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.