Operation Manual
Auro D12/D156
Connecting Two Auro Cabinets
Power the Auro D12/D15
Microphone Positioning
The Auro loudspeakers provide parallel jacks that can be used as extension outputs for
connecting additional speaker cabinets. Be sure to read the earlier section on imped-
ance to insure a proper connection with your amplier. To link two Auros, connect your
amplier output to one of the Input jacks of the rst Auro. Then connect a cable from
the second connector to an Input of the second Auro.
When selecting a power amplier for your Auro cabinet, it is important to understand
the type of program material that the speaker will be handling. If the material has
frequent transient peaks, choose an amplier that has a power rating not more than
twice the RMS rating of othe Auro cabinet. This will oer extra headroom and deliver a
clear signal to your speaker cabinet. Using a power amplier with a low power rating
will cause a clipped output signal, which may damage the speaker. Be sure to consult
the users manual of the amplier to ensure it has the correct power output for your
speakers.
Reducing Feedback
Feedback is the annoying howling and squealing that is heard when a microphone
gets too close to a speaker, and the volume is high. Feedback results when the micro-
phone picks up the amplied signal from the speaker, amplies it through the speaker
again, and then picks it up again, and so on. In general, it is recommended that any live
mic (a mic that’s on) be positioned behind the speaker enclosures. This will give you
the best level from your system before feedback.