Precision Audio and AV Interface Products

Radio Design Labs

RU-PA518 10 W Stereo / 18 W Mono Audio Amplifier - 8 Ω

  • 9 W RMS per Channel Stereo into 4 Ω
  • 18 W RMS Mono into 8 Ω
  • Selectable Stereo or Bridged Mono
  • Selectable Built-In Peak Limiter
  • 1/3 Rack, High-Density Rack Mounting
  • Front-Panel Control for 2 Inputs
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The RU-PA518 features two modes of operation: stereo and bridged mono. Depending on the mode of operation, the RU-PA518 can deliver from 5 to more than 18 watts of RMS power at the output. In stereo mode, each of the two inputs feeds its respective left or right output. Front-panel level controls set the gain for both left and right channels. When the rear-panel switch is set to the bridge mode, the two inputs (A and B) are mixed together and fed to the output. In either the stereo or mono mode, an internal audio peak limiter may be turned on using a rear panel switch.

Inputs (2):
Line level (+4 dBu nominal bal,
-10 dBV nominal unbalanced)
Input Impedance:
20 kΩ balanced bridging, or 10 kΩ unbalanced
Input Connectors:
Balanced on barrier block; Unbalanced on phono jack
Minimum Input Signal Levels:
Balanced: -6 dBu for rated power
Unbalanced: -20 dBV for rated power
Maximum Input Signal Levels:
Balanced: +20 dBu
Unbalanced: +6 dBV
Frequency Response:
20 Hz to 40 kHz (±1 dB, stereo mode,8 Ω output @ 5 W RMS)
25 Hz to 40 kHz (±1 dB, stereo mode, 4 Ω output @ 9 W RMS)
25 Hz to 30 kHz (±1 dB, bridge mono mode, 8 Ω output @ 18 W RMS)
THD+N:
< 0.05% below rated power (1 kHz)
< 0.1% below 18 W RMS (50 Hz to 20 kHz)
Noise:
< -85 dB below rated output
CMRR:
> 55 dB (50 Hz to 120 Hz)
Crosstalk:
< -60 dB (stereo mode, 1 kHz)
Output Power:
Stereo Mode: > 5 W RMS per channel Into 8 Ω
> 9 W RMS per channel into 4 Ω
Mono Mode: > 18 W RMS into 8 Ω
Ambient Operating Environment:
0° C to 40° C; 20° C recommended
Power Requirement:
GROUND-REFERENCED, 24 Vdc @ 1500 mA (RMS output) 1000 mA (Continuous music or voice)
Dimensions:
Height: 1.7 in. (4.3 cm), Width: 5.8 in (15.0 cm), Depth 8.0 in. (20.3 cm)
Package Type:
Cardboard Box
Package Dimensions:
9.5 x 7 x 2.25 in.
Shipping Weight:
1.83 lbs.
WEEE weight:
1.475 lbs.
Tariff code:
8518.50.0000

Documents:
Format
PDF
CAD Files:
Format
High Res Images:
Format
Declaration of Conformity:
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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-PA518 RU-PA518