6
Avoid connecting/disconnecting microphones with the GAIN on a high setting and/or
with the 48V phantom switched on. Switch the PAD on and MUTE the output. This
will avoid huge transients entering the amplifier front end.
Clean the MA-2.2B with a damp cloth and a little detergent. Do not use solvents or
isopropyl alcohol, it may damage the finish and possibly remove the front panel
screen printing.
6] Service
Should you experience any technical problem with your MA 2.2, contact your dealer or
Buzz Audio for recommendations on what to do. The modular nature of the MA 2.2
construction means most electronic faults can be easily repaired by swapping circuit
boards.
For on line support visit our web site; http://www.buzzaudio.com
Buzz Audio Ltd
8 Opawa Street, Blenheim 7201 Marlborough, New Zealand.
Phone +64 (0)3 577-5597
Email; [email protected]
7] Specifications
Min Gain; +14dB (-6dB with pad engaged)
Max Gain; +66dB
Max out level; +24dBu (0dBu ref = 0.775mV)
Harmonic Distortion (direct output);
100Hz 0.005%, 1kHz 0.005%, 10kHz 0.008%.
Common Mode Noise Rejection;
100Hz 80dB, 1kHz 80dB, 10kHz 70dB.
Equivalent Input Noise;
-133.5dB (A Weighted with 150 ohm source impedance).
Bandwidth;
2Hz to 250kHz @ 20dB gain.
20Hz to 250kHz @ 64dB gain.
(with LL1517 output transformer); 10Hz to 200Khz
Slew Rate (direct output); 140V/uS
Input Impedance;
3k ohms/1k2 ohm switchable.
Power Requirements; 230/115 Volts selectable on rear panel.
Package; 1U rack mount. 481W x 44.5H x 300D (mm).
Weight; 5kg