Precision Audio and AV Interface Products

Radio Design Labs

RU-AFC2 Stereo Audio Format Converter

  • Unparalleled Audio Performance
  • Unbalanced to Balanced Audio Conversion
  • Additional Summed MONO Out
  • Switch-Selectable Ground Lift for XLR Output Jacks
  • Balanced to Unbalanced Audio Conversion
  • Unbalanced RCA Connections on Front Panel
  • Balanced XLR Connections on Front Panel
  • Balanced Connections on Rear Panel Detachable Terminal Blocks
  • Front-Panel Multi-Turn LEVEL Trimmers
  • Dual-LED VU Meter for Each Channel
  • Gold-Plated Connectors
  • Exceptional Headroom and Frequency Response
  • 1/3 Rack, High Density Rack Mounting
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The RU-AFC2 is a stereo bi-directional audio format converter. The bi-directional format allows the RU-AFC2 to fully convert the stereo input and stereo output of a consumer audio product to professional balanced standards. It can equally convert the stereo input and stereo output of a professional audio product to consumer unbalanced standards. The audio fidelity, low noise, low distortion and excellent crosstalk performance of the RU-AFC2 are ideally suited to the most critical applications. The RU-AFC2 has been carefully engineered in meticulous detail to provide the ultimate audio interface package available.

Unbalanced audio connections are available on front-panel RCA jacks. Balanced audio connections are available on front-panel XLR jacks and on rear-panel detachable terminal blocks. The shield connections of the XLR output jacks are connected to the case through a rear-panel ground-lift switch. The unbalanced to balanced section includes an additional MONO summed output on a rear-panel detachable terminal block which may be wired balanced or unbalanced. The mono output may be used to drive patch-bay jacks, powered monitors or subwoofer amplifiers.

Each of the left and right outputs is equipped with a dual-LED VU-meter. The intensity of the green LED is proportional to the audio level. The red LED flashes at the calibrated output level, -10 dBV unbalanced or +4 dBu balanced. An individual multi turn level trimmer is provided on the front panel for each output channel.

The RU-AFC2 operates from ground-referenced 24 Vdc. Use the RU-AFC2 individually, or combine it with other RDL products as part of a complete audio/video system.

Applications

Unbal to Bal Section:
(Referred to ‑10 dBV input feeding +4 dBu)
Inputs (2):
Unbalanced line‑level, +25 dBV max.
Input Connectors (2):
RCA Phono jack (left and right)
Outputs (3):
+4 dBu balanced (left, right, mono sum), +25 dBu max.
Output Connectors (4):
XLR (2) and/or detachable terminal block (left and right); detachable terminal block (mono sum)
Gain adjustment:
-25 dB to +9 dB (rel. +4 dBu)
Frequency Response:
10 Hz to 150 kHz (+/‑ 0.25 dB)
THD+N:
< 0.005%
Noise:
< ‑90 dB (below +4 dBu)
Crosstalk:
< ‑80 dB (20 Hz to 20 kHz)
Headroom:
> 20 dB
Bal to Unbal Section:
(Referred to +4 dBu input feeding ‑10 dBV)
Inputs (2):
Balanced line‑level, +25 dBu max.
Input Connectors (3):
XLR (2) or detachable terminal block (left and right)
Outputs (2):
-10 dBV unbalanced (left and right), +17 dBV max.
Output Connectors (2):
RCA Phono jack (left and right)
Level adjustment:
‑28 dB to +5 dB (rel. -10 dBV)
CMRR:
> 80 dB (50 to 120 Hz)
Frequency Response:
10 Hz to 150 kHz (+/‑ 0.25 dB)
THD+N:
< 0.001%
Noise:
< ‑100 dB (below ‑10 dBV)
Crosstalk:
< ‑90 dB (10 Hz to 20 kHz)
Headroom:
> 20 dB
Ambient Operating Environment:
0° C to 55° C
Power Requirement:
GROUND‑REFERENCED, 24 Vdc @ 60 mA (idle), 100 mA (max)
Package Type:
Cardboard Box
Package Dimensions:
6 x 6 x 2.625 in.
Shipping Weight:
1.53 lbs.
WEEE weight:
1.285 lbs.
Tariff code:
8543.70.9860

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

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RACK-UP SERIES

RACK-UPs are the original 1/3 rack width 1RU rack-mountable modules for the A/V, recording and broadcast industries. Module functions include mixing, switching, pre-amplification, power amplification, distribution, gain control, equalization and more. Some RACK-UP modules are constructed in solid encapsulated durable industrial black plastic enclosures; MAX RACK-UPs are assembled using heavy duty extruded aluminum and steel panels. The rear panels feature clear bold white lettering for the terminal blocks and connectors. Reverse-printed front-panel polycarbonate laminates provide an attractive, durable finished appearance for rack-mounted or free-standing use.

Since RDL first originated 1/3 rack width modules, RACK-UPs have led the industry in economical, high-performance and cost-effective long life solutions in system designs. Multiple RACK-UP modules may be interconnected, or may be connected with other RDL modules to form all or part of an A/V system. Certain RACK-UP modules are often used free standing; all RACK-UPs may be rack mounted. A complete range of mounting options is available for systems comprised of multiple modules.

RACK-UP modules provide input, output and control connections through terminal blocks and connector (or both) according to common usage in professional installations. Front panels are equipped with connectors, user controls and LED metering, as appropriate.

Functions and features provided by RACK-UPs, since their introduction, are still available today. This continuity in product offering and support makes RACK-UP modules a preferred long-term resource for system design solutions. RACK-UP SERIES modules are designed and manufactured in the U.S.A.

RU-AFC2 RU-AFC2