Information Sheet

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©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
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
• All AT Models Mount into Most 1-Gang E.O. Boxes. (2
3
⁄4" Deep)
• 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 AT10-
PARM.) (Dial scale overlays to retrofit existing installations are available,
see Model HX23.)
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
RM Series
HX21-B
HX22-W
Replacement Knobs