Atlas SM52 Brosur - Halaman 2

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Atlas Sound WhisperTouch

Switched WhisperTouch

™

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 pow-

ered 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

For installation, either a backless E.O. box or sealed box with 18 or 20 in

is required. Standard or Decora plate styles and available colors vary by model – see chart for details. Decora trim

plates not included.

Model

Impedance

Voltage

Series

DWS-8(I/W)

8 Ω

—

SWS-8I

8 Ω

—

DWSM-15(I/W)

70.7V

—

SWS-15W

—

70.7V

DSUMS-8W

8 Ω

—

SSUMS-8I

8 Ω

—

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

⁄

" mini-plug for direct connection to the

ﬂashers) or for use with up to three Switched WhisperTouch

Model

Powers Up To

PS-M12

3 Switched WhisperTouch

Commercial Stereo Attenuators

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

DAT Series

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 2

trim plates.

•

Choose

to Control Speaker Volume when Impedance Matching is Not Necessary Such as Single-pair

DAT8ST

Installations or when Multi-channel Ampliﬁers are Used for Individual Zones. Combine

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.

Model

Power

System

Series

Rating

Impedance

RMS / Channel

DAT8ST (I/W)

50 watts

8 Ω

DAT35ST70 (I/W)

35 watts

—

* 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

Impedance Matching Volume Controls

(See Page 64) for up to 18 units.

Power

Plate

Type

Rating

Style

50 watts

Decora

Stereo, Switched

50 watts

Standard

Stereo, Switched

15 watts

Decora

Mono, Switched

15 watts

Standard

Stereo, Switched

25 watts

Decora

Left, Right, Summing Switched

25 watts

Standard

Left, Right, Summing Switched

M-1CB4

volume controls.

™

Input

120VAC

⁄

" deep. Includes both white and ivory knobs, inserts and

Attenuation

Voltage

Per Step

—

3 dB*

25V or 70.7V

3 dB**

Volume Controls

volume (Carlon

B120A or equivalent)

Requires

20 in

E.O. Box

& Power Supply

18 in

E.O.Box

& Power Supply

20 in

E.O. Box

& Power Supply

connector block (powers up to four

Output (Nom.)

12VDC @ 300 mA

DAT8ST

Insertion

Loss

Total

30 dB

.5 dB

27 dB

.5 dB

Attenuation

10 Steps,

22.5 dB Total

DWT / DSUM Series

(Shown with cover plate)

F-1

with a Separate

Plate

Size

1 gang

DAT8ST

DAT35ST70