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INSTALLATION
The SDA-1 may be used in a wide variety of project and professional
studio environments. Self-contained in a steel and aluminum
enclosure, the unit is designed for many years of use. For greater
reliability, we recommend that you not place the unit directly under or
on top of other sources of heat. It is important that any rack-mountable
unit is properly ventilated, and the SDA-1 is no exception.
AC Power Hookup
The SDA-1 has an internal switching power supply designed to operate
at 90-125 VAC @ 50-60 Hz. Units manufactured for use outside the
United States of America have been modified to comply with the
required electrical specifications
Audio Connections
Audio connections to and from the SDA-1 are balanced XLR [Pin 2 =
Hot (+), Pin 3 = Cold (-), Pin 1 = (Ground)] and balanced or
unbalanced ¼" [Tip = Hot (+), Ring = Cold (-), Sleeve = (Ground)].
Operation Precautions
Warning: For optimum performance and reliability when running high
continuous signal levels, do not operate the amplifier with a speaker
load of less than 4 Ohms per channel, or any combination of speakers
that together are less than 4 Ohms.
Using one speaker per channel, it must be rated at 4 or more Ohms.
Using two speakers per channel in parallel, they must each be rated at
8 or more Ohms. When in Bridge Mode, the speaker should be rated at
8 or more Ohms.
The amplifier will tolerate 2 Ohm (stereo), 4 Ohm (bridged mono) loads
but running into this low of impedance may cause the protection
circuitry to engage during continuous high-level bass passages.
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