Atlas AT10, AT35, AT100, AT10D, AT35D Brochure

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Industry Standard Commercial Attenuators

Industry Standard Auto Transformer

AT Series UL listed high-quality auto transformer series provides the advantages of excellent frequency response,

low insertion loss and reliable performance for volume control application in 25V and 70.7V systems. Attenuation is accomplished in ten steps plus positive off position. (No stop between maximum and off position to prevent switch damage). Contacts are silver plated for noise-free operation. Includes stainless steel plate, stamped and ﬁlled dial scale with skirted black knob.

AT10

shown in

standard backbox

AT10/35/100

Series

E408100

Model UL Power

AT10

AT35

AT100

813 & 2043 10 watts 3 dB 27 dB .4 dB 1 gang

813 & 2043 35 watts 3 dB 27 dB .4 dB 1 gang

813 & 2043 100 watts 3 dB 27 dB .4 dB 1 gang

Rating

Attenuation Per Step

Total Attenuation

Insertion Loss

Plate Size

Plate Type

Stainless NA

Plate Color

AT Decora Series Include White and Ivory Decora Style plastic plates, with matching skirted knobs.

Model UL Power

AT10D

AT35D

AT100D

813 & 2043 10 watts 3 dB 33 dB .4 dB 1 gang Plastic Decora

813 & 2043 35 watts 3 dB 27 dB .6 dB 1 gang Plastic Decora

813 & 2043 100 watts 3 dB 27 dB .6 dB 1 gang Plastic Decora

Rating

Attenuation Per Step

Total Attenuation

Insertion Loss

Plate Size

Plate Type

Plate Color

White/Ivory

Auto Transformer with Precision Level Control

E408-100 Specially designed for attenuation in masking and sound reinforcement systems where ﬁne tuning of level

control is required. The E408-100 employs a ten-position, non-shorting rotary switch without stop. Attenuation rate is

1.5 dB per step. (All other speciﬁcations are the same as the AT Series including the UL listing).

Model UL Power

E408-100 813 & 2043 100 watts 1.5 dB 15 dB .6 dB 1 gang Stainless NA

Rating

Attenuation Per Step

Total Attenuation

Insertion Loss

Plate Size

Plate Type

Plate Color

Priority Paging Option

PA Series Priority paging feature bypasses the effect of the attenuator to provide program level selection of

individual emergency and paging signals at the ampliﬁer. This option is available on all AT Series attenuators. The SPDT relay is operated with 24VDC at 10 mA. Includes protective relay cover to ensure lasting trouble-free performance. (All other speciﬁcations except for dimensions are the same as AT Models.)

AT10D (decora)

RM Series

Rack Mount Option

RM Series For attenuation convenience of rack-mounted equipment in cabinets and consoles, the AT Series and E408 Series attenuators are available without mounting plate for rack panel installation. Attractive matte black polycar-

bonate dial scale overlay with adhesive backing replaces the mounting plate, skirted black knob included. Overlay size is 2" square (51 mm). (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 hardware section Model HX23.)

For easy rack mounting of RM Series attenuators, see model ATPLATE-052, Section 4, page 54.

Model Plate Height Depth Attenuator Height Plate Width Attenuator Width

AT10

AT10-PA

AT35

AT35-PA

AT100

AT100-PA

E408-100

41⁄2" (114 mm) 21⁄8" (54 mm) 23⁄4" (70 mm) 23⁄4" (70 mm) 13⁄4" (44 mm)

41⁄2" (114 mm) 25⁄8" (67 mm) 21⁄16" (52 mm) 23⁄4" (70 mm) 25⁄16" (59 mm)

AtlasSound.com

Atlas Sound WhisperTouch® Volume Controls

Switched WhisperTouch™ Impedance Matching Volume Controls

Switched WhisperTouch volume controls provide clear, distortion-free music reproduction for commercial distributed systems or "Whole House" audio designs.

These volume controls feature impedance-matching (8 Ω versions only) to protect the ampliﬁer and balance the audio signal, ﬁne-tune level control to adjust low listening levels to the perfect setting, and an easy-grip, low proﬁle knob. The knob features smooth detents and make-before-break contacts for smooth transition when changing volume settings. Attenuation is accomplished in 10 steps. All models have frequency response of 20 Hz – 20 kHz (-3 dB, +0).

Units include an on / off switch and indicator light. An internal "smart" relay switch automatically puts speakers into "stand by" mode making them "available" rather than indiscriminately active when the audio system is powered on. Simply touching the switch accesses audio. A modest sized indicator light provides quick visual status – (green=standby, red=active) Models require a separate 18-gauge, 2 conductor stranded cable to power the internal relay in addition to the loudspeaker cable. An external power supply, PS-M12, is recommended for 1–3 WhisperTouch units, or PS24-20 (See Page 64) for up to 18 units.

For installation, either a backless E.O. box or sealed box with 18 or 20 in3 volume (Carlon® B120A or equivalent) is required. Standard or Decora plate styles and available colors vary by model – see chart for details. Decora trim plates not included.

Four

Model Series

DWS-8(I/W)

SWS-8I

DWSM-15(I/W) —

SWS-15W —

DSUMS-8W 8 Ω

SSUMS-8I 8 Ω

Impedance Voltage Power

8 Ω — 50 watts Decora Stereo, Switched 20 in3 E.O. Box

8 Ω — 50 watts Standard Stereo, Switched

Rating

70.7V 15 watts Decora Mono, Switched 18 in3 E.O.Box

70.7V 15 watts Standard Stereo, Switched

— 25 watts Decora Left, Right, Summing Switched 20 in3 E.O. Box

— 25 watts Standard Left, Right, Summing Switched

Plate Style

Type

Requires Attenuation

& Power Supply

10 Steps,

22.5 dB Total

Power Supplies for Switched WhisperTouch

PS-M12 Unit is a compact UL-listed 12VDC, 300 mA power supply with a 6' cord. The required input voltage is

120V. Supply includes a 1⁄8" mini-plug for direct connection to the M-1CB4 connector block (powers up to four F-1 ﬂashers) or for use with up to three Switched WhisperTouch™ volume controls.

Model Powers Up To Input Output (Nom.)

PS-M12

3 Switched WhisperTouch 120VAC 12VDC @ 300 mA

Commercial Stereo Attenuators

DAT Series Atlas Sound offers traditional autoformer controls to provide excellent stereo performance and maxi-

mum speaker-handling capability. Models include positive off and full-power pass through at the maximum setting. Contacts are make-before-break for smooth transition. Models with 8 Ω impedance are suitable for residential stereo and voice-coil circuit application. Models for 25V or 70.7V use provide level control in distributed constant-voltage systems. Single-gang models mount standard E.O. boxes 21⁄2" deep. Includes both white and ivory knobs, inserts and trim plates.

• Choose DAT8ST to Control Speaker Volume when Impedance Matching is Not Necessary Such as Single-pair Installations or when Multi-channel Ampliﬁers are Used for Individual Zones. Combine DAT8ST with a Separate Impedance-Matching Switching Device (AST Series) to Design a System with Multiple Loudspeaker Pairs.

• Choose DAT35ST70 for Control of Distributed Stereo Zones in 25V / 70.7V Systems.

DWT / DSUM Series

(Shown with cover plate)

Model Series

DAT8ST (I/W)

DAT35ST70 (I/W)

* Models have two steps of 6 dB before off. Note: Attenuation curve is steeper for a 25V line. ** Models have one step of 6 dB before off. Note: Decora® is a Registered Trademark of Leviton Corporation.

800.876.3333

Power Rating RMS / Channel

50 watts

35 watts

System Attenuation Insertion

Impedance Voltage Per Step Total

8 Ω — 3 dB* 30 dB .5 dB 1 gang

— 25V or 70.7V 3 dB** 27 dB .5 dB 1 gang

Loss

Plate Size

DAT8ST

DAT35ST70

+ 3 hidden pages

Atlas AT10, AT35, AT100, AT10D, AT35D Brochure

Specifications and Main Features

Frequently Asked Questions

User Manual