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receiver, the number of points that can be measured is the only difference in the MultEQxt
system.
(i) AVR-5805 and 4806 offer 8 points of measurement
(ii) AVR-4306, 3806 and 2807 offer 6 points of measurement
9. Does the microphone have to be placed in each seat?
No. The ideal calibration consists of 6–8 measurements that encompass the listening area. It is
important to have the microphone in the “main” listening position for the first measurement so
that the delays are calculated correctly. After that, the mic should be moved around so that it
covers an area within which listeners will be seated.
10. Is the supplied Denon microphone calibrated?
Yes, the Denon microphone is calibrated to a ¼” industry-standard measurement microphone.
The correction is applied to the measurements as they are being taken. It is important to use
ONLY the microphone that comes with the Denon A/V receiver, as the calibration curve built-in
to the receiver is specific to that microphone. It is also critical to point the microphone upwards
and to place it at ear height. Any other microphone will have different characteristics and thus
will not produce the right results. Denon offers (2) different models of microphones, the DM-
S305 (AVR-5805/4806) and DM-S205 (all other AVRs featuring Auto Setup and/or Room EQ)
microphones have different calibration curves and are NOT interchangeable.
11. Does MultEQxt eliminate the need for acoustic treatment?
No. Although MultEQxt will improve sound significantly in untreated rooms, a properly treated
room calibrated with MultEQxt can achieve stunning results throughout the listening area.
12. How well does MultEQxt work at low frequencies?
This is one of the unique strengths of MultEQxt. Room correction methods based on parametric
equalization do not have enough bands or processing power to apply correction in the bass
frequency range. MultEQxt uses a unique implementation of FIR filters that achieves very good
resolution at frequencies below those that standard FIR filters can reach. The resolution of the
MultEQxt filters varies with frequency and this allocates more of the filter correction power
where it is needed the most: in the lower frequencies.
NOTE: Early production models of the AVR-5805 and 4806 did not accurately process low
frequencies, however firmware has been released to correct this. Please visit the product pages
for each model on the Denon website, www.usa.denon.com/ProductDetails/AVReceivers.asp
,
for more information.
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