Precision Audio and AV Interface Products

Radio Design Labs

D-SFRC8 Room Control Station for SourceFlex Distributed Audio System

  • Single Room Listening Station with In-Wall Controls
  • Source Selection Pushbutton
  • Volume Adjustment Using a Single-Turn Control
  • Selection From up to 8 Audio Sources
  • Line-Level Audio Output
  • Line Output Switchable Fixed or Variable
  • Variable Output Follows Front-Panel Level Control
  • 3.5 Watt RMS Audio Amplifier into 8 Ohms, 6.5 Watts into 4 Ohms
  • High-Efficiency Class D Operation
  • Thermal and Short-Circuit Protection
  • Speaker Output Connection on Detachable Terminal Block
  • Mounts In Wall Using US Single Gang Electrical Box or RDL® WB-1U
  • Compatible with Other RDL Wall Plates and Controls
  • Ideal for Office Distributed Sound Systems with Music and Paging
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The D SERIES-SFRC8 Room Control Station is a SourceFlex listening station for wall mounting in a room, providing source selection and volume control from up to 8 audio sources. A numeric display shows the selected source. There are two line-level audio outputs on the rear of the unit, balanced and unbalanced, to feed an external power amplifier. The amplified power output can deliver up to 3.5 Watts RMS into an 8 ohm Speaker.

A rear-panel switch set during installation causes the balanced line-level output to produce either a fixed +4 dBu or a variable level adjusted by the front-panel control. The unbalanced output is 12 dB below the balanced output level.

Amplification is provided by a high-efficiency Class D power stage with audio filtering tailored for crisp, pleasant audio clarity. The high-efficiency Class D output stage produces negligible heat for all levels of expected voice or music modulation.

The D SERIES-SFRC8 is designed to be mounted in a wall box. Wiring is connected through a rear-panel detachable terminal block. The -SFRC8 is ideal for office distributed sound systems with background music and a paging source. Installation is simple, requiring only wiring and an external 8 ohm Speaker for most installations.

Applications

Input:
10-position detachable terminal block
Display:
7-segment red LED (0 = off or Paging; 1 through 8 = selected channel)
Selector:
Momentary button channel SELECT
Gain Adjustment:
Single-turn audio taper (Front-panel)
Frequency Response:
20 Hz to 20 kHz (Line level, ±0.1 dB); 40 Hz to 20 kHz (Speaker, ±1 dB)
THD+N:
< 0.1% (Line level, 20 Hz to 20 kHz); < 0.25% (Speaker, 1 kHz)
Noise:
< -85 dB (Line level, below +4 dBu); < -80 dB (Speaker, below 1 W RMS)
Control Signals:
dc (DISPLAY RAMP and CONTROL conductors between remote Listening Station and Controller)
Line Outputs (2):
+4 dBu balanced, -10 dBV unbalanced, nominal
Output Power:
3.5 W RMS (Max., into 8 ohms); 6.5 W RMS (Max., into 4 ohms)
Power Requirement:
24 Vdc @ 30 mA (Idle); 55 mA (1/8 power; normal voice or music); 225 mA (3.5 W into 8 ohms), Supplied from SourceFlex controller
Ambient Operating Environment:
0° C to 40° C Maximum; 20° C Recommended
Dimensions:
Height: 4.13 in. 10.49 cm; Width: 1.7 in. 4.32 cm; Depth: 2.05 in. 5.21 cm
Package Type:
Cardboard Box
Package Dimensions:
3.625 x 4.625 x 2.125 in.
Shipping Weight:
.44 lbs
WEEE weight:
0.305 lbs.
Tariff code:
8518.40.2000

Documents:
Format
PDF
CAD Files:
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High Res Images:
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Press Release:
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Declaration of Conformity:
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PDF

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D-SERIES

D Series products are user controls, indicators and connection plates that are compatible with Decora® style mounting. D Series modules and jacks connect directly to a variety of active RDL modules in multiple product series and are compatible with many OEM products. Products in this series may be active or passive. All D Series front panels are constructed of stainless or carbon steel for durability, shielding and static protection. Stainless steel models feature a brushed finish with direct lettering. Painted models are finished with a reverse-printed front-panel polycarbonate laminate which provides an attractive, durable finished appearance.

Connector plates offer pass-thru jacks or rear-panel solder terminals. Transformer-isolated connector modules are equipped with a shielded enclosure and a rear-panel terminal block.

Active models include remote controls to provide source selection, routing, level control, muting, source or level LED indication and more.

The depth of D Series products is sufficiently shallow to permit mounting not only in standard North American electrical boxes but also in RDL wall boxes designed to fit in narrow walls used in international installations. RDL also offers a variety of related accessories for wall mounting, surface mounting and desktop chassis mounting of D Series products, as well as matching metal trim plates.

Attractive styling, ease of installation, long-life pushbuttons, high quality connectors and worldwide mounting possibilities make D Series products a preferred long-term resource for system design solutions. D-SERIES modules are designed and manufactured in the U.S.A.

D-SFRC8 D-SFRC8