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 70V and 100V 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.
| 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 | Maximum Input Levels: Balanced: +23 dBu Unbalanced: +15 dBV |
| Frequency Response | 50 Hz to 20 kHz (+/- 3 dB) |
| THD+N | < 0.1% (@ 1 kHz); < 0.5% (50 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 | 20W RMS @ 70V or 100V |
| 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 @ 2000 mA, Ground referenced; 24 to 33 Vdc @ 1000 mA, Ground referenced |
| Package Type | Cardboard Box |
| Dimensions (H x W x D) | 2.3" (58.42 mm) x 3.25" (82.55 mm) x 6" (153 mm) |
| Net Weight | 2.18 lbs (0.99 kg) |
| Shipping Weight | 2.395 lbs (1.09 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
