Radio Design Labs Fp-Pa20A 20W Mono Audio Amplifier — 70V/100V Line Output

Description

• Description
• Specifications
• Downloads

• RDL FP-PA20A 20W Mono Audio Amplifier | 70V / 100V | Constant Voltage | Compact Design

  The FP-PA20A features a balanced line level input that may be connected unbalanced. A front panel gain control is designed to be adjusted either manually or with a trimming screwdriver. The gain range will accommodate standard unbalanced levels as well as professional balanced levels. Both a 70 V and 100 V amplified output are provided to drive corresponding speakers in a distributed sound system. Audio levels that could cause the amplified output to clip are compressed using two dynamic time constants designed to preserve aural transparency. Normal audio level signals remain unaffected by the compressor thereby preserving audio dynamics and preventing the compressor from increasing feedback potential when the amplifier is used for paging. The FP-PA20A produces average audio levels and audio clarity normally expected of amplifiers delivering much higher output power.
  Features 
  20 Watts RMS Constant Voltage Amplifier
  70 V and 100 V Outputs
  Integral Audio Compressor to Control Clipping
  High Overall Operating Audio Level
  Maximized Audio Level for Output Power
  Audio Quality Superior to Standard Amplifiers
  Plenum Rated per UL 2043 Standard

• Feature	Description
  Indicators	Red LED: PEAK LED indicates compressor activity Green LED: Power ON
  Ambient Operating Environment	0°C to 30°C Max; 20°C Recommended
  CMRR	> 55 dB (50 Hz to 120 Hz)
  Output Power	20 W RMS @ 70 V or 100 V
  Compressor	Threshold 6 dB below rated output, automatic adjusting attack & release
  Noise	< -80 dB (below 20 W RMS)
  Overall Dimensions	Height: 2.3 in. (5.85 cm) Width: 3.25 in. (8.26 cm) Length: 6 in. (15.3 cm)
  Gain Adjustment	Single turn audio taper
  Plenum Rating	UL 2043
  THD+N	< 0.1% (@ 1 kHz) < 0.5% (50 Hz to 20 kHz) *Measured at compressor threshold (4 W RMS output power)
  Frequency Response	50 Hz to 20 kHz (± 3 dB)
  Maximum Input Levels	Balanced: +23 dBu Unbalanced: +15 dBV
  Minimum Input Levels	Balanced: -26 dBu Unbalanced: -28 dBV
  Input / Output Connector	Detachable terminal block
  Input Impedance	20 kΩ balanced bridging; 10 kΩ unbalanced
  Input	Line level (+4 dBu balanced; -10 dBV unbalanced)
  Power Requirement	24 VDC @ 1650 mA (continuous RMS output) 24 VDC @ 1000 mA (normal uncompressed audio)
  Package Type	Cardboard Box
  WEEE Weight	2.18 lbs.
  Shipping Weight	2.395 lbs.
  Tariff Code	8543.70.9910
  Package Dimensions	4.375 × 7 × 2.25 in.

• Description	Downloads
  Radio Design Labs 20W Mono Audio Amplifier – 70V or 100V | FP-PA20A DataSheet	Download

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