Atlas IED APX40TN User Manual

© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL2-1602

Specifications subject to change without notice

109

TWO

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: [phone] / FAX [phone]

FEATURES

• Constant-Directivity Loudspeaker Offers Controlled

• Coverage of 60˚ x 40˚ Across a Wide Frequency Range for
Predictable Beamwidth Control

• Choice of 20 and 40 Watt Models Provides Better Output Over

Competitive 15 and 30-Watt Standards

• Triple Lock Horn-to-Base Mounting Method Speeds Installation and

Insures Long-Term Stability

• Rotating Bell Pivots in 15˚ Increments for Exact On-Site Positioning

of Projection Angles Detailed in Acoustic Simulation Programs

• Rear Cap Includes Partially-Captured Screws (No Loose Parts) for

Swing-Open Access to Power Taps and Wire Connections. Cap
Includes Knockout for Conduit Connection

• Sturdy Die-Cast Base Includes Provisions for Flex Conduit and May Be

Mounted to 1-gang, 2-gang, and 4" Square E.O. Boxes, Banded to
Poles or Removed for Easy Retrofit of Existing APSeries Loudspeakers

• Loudspeaker is Molded of High-Impact, Neutral-Grey Polycarbonate

Resin with UV Light Inhibitor Preventing Enbrittlement or Discoloration

• Universal 25/70/100V Transformer Includes a Rotary-Dial Selector

for Easy Tap Identification

• Distinctive Blue Bands Identify Power from a Distance

• Speaker Mounting is Backwards Compatible to AP Series–Simply

Remove Base and Mount to Omni-Purpose

®

Bracket

• Built-in Screen Protects Against Bug Nesting

• Multiple Patents Pending

APPLICATIONS

Atlas Sound, the most respected name in paging loudspeakers, offers
Models APX20TN and APX40TN conservatively-rated, 20-watt and 40­watt, constant-directivity paging loudspeakers for use in public
address or paging applications. They combine constant-directivity with
superior engineering design, achieving extraordinary performance with
quick and easy installation. These constant-directivity loudspeakers
offer exact positioning flexibility with a simple twist of the wrist. The
APX loudspeakers are well-suited for indoor applications including
commercial, light industrial, and large retail/distribution applications
where clear and pleasant indoor paging/communications and security
are required. The speakers are also appropriate for installation in out­door retail, commercial, recreational, and public use areas where
dependable weatherproof performance is needed for communications
and security. The neutral-grey finish compliments most interior or exte­rior surroundings. It may also be painted to match installation guide­lines or cosmetics.

CONSTANT-DIRECTIVITY PAGING LOUDSPEAKERS

TECHNICAL SPECIFICATIONS

Frequency Response: 400-7500 Hz (±6dB)
Power Rating:

Model APX20TN: 20 Watts (continuous)
Model APX40TN: 40 Watts (continuous)

Sensitivity: Model APX20TN

107dB 1 Watt/1 Meter (avg) 500-5000 Hz
118dB 20 Watts/1 Meter (avg) 500-5000 Hz
122dB 20 Watts (peak)

Model APX40TN
107dB 1 Watt/1 Meter (avg) 500-5000 Hz
120dB 40 Watts/1 Meter (avg) 500-5000 Hz
124dB 40 Watts (peak)

Directivity Factor: 14 (2 kHz Octave Band)
Usable Low
Frequency Limit: 350 Hz (see Fig. 3)
Dispersion Angle: 60˚ x 40˚ (+10 degrees)
Transformer: 25/70.7/100V
Voice Coil Diameter: 1.5" (38mm)
Magnet Weight: 8 oz. (.227 kg)
Flux Density: 13,000 Gauss, 1.3 Tesla
Construction: UL94 Polycarbonate resin with UV light

inhibitor added. Loudspeaker mounts to
die-cast zinc base using a triple safety lock.

Finish: Neutral grey
Dimensions: 14

1

⁄2"W x 101⁄4"H x 131⁄4"D

(368 x 260 x 337mm)

Weight: 6 lbs. (2.7kg)

APX20TN
APX40TN

APX20TN

APX20TN / APX40TN Beamwidth

-6dB BEAMWIDTH (DEGREES)

Frequency (Hz)

Specifications subject to change without notice

© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL2-1602

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: [phone] / FAX [phone]

APX20TN / APX40TN Horizontal Polars Are Normalized To Zero On Axis

APX20TN Frequency Response

20 watts

@1 meter

1 watt @ 1 meter

MAGNITUDE (dB)

Frequency (Hz)

Fig. 1

Fig. 3

Fig. 2

APX20TN / APX40TN Vertical Polars Are Normalized To Zero On Axis

APX40TN Frequency Response

40 watts

@1 meter

1 watt @ 1 meter

MAGNITUDE (dB)

Frequency (Hz)

APX20TN / APX40TN (Harmonic Distortion - 2.83 watts @ 1 meter)

MAGNITUDE (dB)

Frequency (Hz)

Fundamental

2nd Harmonic

3rd Harmonic

Fig. 6

Fig. 4

Fig. 5

Specifications subject to change without notice

© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL2-1602

111

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1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: [phone] / FAX [phone]

APX20TN Transformer Power Taps

Switch Impedance Watts Watts Watts

Position (Ohms) @ 25V @ 70.7V @ 100V

1 4,000 - 1.25 2.5
2 2,000 - 2.5 5.0
3 1000 .63 5.0 10.0
4 500 1.25 10.0 20.0
5 333 1.88 15.0 X*
6 250 2.5 20.0 X*
7 125 5.0 X* X*
8 62.5 10.0 X* X*
9 31.3 20.0 X* X*

(*Do Not Use)

APX40TN T ransformer Power T aps

Switch Impedance Watts Watts Watts

Position (Ohms) @ 25V @ 70.7V @ 100V

1 2,000 - 2.5 5.0
2 1,000 .63 5.0 10.0
3 500 1.25 10.0 20.0
4 250 2.5 20.0 40.0
5 167 3.75 30.0 X*
6 125 5.0 40.0 X*
7 62.5 10.0 X* X*
8 31.3 20.0 X* X*
9 15.6 40.0 X* X*

(*Do Not Use)

Cap and base

have a K.O. for

1

⁄2" flex conduit

Wire entrance slot may be enlarged with needle nosed pliers for
larger jacketed cables.

Unique rotary dial identifies
and sets the power taps
on the 25/70/100V Xfmr.

Cap includes partially

captive screws allowing

swing-open access to

connections without

loosing hardware.

Posts and notched barrier provide cable strain relief.

Multi-purpose base
accepts 1-gang, 2-gang or
4" Sq. E.O. Boxes in
recessed, surface, indoor
or outdoor styles.

The base may also be
clamped or band mount­ed to poles or beams,
removed for flush/bulk­head installation, or
removed to retrofit exist­ing speaker installations
with AP Series Omni­Purpose

®

mount.

(See Other Side)

Triple Lock Security

Loudspeaker quickly snap-locks to base to allow easy wiring connec­tions, then secures with screws to withstand weather conditions and
external forces that, traditionally, cause sagging or repositioning of the
loudspeaker bell.

❶ Loudspeaker snap-locks to base sleeve
❷ Snap-lock Plastite

®

type screw secures assembly

❸ Security cap screw-locks base between cap and

speaker with (2) two screws

❸

❸

❷

❶

Rotating Bell

Lets you respond to

specific coverage needs

quickly in precise 15˚

increments. Allows full

360˚ rotation.

1

⁄4" knockouts for flush/

bulkhead mounting.

Fig. 7

Fig. 8

Frequency (dB) Beamwidth

(Degrees)

(Hz) Q Di Horizontal Vertical

500 6 7 120 140
1000 15 12 80 100
2000 26 14 60 60
4000 27 14 60 40
8000 36 16 50 40

Fig. 9

Handy tap

reference

chart

Note: All installation methods should carefully take into consideration

loudspeaker assembly weight and environmental conditions.

Specifications subject to change without notice

© 2001 Atlas Sound LP Printed in U.S.A. 000501 SL2-1602

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: [phone] / FAX [phone]

GENERAL DESCRIPTION

Performance

APX loudspeakers provide consistent beamwidth control in both
horizontal and vertical directions–without guesswork–over a wide
frequency range. This means clear messaging and music with less
speakers and less cost. Models APX20TN and APX40TN offer 20
and 40-watts (respectively) of continuous power handling. They
feature 60˚ x 40˚ (+10 degrees) constant-dispersion pattern across
the controlled frequency band of 1.25-10K (horizontal) and 2-20K
(vertical). The bell rotates in 15-degree increments (through full
360o) for precise projection angles. The frequency range is 400­7500 Hz (+6dB). Model APX20TN offers a peak SPLof 122dB at
rated power and Model APX40TN has a peak SPL of 124dB at
rated power. The loudspeaker’s power rating is easy to recognize
from a distance by the "power stripe" identification band around the
driver assembly. One blue band equates to the 20-watt model and
the 40-watt version displays two bands.

Connections

APX models are equipped with an internal 25/70.7/100-volt trans­former with screw terminal connections made beneath the rear cap.
The cap includes a wire slot and knockout to accommodate various
sizes from 22-ga. to 14-ga. Romex

®

-type* or 1⁄2" flex conduit. Strain
relief service loop options are provided via posts and notched barrier.
Power taps are changed using a unique, screwdriver adjustable
rotary switch with a nine-position dial indicator. The rear cap of an
APX includes partially captured screws (no loose parts to drop). One
screw may be loosened more than the other to allow swing open
access to wire connections and power taps.
*Larger gauge jacket cable can be accommodated by enlarging the
opening with needle nose pliers.

Mounting

Time and labor-saving mounting features make installation of the APX
loudspeaker fast, easy, and economical. Pre-mount the die-cast zinc
base to a standard U.S. 1-gang, 2-gang, or 4" sq. E.O. box. Base also
includes provisions for strap-mounting the loudspeaker to poles or
beams using hose clamps. After the base is secure, the loudspeaker
snap locks to base sleeve for fast and easy wire connection. When
connections are complete, simply insert sleeve screw and tighten the
cap screws which will provide triple-lock security. This triple-lock
mounting method will save installation time and keep the loudspeaker
securely in place during extreme environmental conditions. Mounting
accessories include an APX neutral color base/swivel assembly
(APXBK-N), an APX base in grey (APXB-G), and an APX base only in
neutral (APXB-N). In retrofit applications, if you are replacing Atlas
Sound AP Series speakers, you may use the existing AP base for the
APX Series. Simply unscrew wing nut on the APX to remove base and
mount to AP bracket. (If neutral color AP base is desired, order
XS8200601). Additionally, the bell includes

1

⁄4" knockouts for flush/bulk-

head mounting in a box or to a wall. All installation methods should
carefully take into consideration loudspeaker assembly weight and
environmental conditions.

Construction

Designed and engineered to withstand wind and environmental expo­sure, the loudspeakers are molded of weather-resistant polycarbonate
resin for years of performance reliability. The polycarbonate is com­bined with ultra-violet (UV) light inhibitor which enhances the loud­speaker's durable construction and adds to its longevity by preventing it
from becoming brittle and discolored. APX models are reinforced with
a smooth surface-mating collar which provides extra strength and a
sleek appearance. The loudspeaker features a built-in screen located
in front of the driver to protect against bug nesting. The neutral-gray
units may be painted to match indoor or outdoor environments. Die­cast zinc base is painted to match the loudspeaker. Loudspeaker
dimensions: 14

1

⁄2"W x 101⁄4"H x 131⁄4"D (368 x 260 x 337mm). It weighs

6 lbs. (2.7 kg).

ARCHITECT AND ENGINEER SPECIFICATIONS

Loudspeaker(s) shall be Atlas Sound Model ___________
(APX20TN, APX40TN) or approved equal. Each loudspeaker shall
be a constant-directivity type equipped with an integral compression
driver. Sound-dispersion angle shall be 60 degrees x 40 degrees
(+10 degrees) with a constant-dispersion pattern across the con­trolled frequency band of 1.25-10K (horizontal) and 2-20K (vertical).
The tip of the loudspeaker shall loosen to allow bell to be rotated in
15-degree increments.

Model APX20TN shall have a power-handling capability of 20 watts
continuous and Model APX40TN shall have a power handling capa­bility of 40 watts continuous. Frequency response range shall be
400-7500 Hz (+6dB). SPL for Model APX20TN shall be 118dB
(20W/1M), 107dB (1W/1M) and 122dB peak at 20 watts. APX40TN
shall have a SPL of 120dB (40W/1M), 107dB (1W/1M), and 124dB
peak at 40 watts.

The rear cap of the loudspeaker shall feature partially captured screws
and swing open for access to the transformer with nine-position dial
indicator rotary switch and wire connections. The cap shall include a
slot and a knockout to accommodate connections using 22-ga. to 14­ga. wire or

1

⁄2" flexible conduit. Wiring connections shall be made via

enclosed terminal screws. Model APX20TN shall have impedance
selection of 4000, 2000, 1000, 500, 333, 250, 125, 62.5, 31.3 ohms
and accommodate 25, 70.7, or 100V line. Power taps shall be avail­able at .63, 1.25, 1.88, 2.5, 5.0, 10.0, and 20 watts for 25V line; 1.25,

2.5, 5.0, 10.0, 15.0, and 20.0 watts for 70V line; and 2.5, 5.0, 10, and
20 watts for 100V line. Model APX40TN shall have impedance selec­tion of 2000, 1000, 500, 250, 167, 125, 62.5, 31.3, and 15.6 ohms and
accommodate 25, 70.7, or 100V line. Power taps shall be available at
.63, 1.25, 2.5, 3.75, 5.0, 10.0, 20.0, and 40.0 watts for 25V line; 2.5,

5.0, 10.0, 20.0, 30.0, and 40.0 watts for 70V line; 5.0, 10.0, 20.0, and

40.0 watts for 100V line.
Loudspeakers shall feature a triple safety lock method of attaching to

the base assembly via a snap-lock die-cast sleeve secured by a
sleeve screw and two cap screws. It shall include a smooth surface
mating collar for extra strength. Unit shall include a built-in screen
within the loudspeaker to prevent bug nesting. The base shall be
constructed of die-cast zinc and have provisions for flex conduit and
mounting to a standard 1-gang, 2-gang, or 4" sq. E.O. box, or strap­mounting with hose clamps (by others). Additionally, the bell shall
include

1

⁄4" knockouts for flush/bulkhead mounting in a box or to a

wall. The base shall be powder-painted epoxy to match the loud­speaker and shall be paintable. Model APX20TN shall have one
band around the back assembly to indicate a 20-watt unit and
APX40TN shall feature two bands to indicate a 40-watt version.
Loudspeaker assembly shall be environment-resistant, and construct­ed of heavy-duty, neutral-grey polycarbonate resin combined with
ultra-violet (UV) light inhibitor. Dimensions shall be 14

1

⁄

2"W x 10

1

⁄

4"H x

13

1

⁄4"D (368 x 260 x 337mm). Weight shall be 6 lbs. (2.7 kg).