VT/VTF LOUDSPEAKER SPECIFICATIONS

 

 

POWER TAPS

FREQ.

 

 

DIMENSIONS /

CAPACITOR

MODEL

TRANSFORMER

(WATTS)

RESP.

DISPERSION

SENSITIVITY

WEIGHT

(C)

VT(F)-158U

*

15 (8 Ohms)

 

 

96.9dB

VT Series:

N.A.

VT(F)-157UC

70.7 V

15, 8, 4, 2

600 Hz -

> 190°

(1 watt, 1 meter)

4-1/4" SQ x 3-1/4" D (108 x 83mm)

5 mfd.

VT(F)-152UC

25 V

15, 8 ,4 , 2

5500 Hz

(- 6dB pt.,

 

3.2 Lbs. (1.5 kg)

5 mfd.

VT(F)-27UC

70.7 V

2,1

(± 5dB)

1 and 2 kHz

UL: 90dB **

VTF Series:

1 mfd.

VT(F)-22UC

25V

2,1

 

octave

(1 watt, 10 feet)

6" SQ x 3-1/4" D (152 x 83mm)

1 mfd.

VT(F)-17UC

70.7

1, 1/2, 1/4

 

bands)

 

3.2 Lbs. (1.5 kg)

1 mfd.

* Without transformer, 8-ohm impedance. ** 3dB increment rating.

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dispersion

 

 

 

 

 

 

 

 

 

 

Freq.

 

 

 

Angle

 

 

 

 

 

 

 

 

 

 

(Hz)

Q

Di

 

(Degrees)

 

 

 

 

 

 

 

 

 

1000

1.83

2.61

360

 

 

 

 

 

 

 

 

 

2000

3.09

4.91

190

 

 

 

 

 

 

 

 

 

4000

4.54

6.57

125

 

 

 

 

VT / VTF SERIES

 

 

 

 

 

 

 

 

 

 

SIX

 

 

 

 

 

 

 

 

 

 

 

 

 

Polars Are Normalized to Zero on Axis

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VT / VTF SERIES Harmonic Distortion

 

 

VT / VTF SERIES FREQUENCY RESPONSE

 

 

( 1 watt @ 1 meter )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ARCHITECT AND ENGINEER SPECIFICATIONS

VT/VTF Series. Audible signalling device shall be Atlas Sound Model VT-____ (surface mount) or VTF-____ (flush-recessed mount). Con-

tinuous 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 semi-

flush 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.

Specifications subject to change without notice

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: (800) 876-3333 /FAX (800) 765-3435

317

© 2001 Atlas Sound LP

Printed in U.S.A.

000501

SL6-1439

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Atlas Sound Speaker Architect and Engineer Specifications, Resp Dispersion Sensitivity Weight, Distance Input

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