Rane MA 3 Mutichannel Amplifier NEW!

 Rane MA 3 Mutichannel Amplifier

The Rane MA 3 is a three-channel amplifier designed to operate in commercial environments, such as paging, foreground music and background music distribution. Up to three optional 40 watt, 70.7 volt or 100 volt constant-voltage audio transformers may be installed inside the amplifier, eliminating the need for external wiring or transformer mounting.

The MA 3 uses a conventional linear power supply with toroidal transformer. This configuration minimizes the emissions associated with switching supplies and noisier transformer designs. The power supply features independent secondary supplies for each channel, minimizing load regulation interaction and crosstalk.

Thermal management is accomplished in the MA 3 with a sealed heat-tunnel design incorporating low velocity forced air and large aperture openings. This design minimizes the noise usually associated with forced air-cooling and eliminates the need for an air filter. Forced air-cooling allows the amplifier to operate reliably in harsh environments and avoid the buildup of heat in unventilated racks associated with passive convection cooling.

Dynamic protection circuitry completely safeguards each channel against over-voltage, under-voltage, overloads, transients from inductive loads, thermal runaway and instantaneous temperature peaks. Biasing is not allowed to occur when an under-voltage condition exists, reducing turn on and turn off transients. Fast-response limiters allow the MA 3 to tolerate up to 20dB of overdrive into 8 and 4 ohm loads while holding THD below 1 percent. This means no loss of speech intelligibility or harsh clipping, and greatly increases the dynamic range of the system without the use of external limiters.

The peak-responding, load-adaptive meters of the MA 3 accurately indicate the remaining headroom. The meters are helpful in setting system levels and indicating signal compression. Internally selectable 80Hz high-pass filters offer protection against over excursion of small bookshelf speakers and saturation of distribution transformers at low frequencies.

• Three independent amplifiers in a single enclosure

• Load sensitive dynamic limiters and headroom meters

• High capacity linear power supply

• Separate input level controls on the back panel allow convenient level balancing of all channels

• Sealed heat-tunnel forced air cooling

• 80Hz high-pass filter selection

• SPiKe Protection Circuitry

Safeguards each channel against over-voltage, under-voltage, overloads, transients from inductive loads, thermal runaway and instantaneous temperature peaks

Power Rating

Each channel delivers 60 watts of continuous average power into 4 ohms, and 40 watts into 8 ohms (all channels driven)

Damping Factor

80 (minimum) into 8 ohms @ 1kHz

Input Sensitivity

Off to 0dBu

Input Impedance

20k ohm each leg

Gain

27dB

Frequency Response

20Hz to 20kHz

Signal-to-Noise Ratio

90dBr, A weighted

Total Harmonic Distortion (THD)

0.05% - 1kHz, 40W, 8 ohms

Input Connections

3 x Euroblock

Output Connectors

3 x Euroblock

Controls Front Panel

Power switch

Controls (Rear)

3 x Rotary level control
Fan speed switch

Indicators

1 x 4 LED level metering per channel

Cooling

Two speed fan, sealed tunnel

Power Consumption

33.6W @ idle

Dimensions

19" x 9" x 3 1/2"

Weight

30 lbs

Specialties

Three independent amplifier channels to suit a wide range of applications