in demanding localized area emergency communications, electro-acoustic signaling, commercial
sound, and intercom applications 2 watt power handling designed for low ambient areas including executive offices,
condominiums, apartments, dormitory rooms, motel/hotel rooms, hospital suites, and elevator cabs. Includes 70.7V
transformer and 1-mfd DC blocking capacitor. SVT-27UCS is a surface mount 41⁄4" Square x 31⁄8" Deep unit designed
for installation in standard 4" square E.O. Boxes (not included). Weather sealed housing is Noryl® plastic. Neutral Gray
finish. When used with compatible control equipment, SVT Series comply with UL Standard 1480—Speakers for Fire
Protective Signaling.
VT Series
VTF Series
Model Frequency
SVT-27UCS
** 3 dB increment rating.
Response
500 Hz -5000 Hz (±5 dB) >190˚ (-6 dB point, 1 and 2 kHz octave bands) 96.9 dB (1 watt, 1 meter)
800.876.3333
Dispersion Sensitivity
UL: 90 dB (1 watt, 10 ft)**
SVT Series
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Installation Accessories for Voice / Tone™ Loudspeakers
SE Surface-mounting outdoor backbox provides weatherproof installation of VT Series / SVT Series loudspeakers.
41⁄4" Square x 2" Depth housing is die-cast zinc with epoxy finish. Unit is tapped for 1⁄2" conduit and includes weatherproof gasket. Suffix model with choice of color. Red(R) or Neutral Gray(N).
SI Surface-mounting indoor backbox for VT Series / SVT Series loudspeakers mounts to any single or double-gang
backbox for concealed conduit installation. 4" Square x 11⁄2" Depth CRS unit is finished in baked epoxy and includes 1⁄2"
conduit knockouts.
Suffix model with choice of color. Red(R) or Neutral Gray(N).
TVTA
F-P
A-R
M-R
SE
SFP
SFP Semi-flush, 6" Square adapter plate mounts behind VT Series / SVT Series loudspeakers to cover any recessed
4" Square x 21⁄8" Depth outlet box. CRS wall plate is stamped and painted.
Suffix model with choice of color: Red(R) or Neutral Gray(N).
Dimensions: 6" Square x 7⁄32" Depth.
TVTA Twin housing for bi-directional mounting of two independently powered VT Series or SVT Series loudspeak-
ers. Ideal for wall or ceiling installation in corridors and walkways. Each unit includes 23⁄4" deep housing with base and
SI
adapter plate for parallel mounting to any electrical backbox.
Suffix model with choice of color: Red(R) or Neutral Gray(N).
F-P Flush adapter plate for VTF Series loudspeakers provides for recessed mounting to 411⁄16" backboxes or solid
exterior and hollow interior wall surfaces where a backbox is not required. CRS stamped construction.
A-R Adapter ring for recessed mounting of VTF Series loudspeakers. Welded steel collar is 2" deep to provide neces-
sary extension to any 4" Square x 21⁄8" Depth E.O. box. Includes four "S" clips.
Finished in Neutral Gray.
M-R Mounting ring with clips for recessed mounting of VTF Series / SVTF Series loudspeakers. Welded steel ring is
2" deep to provide extension to any 411⁄16" Square x 21⁄8" Depth backbox.
Finished in Neutral Gray.
Note: Accessories are also ideal for application with WPVT Series Weatherproof Intercom Stations (Section 8).
Compression Driver Without Housing or Mounting Plate
VTB Series UL recognized compact high-efficiency Voice / Tone™ compression drivers are designed for custom
installation in high-efficiency industrial communication, intercom, electronic alarm, and monitoring system applications including correctional facilities, transportation vehicles, construction sites, and drive-in menu boards. Models
include integral exponential sound projector to provide reliable sound distribution and optimum intelligibility for the
reproduction of voice and/or electronic tone signals. Die-cast zinc construction with water sealed driver will withstand
moisture, corrosion, vibration, vermin, and vandalism. Models are available with a selection of multi-tap transformers
and are designed to mount a variety of standard or custom housings and face plates to meet installation and application requirements. All VTB Series qualify as a UL 1480 recognized component.
VTB Series
Model Power Taps Frequency Response Sound Level* Dispersion Impedance
VTB-1
VTB-2
VTB-4
VTB-6
* Measured at rated power, 1 meter.
** Built-in 70.7V Transformer May be wired with 25V to provide .25, .5, 1, & 2 watt taps.
*** Built-in 25V Transformer
**** Built-in 70.7V Transformer May be wired with 25V to provide .125 & .25 watt taps.
15 watts
15 watts 107 dB
2, 4, 8, & 15 watts 107 dB
1 & 2 watts 100 dB
400 Hz – 4 kHz
107 dB
150˚
8 Ω
4 Ω
***
***
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