Equalising to a Preferred Curve
Whilst the Auto EQ function tries to equalise to flat (as measured by the DN60) it is possible to perform an approximate Auto EQ to a preferred house curve by making use of the Bypass setting of the DN3600.
To do this set up the house curve on the DN3600, or Recall the desired curve from memory (the memory itself will not be modified by the Auto EQ function). Connect the DN60 and DN3600 as defined in 1. above. Inject pink noise into the system as defined in 2. above. Measure the room response as described in the DN60 operators manual. Bypass the DN3600. Perform the Auto EQ function once and once only. Do not iterate.
Note. The spectrum display may be"frozen" by saving it to a DN60 memory and switching to mem. mode.
The room response is corrected subject to the Auto EQ adjustment limit of
The reason for performing the Auto EQ function only once is because the measured spectrum of
the pink noise is not modified by the DN3600. With the equalise to flat connection defined above each iteration brings the overall system response (including the DN3600) closer to flat. With the DN3600 bypassed this cannot happen. Hence the same correction factor would be added each time.
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