Forced-air cooling keeps heat away from other equipment. The high efficiency “heat tunnel” design allows the amplifier to process severely compressed signals reliably even when installed in a rack with elevated ambient temperatures. Other Rane equipment may operate next to the MA3 in a rack. Very low emissions allow the amplifier to operate in close proximity to signal processing equipment without causing excessive interference. It is specifically designed to operate in demanding commercial applications. The MA3 Amplifier drives all three channels at the continuous average rated power, indefinitely. These filters are shipped in the “off” position from the factory. Internally selectable 80 Hz highpass filters for each channel offer protection against over excursion of small bookshelf speakers and saturation of distribution transformers at low frequencies. Rear panel Level controls allow amplifier sensitivity adjustment. Euroblock output connectors accept up to 12 gauge wire. The meters are helpful in setting system levels and indicating signal compression.īalanced inputs with Euroblock connectors are provided.
Peak-responding, load-adaptive meters accurately indicate the remaining headroom. This feature greatly increases the dynamic range of the system without external limiters. This means no loss of speech intelligibility or harsh clipping. Biasing is not allowed to occur when an under-voltage condition exists, reducing turn on and turn off transients.įast-response limiters allow the MA3 to tolerate up to 20 dB of overdrive into 8 and 4Ω loads while holding THD below 1%. SPiKe®* dynamic protection circuitry completely safeguards each channel against over-voltage, under-voltage, overloads, transients from inductive loads, thermal runaway and instantaneous temperature peaks. The combination of a solid, conservative power supply and forced-air cooling allows the MA 3 to simultaneously deliver 40 watts of continuous average power into 8Ω and 60 watts into 4Ω. The power supply features independent secondary supplies for each channel, minimizing load regulation interaction and crosstalk. This configuration minimizes the emissions associated with switching supplies and noisier transformer designs. The MA3 uses a conventional linear power supply with a toroidal transformer. The MA3 is an ideal amplifier with Rane’s paging, foreground music, and background music products, the Rane CP52S, CP64S, CP66 and DA 26S. This amplifier was specifically designed for use in: The MA3 is a three-channel amplifier designed to operate reliably in commercial environments.
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