Atlas IED AT10, AT10-PA, AT10-PARM, AT10-RM, AT100-ATLAS Installation Manual

Commercial Attenuators

AT Series, E408 Series

Features

• Models Feature a Range of Attenuation Steps (1.5dB or 3dB Steps) as
Well as Continuous to Meet Application and Budget Requirements

• Wall Plates are Stainless Steel with Stamped and Filled or Screen Printed
Dial Scale, and a Skirted Black Knob (White and Ivory Plastic Plates with
Matching Skirted Knobs Also Available in Decora Style-D Series Only)

• Popular Rack Mount Attenuator Versions are Available on the AT and E408
Series for Mounting on to Blank Panels in Equipment Cabinets

AT10 / AT35 / AT100 Series

AT10 / AT35 / AT100 Series Face Plate Options

Attenuators are available in Classic Stainless

or Decora(Decora available in Ivory or White)

E408-100

• All AT Models Mount into Most 1-Gang E.O. Boxes. (2

• AT and E408 Series are UL Listed

Genenal Description

AT Series Industry Standard Auto Transformer. High-quality auto
transformer series provides the advantages of excellent frequency
response, low insertion loss and reliable performance for volume control
application in 25V/70.7V systems. Attenuation is accomplished in ten
make before break steps plus positive Off position. (No stop between
maximum and Off position to prevent switch damage). Contacts are
silver plated for noise-free operation. Features a removable terminal
block. Includes stainless steel plate, with stamped and filled or screen
printed dial scale and a skirted black knob. (White and ivory plastic plates
with matching skirted knobs also available in Decora style-see AT model
description chart).

E408 Auto Transformer with Precision Level Control. Specially designed
for attenuation in masking and sound reinforcement systems where fine
tuning of level control is required. Employs a ten-position, non-shorting
rotary switch without stop. Attenuation rate is 1.5dB per step. (All other
specifications are the same as the AT Series including the UL listing).

PA Series Priority Paging Option. Priority paging feature by-passes
the effect of the attenuator to provide program level selection of
individual emergency and paging signals at the amplifier. Option is
available on all AT attenuators. The SPDT relay is operated with 24VDC
at 10mA. Includes protective relay cover to ensure lasting trouble-free
performance. Terminations to the relay and attenuator are made via a
removable terminal block. (All other specifications except for dimensions
are the same as selected AT models).

RM Series Rack Mount Option. For attenuation convenience of
rack-mounted equipment in cabinets and consoles, the AT, E408
Series attenuators are available without mounting plate for rack panel
installation. Attractive matte black polycarbonate dial scale overlay with
adhesive backing replaces the mounting plate. Includes skirted black
knob. Overlay size is 29 square (51mm). (To order, simply add RM after
the selected attenuator model number. Example: AT10-RM or AT10­PARM.) (Dial scale overlays to retrofit existing installations are available,
see Model HX23.)

3

⁄4" Deep)

©2011 Atlas Sound L.P. All rights reserved. Atlas Sound and Strategy Series are trademarks of Atlas Sound L.P. All other trademarks are the property of their respective owners. ATS001063 RevD 10/13

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

RM Series

Replacement Knobs

HX21-B

AtlasSound.com

HX22-W

1/5

Specfications

Architect and Engineer Specifications

AT10-(PA)

Power Rating * 10 Watts

UL Listing

Attenuation Per Step 3dB

Total Attenuation 33dB**

Insertion Loss .4dB

Plate Size 1 gang

Resistance None

AT35-(PA)

Power Rating * 35 Watts

UL Listing

Attenuation Per Step 3dB

Total Attenuation 27dB

Insertion Loss .6dB

Plate Size 1 gang

Resistance None

AT100-(PA)

Power Rating * 100 Watts

UL Listing

Attenuation Per Step 3dB

Total Attenuation 27dB

Insertion Loss .6dB

Plate Size 1 gang

Resistance None

AT Series Attenuator(s) shall be Atlas Sound AT Series Model
____________ auto transformer or approved equal. The power rating shall
be __________ and attenuation range shall be _________dB. Attenuation
per step for AT-____ shall be 8 steps of 3dB and 6dB each for the last
two positions. Attenuator shall be a step type control with a positive off
position. There shall be no stop between the maximum and off positions
(AT Series only). Switch shall have silver plated contacts to eliminate
noise and contact loss. All terminations must be made via a removable
terminal block. Unit(s) shall be supplied with one of the following single
gang face plates to be noted by model number suffix: Standard stain less
steel faceplate (with dial scale to indicate attenuator position), Decora
style plastic face plate-Ivory color, Decora style plastic face plate-White
color. All models are designed to mount in a standard E.O. box.

E408 UL Listed attenuator shall be Atlas Sound Model E408-100 auto
transformer or approved equal. The power rating shall be 100W. The
at tenu ation per step shall be 1.5dB. Unit shall be a step type control with
a positive off position. There shall be no stop between the maximum and
off positions. Switch shall have silver plated contacts to elimi nate noise and
contact loss. The attenuator shall be mounted to a standard gang stainless
steel wall plate which mounts to a standard E.O. box.

RM Option Attenuator shall be Atlas Sound Model ____________
[(AT, E408 (-RM)] or ap proved equal. Face plate shall be replaced
by an adhesive matte black poly car bon ate dial scale escutcheon for
attachment to a rack mount panel. Escutcheon size shall be 2" SQ.

PA Option Specified AT Series attenuators include a priority relay. Relay
shall be an SPDT, 24 VDC type securely mounted to the attenuator
assembly wired at the factory. Relay shall include a protective cover.

E408-100

Power Rating * 100 Watts

UL Listing

Attenuation Per Step 1.5dB

Total Attenuation 15dB

Insertion Loss .6dB

Plate Size 1 gang

Resistance None

* Continuous
** These units have two steps of 6dB before off position.

Note: Attenuation curve is steeper for a 25-volt line

©2011 Atlas Sound L.P. All rights reserved. Atlas Sound and Strategy Series are trademarks of Atlas Sound L.P. All other trademarks are the property of their respective owners. ATS001063 RevD 10/13

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

AT10 (dc) (-PA) (-RM)
AT35 (dc) (-PA) (-RM)
AT100 (dc) (-PA) (-RM)

Faceplate Options:

=

d

D - Decora Style Faceplate

Ivory and White inserts, trim ring
and knobs icluded.

If there is not the above 1 letter suffix,
the attenuator is shipped with the
standard stainless steel faceplate or
is the RM version without a faceplate.

Announce Circuit

AtlasSound.com

(-RM)

Rack

Mount

Option

(-PA)

Priority

Option

2/5