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| Radio Design Labs FP-PA20B 20W Mono Audio Amp, 25V |
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Item# 77991
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Price: Normally $184.23
Hot Deal $120.24
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Free shipping on orders $200 and up details
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Overview
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- 20 Watts RMS constant voltage amplifier
- 25V output
- Integral audio compressor to control clipping
- High overall operating audio level
- Maximized audio level for output power
- Audio quality superior to standard amplifiers
Essential Info
The FP-PA20B 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. A 25 V amplified output is 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-PA20B produces average audio levels and audio clarity normally expected of amplifiers delivering much higher output power. Also available in 8 Ohm and 70V/100V versions. This item requires a 24V power supply such as the PS-24AS or PS-24K for operation.
Important notes:
- Smarthome does not offer technical support on this product, please contact the manufacturer directly for all product support.
- Only defective exchanges for identical item within 30 days of purchase. No other returns allowed on this item. For defective returns after 30 days, please contact the manufacturer.
Manuals/Software
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More Info
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Input / Output Terminal Block Connections
Line Level Balanced or Unbalanced Input
Integral Audio Compressor to Control Clipping
High Overall Operating Audio Level
Peak LED to Indicate Audio Compression
Ultra-compact All Metal Construction
Convenience of RDL FLAT-PAKs
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Specifications
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- Input: Line level (+4 dBu nominal balanced, -10 dBV nominal unbalanced)
- Input Impedance: 20k Ohms balanced bridging, 10k Ohms unbalanced
- Input / Output Connectors: Plug-in terminal block
- Gain Adjustment: Single turn audio taper
- Minimum Input Levels, Balanced: -26 dBu (to cross compressor threshold)
- Minimum Input Levels, Unbalanced: -28 dBV (to cross compressor threshold)
- Maximum Input Levels: Balanced: +23 dBu, Unbalanced: +15 dBV
- Frequency Response: 50 Hz to 18 kHz (+/- 3 dB)*
- THD+N: < 0.1% (@ 1 kHz)*, < 0.5% (50 Hz to 20 kHz)*
- Compressor: Threshold 6 dB below rated output, automatic adjusting attack and release
- Noise: <-80 dB (below 20 W RMS)
- CMRR: > 55 dB (50 Hz to 120 Hz)
- Output Power: 20 W RMS @ 25 V
- Ambient Operating Environment: 0° C to 30° C Maximum; 20° C Recommended
- Power Requirement: 24 Vdc @ 1650 mA (for continuous RMS power output, Ground referenced) 24 to 33 Vdc @ 1000 mA (for normal program material with minimal compression, Ground referenced)
- Indicators (2): Red LED: PEAK LED indicates compressor activity, Green LED: Power ON
*measured at compressor threshold level equaling 4 W RMS output power
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