ATLAS Sound VT/VTF Series Perforated Vent Panels Instruction Manual
- June 9, 2024
- ATLAS Sound
Table of Contents
- FEATURES
- APPLICATIONS
- GENERAL DESCRIPTION
- ENCLOSURES
- ARCHITECT AND ENGINEER SPECIFICATIONS
- VT/VTF SERIES UL WIRING REQUIREMENTS
- VT SERIES UL LISTED
- SURFACE EXTERIOR BACKBOX (SE)
- SEMI-FLUSH PLATE (SFP)
- ADAPTER RING (AR)
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
ATLAS Sound VT/VTF Series Perforated Vent Panels Instruction Manual
FEATURES
- Patented Emergency Loudspeakers Available in 8-Ohm, 70.7V, and 25V Versions
- Units Meet or Exceed UL Standard 1480 for Fire Protective Signaling Systems when Usedwith Compatible Control Equipment
- Durable, Die-Cast, Water-Sealed Housings Withstand Vandalism, Vermin, Moisture, Corrosion, and Vibration
- Easy and Low Cost Installation Via Standard E.O. Boxes
- Choose from Surface or Recessed Models in Red or Neutral Gray Finish
- All Models Produce High Level Output, Optimum Intelligibility, and Effective Dispersion
- Ideal for Reliable Voice/Tone Signaling in Public Area Emergency Communications and Heavy-Duty Industrial Applications
APPLICATIONS
Employ patented, UL Listed Voice/Tone™ audible signaling devices in protective warning and intercom systems, for public area emergency communications, and as communication system loudspeakers in multi-occupancy and extended space areas (i.e., high-rise residences, public buildings, healthcare and educational facilities, shopping areas, athletic clubs, transportation terminals). All units are suitable for stationary or mobile use, indoors or outdoors. High- power, 15-watt models are ideal for use in commercial and heavy-duty industrial applications.
When used with compatible control equipment, VT/VTF Series comply with UL
Standard 1480 (Speakers for Fire Protective Signaling Systems) and California
State Fire Marshal (Title 19). Models with special modifications to meet New
York City MEA (Calendar no. 57-74 SA) and UL Canada are also available as
standard product. Contact factory for proper model designation and price.
VT Series
GENERAL DESCRIPTION
Through proven performance, patented VT/VTF Series have earned worldwide
acclaim for service reliability. These cost-effective units offer compact
size, functional flexibility, optimum intelligibility, effective sound
distribution, and high-level output. All models contain a highefficiency
compression driver with maximum acoustic conversion efficiency. (A quality
which reduces number of units needed to attain specified sound pressure levels
and provides substantial savings in amplification-power requirements and labor
costs.) Die-cast, water-sealed construction withstands vandalism, vermin,
moisture, corrosion, and vibration during indoor or outdoor use. Selection
includes a basic 8-ohm version and 70.7 or 25-volt transformer models with DC
blocking capacitor (C) where noted. All models terminate via barrier strips.
VT Series models are surface-mount units; VTF Series are flush-mount units for
recessed installation. VT Series mounts standard 4″ E.O. Boxes; VTF Series
mount 4″ or 411⁄16″ SQ backboxes and require model AR or MR adapter rings
respectively (order separately) Optional mounting accessories are offered
including: indoor and outdoor enclosures, a bi-directional housing, adapter
plates and rings. Suffix model with color: Red (R) or Neutral Gray (N). Ex:
VT-157UCS.
VTF Series
VT / VTF SERIES ACCESSORIES (ORDER SEPARATELY)
ENCLOSURES
Model SE. Surface-mounting exterior backbox provides weatherproof installation for VT Series loudspeakers. Unit is tapped for 1 ⁄2″ conduit and includes a weatherproof gasket. Dimensions: 41 ⁄4″ SQ x 2″ D (108 x 51mm). Weight is .75 lbs (.35 kg). Housing is die-cast zinc finished in a durable epoxy. Suffix model with color designation: Red (R) or Neutral Gray (N).
Model SI. Surface-mounting indoor backbox for SVT Series models mounts to any single or double-gang backbox for concealed conduit applications. CRS unit includes 1 ⁄2″ conduit knockouts (three on each side; five on rear). Epoxy- finished surface. Dimensions: 4″ SQ x 11 ⁄2″ D (102 x 38mm). Weight is .7 lbs (.3 kg). Suffix model with color designation: Red (R) or Neutral Gray (N).
Model TVTA. Twin housing for bi-directional mounting of two independently
powered VT Series models. Unit is recommended for wall or ceiling installation
in corridors and walkways.
Each unit includes 23 ⁄4″ D (70mm) housing with base and adapter plate for
parallel mounting to any 4″ SQ or single-gang electrical backbox for
distortion-free, bi-directional projection. Weight is 1.5 lbs (.7 kg). Suffix
model with color designation: Red (R) or Neutral Gray (N).
BAFFLE COVER
Model VTC. Baffle cover converts Model TVTA (above) into a uni- directional unit for single loudspeaker installations. Die-cast zinc construction is finished in baked epoxy and is identical to the VT Series loudspeaker housing. Dimensions: 41 ⁄4″ SQ x 17 ⁄8″ D (108mm x 48mm). Weight is .5 lbs (.2 kg). Suffix model with color designation: Red (R) or Neutral Gray (N).
ADAPTER PLATES
Model SFP. Semi-flush adapter plate mounts behind VT Series to cover any recessed 4″ SQ x 11 ⁄2″ D (102mm x 38mm) outlet box. CRS wall plate is stamped and painted. Dimensions: 6″ SQ x 7 ⁄32″ D (152mm x 6mm). Weight is .5 lbs (.2 kg). Suffix model with color designation: Red (R) or Neutral Gray (N).
Model FP. Flush adapter plate for VTF Series loudspeakers allows recessed mounting to standard 411⁄16″ (119mm) backboxes. Unit is also suited to mount solid exterior or hollow interior wall surfaces where a backbox is not required. Weight is .4 lbs (.18 kg). Unit is of CRSstamped construction; not painted.
ADAPTER RINGS
Model AR. Adapter ring for recessed mounting of VTF Series units. Welded steel collar is 4″ SQ x 2″ D (103mm x 51mm) to provide necessary extension for any 4″ SQ x 21 ⁄8″ D (102mm x 54mm) E.O. box. Weight is .6 lbs. (.27 kg). When assembled, the unit is 31 ⁄16″ deep and will fit in a standard 4″ stud wall. Assembly includes four “S” clips. Finished in neutral gray.
Model MR. Overlapping extension ring is equipped with clips for recessed mounting of VTF Series models. Welded steel collar is 411⁄16″ SQ (I.D.) x 2″ D (119mm x 51mm) to provide extension for any 411⁄16″ SQ (O.D.) x 21 ⁄8″ D (119mm x 54mm) backbox. When assembled, the unit is 31 ⁄16″ deep and will fit in a standard 4″ stud wall. Assembly includes four “S” clips. Weight is .7 lbs (.3 kg). Finished in neutral gray
VT/VTF LOUDSPEAKER SPECIFICATIONS
MODEL| TRANSFORMER| POWER TAPS (WATTS)| FREQ.
RESP.| DISPERSION| SENSITIVITY| DIMENSIONS / WEIGHT|
CAPACITOR (C)
VT(F)-158U| *| 15 (8 Ohms)| | > 190°(- 6dB pt., 1 and 2 kHzoctavebands)|
96.9dB(1 watt, 1 meter)
UL: 90dB (1 watt, 10 feet)| VT Series: 4-1/4″ SQ x 3-1/4″ D (108 x
83mm)3.2 Lbs. (1.5 kg) VTF Series: 6″ SQ x 3-1/4″ D (152 x 83mm)3.2 Lbs.
(1.5 kg)| N.A.
VT(F)-157UC| 70.7 V| 15, 8, 4, 2| 600 Hz –| 5 mfd.
VT(F)-152UC| 25 V| 15, 8 ,4 , 2| 5500 Hz| 5 mfd.
VT(F)-27UC| 70.7 V| 2,1| (± 5dB)| 1 mfd.
VT(F)-22UC| 25V| 2,1| | 1 mfd.
VT(F)-17UC| 70.7| 1, 1/2, 1/4| | 1 mfd.
SOUND LEVEL REFERENCE INDEX FOR VT AND VTF SERIES LOUDSPEAKERS (BASED
ON UL RATING OF 90dB AT 1 WATT, 10 FEET)**
DISTANCE| 15-W INPUT| 8-W INPUT| 4-W INPUT| 2-W
INPUT| 1-W INPUT| 1/2-W INPUT| 1/4-W INPUT
10′ (3.0 m)| 102.0dB| 99.0dB| 96.0dB| 93.0dB| 90.0dB| 87.0dB| 84.0dB
20′ (6.1 m)| 96.0dB| 93.0dB| 90.0dB| 87.0dB| 84.0dB| 81.0dB| 78.0dB
30′ (9.1 m)| 92.5dB| 89.5dB| 86.5dB| 83.5dB| 80.5dB| 77.5dB| 74.5dB
40′ (12.2 m)| 90.0dB| 87.0dB| 84.0dB| 81.0dB| 78.0dB| 75.0dB| 72.0dB
50′ (15.2 m)| 87.7dB| 84.7dB| 81.7dB| 78.7dB| 75.7dB| 72.7dB| 69.7dB
Polars Are Normalized to Zero on Axis
VT / VTF SERIES Harmonic Distortion ( 1 watt @ 1 meter )
VT / VTF SERIES FREQUENCY RESPONSE
Dispersion
Freq.| Q| Di| Angle
(Degrees)
---|---|---|---
(Hz)| 1.83| 2.61| 360
1000| 3.09| 4.91| 190
2000| 4.54| 6.57| 125
2000| | |
ARCHITECT AND ENGINEER SPECIFICATIONS
VT/VTF Series. Audible signalling device shall be Atlas Sound Model VT- (surface mount) or VTF- (flush-recessed mount). Continuous power rating shall be (15, 8, 4, 2, 1, 1/2, 1/4 watts) at rated power. Frequency response shall be 600 to 5500 Hz (± 5dB). Sensitivity shall be 96.9dB (at 1 watt, 1 meter). Sound pressure level shall be __ at a distance of __ (see Sound Level Reference Index). Dispersion shall be greater than 190° (-6dB point, 1 and 2 kHz octave bands). Model shall be water/moisture sealed and constructed of die-cast zinc. Unit shall operate within the temperature range of 150°F (66°C) to -30°F (-35°C). VT Series shall be installed in (a standard 4″ SQ E.O. Box, Atlas Sound Model SFP semiflush plate, Model SE surface exterior backbox, or Models TVTA and VTC bi-directional housing and baffle cover). VTF Series shall be installed in a standard __(4″ or 4-11/16″ SQ) backbox using Atlas Sound Model__ (AR, MR) overlapping extension ring. Dimensions shall be: VT Series, 4-1/4″ SQ. x 3-1/4″ D (108 x 83mm); VTF Series, 6″ SQ. x 3-1/4″ D (152 x 83mm). Finish shall be red or neutral gray.
VT/VTF SERIES UL WIRING REQUIREMENTS
NOTE: To conform with UL1480 requirements, wires must be connected to appropriate terminals as shown in the wiring diagram Do NOT use looped wire under terminals. Break wire run to provide for supervision of connection.
**VT/VTF MODELS WITH 2 POSITION TERMINAL STRIP
**
**VT MODELS WITH 3, 4, OR 5 POSITION TERMINAL STRIP
**
VT/VTF-17U VT/VTF-17UC
70V Line Xfmr
| Term | Color | Watt Rating |
|---|---|---|
| 1 | Red | Com – |
| 2 | Blue | 1/4 84 |
| 3 | Yellow | 1/2 87 |
| 4 | White | 1/ 90 |
VT/VTF-22U VT/VTF-22UC
25V Line Xfmr
| Term | Color | Watt Rating |
|---|---|---|
| 1 | Red | Com |
| 2 | Blue | 1 |
| 3 | White | 2 |
VT/VTF-27U VT/VTF-27UC
70V Line Xfmr
| Term | Color | Watt Rating |
|---|---|---|
| 1 | Red | Com |
| 2 | Blue | 1 |
| 3 | White | 2 |
VT/VTF-152U VT/VTF-152UC
25V Line Xfmr
| Term | Color | Watt Rating |
|---|---|---|
| 1 | White | Com |
| 2 | Red | 2 |
| 3 | Gray | 4 |
| 4 | Brno | 8 |
| 5 | Grin | 15 |
VT/VTF-157U VT/VTF-157UC 70V
70 V Line Xfmr
| Term | Color | Watt Rating |
|---|---|---|
| 1 | White | Com |
| 2 | Red | 2 |
| 3 | Gray | 4 |
| 4 | Brno | 8 |
| 5 | Grin | 15 |
VT/VTF-158U
8 ohms
| Term | Color | Watt Rating |
|---|---|---|
| 1 | Black | Com |
| 2 | Yellow | 15 |
* UL 3dB Increment Rating
VT SERIES UL LISTED
VOICE/TONE™ EMERGENCY
**LOUDSPEAKER INSTALLATION
**
*( Backboxes by others )**
**Surface Interior Backbox (SI)
**
SURFACE OR CONCEALED CONDUIT MOUNTING
VT Series with Model SI backbox.
SURFACE EXTERIOR BACKBOX (SE)
WEATHERPROOF MOUNTING
VT Series with Model SE for weatherproof installations.
SEMI-FLUSH PLATE (SFP)
Do not use these five knockouts for connecting conduit (will interfere with
the loudspeaker)
SEMIRECESSED MOUNTING
VT Series with Model SFP installed to any recessed 4″ SQ x 2-1/8″ D backbox*.
BI-DIRECTIONAL HOUSING (TVTA) / BAFFLE COVER (VTC)
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 loudspeaker on one end and a VTC baffle cover on the other.)
VTF SERIES UL LISTED VOICE/TONE™ EMERGENCY LOUDSPEAKER INSTALLATION
*( Backboxes by others.)**
ADAPTER RING (AR)
Do not use these five knockouts for connecting conduit (will interfere with
the loudspeaker)
***** A Standard 2-1/8″ D backbox assembled with overlapping extension ring (AR) is 3-11/16″ Deep
RECESSED MOUNTING OPTION
VTF Series with standard 4″ SQ x 2-1/8″ D backbox* & Model Adapter Ring (AR).
FLUSH MOUNTING PLATE (FP) / ADAPTER RING (MR)
RECESSED MOUNTING OPTIONS
FP Mounting Plate Dimensions
VTF Series with Model FP mounted to solid exterior (or hollow interior) wall
where backbox is not required.
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 loudspeaker alignment.
***** A standard 2-1/8″ D backbox assembled with overlapping extension ring (MR) is 3 11/16″ D.
1601 JACK MCKAY BLVD.
ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: 800-876-3333
FAX 800-765-3435
© 2001 Atlas Sound LP Printed in U.S.A.