Pioneer VSX-921 - Manual (Page 18)

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How to Interpret the Graphs (Continued)
Case 3: Specific frequency shows unusual reverb characteristics
There is probably something in the room that affects the reproduction of that frequency. If possible, try to
find an arrangement that reduces the effect.
Case 4: A specific channel is slow to start
This can happen when a speaker is unstable. If possible, we recommend that you try to stabilize the
speaker stand, to bring the characteristics of that channel into line with the other channels.
In all of these cases, when the “Full Auto MCACC” operation is performed, the calibration time position is
selected automatically in consideration of the room’s characteristics so that the optimum sound field can be
achieved. (See the receiver’s Operating Instructions.)
When measurements are made with the “Auto MCACC” function, automatic calibration taking the
reverberations into consideration is only performed when “ALL”, “Keep SP System” or “EQ Pro & S-Wave” is
selected at “Auto MCACC”. (See the receiver’s Operating Instructions.)
Note
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