Atlas Sound APT-34AT Manual

Atlas Sound Højttaler APT-34AT

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Side 1/3

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.

TELEPHONE: (800) 876-3333

FAX (800) 765-3435 AtlasSound.com 1/3

APT-34AT

Omni-Purpose® 30-Watt Bi-Directional Loudspeakers

APT-34AT

Features

• Twin Reflex Projectors Provide High Efficiency Bi-di rec tional

Sound Dispersion

• Element Resistant Construction for Indoor or Outdoor Installations

• Built-In 25V, 70.7V, 100V Transformer with Seven-Position, Impedance

Switch for Application Versatility

• Omni-Purpose Mounting Bracket for Positioning Flexibility on Vertical

or Horizontal Planes

• Optional Accessories for Vandalism Protection

Applications

Surface mounting loudspeaker utilizes a single driver and twin pro jec tor

to provide cost-ef fi cient, bi-di rec tional sound dis per sion. En vi ron ment

resistant as sem bly is rec om mended for pag ing, talkback, se cu rity and

tone sig naling in corridors, stair wells, walkways, under eaves and along

building pe rime ters of trans por ta tion platforms, warehouses, loading

docks, parking lots, garages, sports, and recreational facilities.

General Description

Atlas Sound Model APT-34AT is a high-intelligibility loud speaker with

a single compression driver which delivers 30 Watts of power and

175˚ sound dis per sion in opposite directions. It in cor po rates the

ex clu sive Vari-Tap®-control connect center, which features a built-in

25V, 70.7V,100V trans former and a seven-position watts/im ped ance

switch (screwdriver adjustable) with a 45 tap. Model APT-34AT is Ω

environment-resistant and in cludes a protective ter mi nal cover with built-

in cable strain relief for ver sa tile indoor/out door inter com and sig naling

use. The single ad justment Omni-Purpose mounting bracket pro vides

po si tion ing flexi bil ity on conventional surface installations (vertical and

hori zon tal planes) and in cludes pro vi sions for strap-mounting to I-beams

or pillars. Dimensions are 161⁄2" L x 93⁄4" Diameter (419mm x 248mm).

For cable/conduit in stal la tions, Model BX-2A is avail able. APT-34AT is

finished in durable grey epoxy. Weight is 9 lbs.(4.1kg).

Speciﬁcations

Model APT-34AT

Power Rating 30 Watts

Frequency Response 450Hz–12.5kHz (±5dB)

Sensitivity 101dB 1 Watt /1 Meter (avg)

Dispersion Angle 175° (-6dB, 2000 Hz octave band)

Length 161⁄ " (419mm)2

Diameter 93⁄ " (248mm)4

Weight 9 lbs. (4.1kgs)

Finish Baked epoxy

Power Taps

25V .9, 1.8, 3.7, 7.5, 15

70.7V 1.8, 3.7, 7.5, 15, 30

100V 4, 7.7, 15, 30

Driver Protection

The horn loudspeaker should not be operated at frequencies outside the

horn cut-off. It is suggested that any program material be high-passed

at 300Hz with a 6dB per octave filter. This can be done with a low level

filter at the amplifier input or by a series capacitor at each loudspeaker.

Electrolytic capacitors can be used but they must be non-polarized (See

Typical Capacitor Values Chart).

Typical Capacitor Values

8 Driver 25V Line 70V Line 100V LineΩ

70 mfd 30 mfd 4 mfd 2 mfd

Electrolytic capacitors can be used but they must be non-polarized.

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.

TELEPHONE: (800) 876-3333

FAX (800) 765-3435 AtlasSound.com 2/3

Architect and Engineer Speciﬁcations

Loudspeaker shall be bidirectional, twin projector Atlas Sound APT-

34AT or ap proved equal. Full range audio power rating shall be 30

Watts. Frequency re sponse shall be 400Hz –12,500kHz (nominal),

450Hz–12.5kHz (±5dB). Sound pressure level shall be 112dB

(30W/1M), 101dB (1W/1M). Sound dis per sion of the double re-entrant

type dual-exponential bells shall be 175˚ in each di rection. Model

shall have impedance selection via seven position switch including a

45-Ω tap. Power taps shall be available at 0.9, 1.8, 3.7, 7.5, 15 Watts

on 25V line, 2, 3.8, 7.5, 15, and 30 Watts on 70.7V line and 4, 7.7,

15 and 30 Watts on 100V line. For wiring and vandalism protection,

Atlas Sound __________ (Model BX-1A) ar mored cable adapter shall

be avail able where speci fied. Finish shall be grey baked epoxy.

Di mensions shall be 161⁄2" (419mm) long x 93⁄4" (248mm) bell di ameter.

Weight shall be 9 lbs. (4.1kg).

Accessories

BX-2A. Vandal Resistant Cover Plate for Armored Cable and Conduit

Connection. Constructed of Cast Aluminum.

Mounting Flange

9⁄32" Diameter

3 Holes 120°

Apart, On 2.312

Bolt Circle

27⁄ " 8Diameter

1⁄2" Banding Slot

13⁄ "4

Atlas Sound products are designed and tested in our well-equipped research laboratory which contains a fully anechoic chamber, complete analog Bruel & Kjaer

measurement equipment and the TEF 20