RDL FP-PA20A Manual de Usario

RDL receptor FP-PA20A

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FLAT-PAK™ SERIES
Model FP-PA20B
20 W Audio Power Amplifier
20 Watts RMS Constant Voltage Amplifier
25 V Output
Maximized Audio Level for Output Power
Audio Quality Superior to Standard Amplifiers
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
The FP-PA20B is part of the group of versatile FLAT-PAK products from Radio Design Labs. The unique
FLAT-PAK case can be directly screwed or bolted to cabinets or shelves. Optionally available rack-mounting
accessories permit single or multiple FLAT-PAK module mounting.
APPLICATION: The FP-PA20B is the ideal choice in many applications where multiple 25 V speakers in a
zone need to be powered from a single audio power amplifier.
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.
A red PEAK LED is provided to indicate the threshold of the integral compressor. Audio levels that could
cause the amplified output to clip are compressed according to two dynamic time constants. 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 compressor is
designed to remain aurally transparent while maintaining clean, unclipped amplified audio for input overloads
of up to 20 dB. In addition to the compressor, an active filter circuit prevents saturation of the output
transformer at low frequencies. The FP-PA20B produces average audio levels and audio clarity normally
expected of amplifiers delivering much higher output power.
The durable construction and low profile of the FP-PA20B allow mounting in a wide range of locations not
suited to a conventional style power amplifier. Power is provided to the module either through the barrier
block or through the DC power jack. For continuous RMS output power, a 24 VDC 2A power supply is
required. A 1A supply is sufficient for normal program audio levels and content. Power supplies are sold
separately.
Wherever a high quality constant voltage audio power amplifier is needed to provide reliability, compactness
and unsurpassed versatility, the FP-PA20B is the ideal choice. Use the FP-PA20B individually, or combine it
with other RDL products as part of a complete audio/video system.
RDL
659 6
th St.
Prescott, AZ., USA 86301
(928) 443-9391
FAX (928) 443-9392 www.rdlnet.com
FLAT-PAK™
SERIES
Model FP-PA20B
20 W Audio Power Amplifier
TYPICAL PERFORMANCE
Input: Line level
(+4 dBu nominal balanced)
(-10 dBV nominal unbalanced)
Input Impedance: 20 k balanced bridging
10 k unbalanced
Input / Output Connectors: Plug-in 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: 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
Overall Dimensions: Height: 2.30 in. 5.85 cm
Width: 3.25 in. 8.26 cm
Length: 6.04 in. 15.3 cm
Installation/Operation
Declaration of Conformity available from rdlnet.com.
Sole EMC specifications provided on product package.
Specifications are subject to change without notice.
Radio Design Labs Technical Support Centers
U.S.A. (800) 933-1780, (928) 778-3554; Fax: (928) 778-3506
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
891-2115C
COMPRESSION
OUTPUT SIGNAL
-40 dB -20 dB 0 dB
20 W
-40 dB
-30 dB
-20 dB
-10 dB
0 dB
INPUT SIGNAL

Especificaciones del producto

Marca: RDL
Categoría: receptor
Modelo: FP-PA20A

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