The basic amplifiers are cost effective alternatives to the regular Praesideo power amplifiers, for situations where no built-in digital signal processing functions, such as equalizers, delay and AVC are required. They do not have a Praesideo network connection. Instead, these amplifiers are connected to the Praesideo network via the PRS-16MCI Multi Channel Interface, which provides the basic amplifier with audio signals and has full control. There are four versions, the PRS-1B500 (1 x 500 W), PRS-2B250 (2 x 250 W), PRS-4B125 (4 x 125 W) and the PRS-8B060 (8 x 60 W).
The basic amplifiers are completely supervised and fault events are reported via the multi channel interface to the Praesideo network controller.
The basic amplifiers provide connections for separate group A and group B loudspeakers for each zone, and support class-A loudspeaker loop wiring. The units should be mounted in a 19"-rack with the included mounting brackets.
- High efficiency class-D amplifier channel(s)
- Switched mode power supply
- Local audio inputs
- Mains and battery operation
- Complete supervision
Characteristics:
- Signal-to-Noise Ratio : >85 dB with pilot tone off
- Storage Temperature : -40 to +70 ºC (-40 ºF to +158 ºF)
- Total Harmonic Distortion : <0.3% (1kHz) at 50% of rated power
- Air Pressure : 600 to 1100 hPa
- Relative Humidity : 15 to 90 %
- Cross Talk : -70 dB (1 kHz) nominal (only multichannel)
- Main Power Consumption : 395/62/16 W
- Local Audio Input : 0 dBV (symmetrical)
- Product Weight : 15 kg
- Product Weight : 33.07 lbs
- Rated load resistance : 80 ohm (100 V); 40 ohm (70 V)
- Rated load capacitance : 60 nF (100 V); 125 nF (70 V)
- Rated output power (per channel) : 125 W (1 min. at 55 °C)
- 60 W (30 min. at 55 °C, cont. at 30 °C)
- 30 W (cont. at 55 °C)
- Mounting : 19 inch rack
- Color : Charcoal with silver
- Minimum Frequency Response (Bandwidth) : 60 Hz
- Minimum Frequency Response (Bandwidth) : 0.06 kHz
- Maximum Frequency Response (Bandwidth) : 90000 Hz
- Maximum Frequency Response (Bandwidth) : 90 kHz
- Number of Outputs : 4
- Number of Watts Per Channel : 125 Watt
- Dimensions In front of brackets : 40 mm (1.6 in)
- Dimensions Behind brackets : 360 mm (14.2 in)
- Battery Power consumption : 375/48/9 W
- Dimensions rack use, with brackets : 88x483x400 mm