Оценок - 3, средний балл: 4.7 ( )

Производитель: Denon Размер: 113.78 kb Название файла: Язык инструкции:

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, for more information. 13. Does MultEQxt compensate for loudspeakers placed behind a projector screen? If the calibration is performed with the screen in place, MultEQxt will automatically create filters for behind-the-screen loudspeakers that compensate for the screen loss. 14. What happens to the MultEQxt settings when the parameters are changed? MultEQxt corrects for room acoustical problems. Changes in the tone controls do not change the filter performance. They do change the tonal balance based on the preferences of the customer. The benefit of MultEQxt is that it allows a customer (or installer) tone control setting to work on all program material in a much more predictable way than it would on an uncalibrated system. Changes made to the crossover frequency or “small” and “large” settings of the loudspeakers do not affect the performance of the MultEQxt filters. 15. Is there a danger of overdriving the loudspeakers by using MultEQxt? No, MultEQxt filters are calculated by taking into account the capability of the loudspeaker and the overall gain structure of the system. Limits in correction are imposed at each frequency to prevent the loudspeakers from being overdriven. 16. How can the performance of MultEQxt be measured? Proper frequency response measurement requires the right equipment. This includes a calibrated .” microphone and software that can perform averaging over time and space. Unfortunately, many of the programs available on the internet or elsewhere do not perform room measurements correctly and this can give rise to misleading results. For example, many only allow a single microphone position and do not perform time averaging. The simple solution of using a test disc with sinusoidal tones and a sound pressure level meter is also inappropriate for measuring room responses because of the sensitivity of sinusoids to standing waves. For recommendations on proper room measurement techniques and software please contact Audyssey Laboratories directly, ...

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