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Nyal Mellor is Chief Acoustician for Acoustic Frontiers, a company that specializes in improving the sound quality of your high end audio or home theater system through acoustic design consulting and advanced system set up processes.
Monday, August 16, 2010 at 3:44PM Today I’m going to look at room correction products specifically designed to be used with subwoofers only. Included in this article is examination of products by Audyssey, Velodyne, DSPeaker and SVS.
Audyssey, DSPeaker, SVS, Velodyne in Room Correction Saturday, July 10, 2010 at 1:46PM According to Stereophile magazine, the top ('A' ranked) room correction or room EQ devices are the: Audyssey Sound Equalizer; Meridian 861 with MRC room correction; Rives Audio sub-PARC / PARC; SVSound AS-EQ1; Velodyne SMS-1 and the Z-Systems RDP-1 Reference. This article explores the pros and cons of each device from a purely functional perspective...here is an excerpt from the section on the SVSound AS-EQ1: "Designed for use with either single or dual subwoofers, the AS-EQ1 is based on a implementation of Audyssey's DSP room EQ code. Plug in the included measurement microphone and install the custom Windows based software onto your computer and you are ready to go! Because it uses Audyssey code many locations in the room are measured (up to 32) before the correction filters are generated. This makes it particularly suitable for use in a multi-seat home theater where the bass response and therefore degree of correction required will vary significantly from seat to seat"
Thursday, July 1, 2010 at 2:23PM Much confusion still exists about what a room correction product does, what problems it can (and cannot) solve and therefore its 'place' in a modern high quality sound reproduction system. Part of the challenge of understanding room correction is that it requires a reasonable level of understanding of sound quality, acoustic science, acoustic measurement and psychoacoustics (how humans perceive sound). The majority of the articles I have read online or in print magazines do not cover the fundamentals in enough depth to allow the curious and committed reader a chance to understand room correction on anything more than a cursory level. By the end of this article I hope that you will have learnt enough to judge for yourself what room correction can and cannot do and how best to apply it in the context of a world class music or home theater system.
Audyssey, Meridian, TACT in Room Correction 
