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RDL FP-PA20


Audio Power Amplifier 8 OHM Output

BSW PART: FPPA20

RDL FP-PA20
The FP-PA20 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. The output will drive an 8 Ω speaker or multiple speakers connected to present an 8 Ω load to the amplifier. 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-PA20 produces average audio levels and audio clarity normally expected of amplifiers delivering much higher output power.

PS24V2A power supply sold separately.

Main Features:
• 20 Watts RMS Audio Power Amplifier
• Output for 8 Ω Speaker
• Integral Audio Compressor to Control Clipping
• High Overall Operating Audio Level
• Maximized Audio Level for Output Power
• Audio Quality Superior to Standard Amplifiers

Specifications:

• Input:Line level (+4 dBu bal; -10 dBV unbal)
• Input Impedance: 20 kΩ balanced bridging; 10 kΩ unbal
• Input / Output Connector: Detachable terminal block
• Gain Adjustment: Single turn audio taper
• Minimum Input Levels:
• Balanced: -26 dBu (to cross compressor threshold)
• Unbalanced: -28 dBV (to cross compressor threshold)
• Maximum Input Levels:
• Balanced: +23 dBu • Unbalanced: +15 dBV
• Frequency Response: 35 Hz to 50 kHz (+/- 1.5 dB)* 
THD+N: *measured at compressor threshold level equaling 4 W RMS output power < 0.1% (@ 1 kHz)* < 0.5% (35 Hz to 20 kHz)*
• Noise:< -80 dB (below 20 W RMS)
• Compressor:Threshold 6 dB below rated output, automatic adjusting attack and release
• CMRR:> 55 dB (50 Hz to 120 Hz)
• Output Power:20 W RMS into 8 Ω
Ambient Operating Environment:0° C to 30° C Max; 20° C Recommended
• Indicators (2):
• Red LED:PEAK LED indicates compressor activity
• Green LED:Power ON
• Power Requirement:24 Vdc @ 1650 mA, Ground referenced (for continuous RMS power output) 24 Vdc @ 1000 mA, Ground referenced (for normal uncompressed audio)
• Overall Dimensions:Height: 2.3 in (5.85 cm); Width: 3.25 in. (8.26 cm); Length: 6 in. (15.3 cm)

RDL FP-PA20 Figure 1

RDL FP-PA20 Figure 2

List Price: $215.66
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