In this educational article we describe how to properly do a subwoofer setup and integrate it into a stereo or two channel system using the XTZ Room Analyzer II Standard package. Two channel vs. home theater crossover considerations There are a number of factors which make sub integration more involved in a stereo system than in […]
One of the things I get asked quite often is ‘where is the best place to put bass traps and why?’. This short article will explain a little about what bass traps do and how they work before going on to discuss the three different places where bass traps can be placed.
Room modes are caused by perfect constructive interference between a sound wave traveling between two boundaries. This article provides a high level overview of room modes and their impact on sound quality. Two examples of how to use subwoofers to reduce the impact of these modes on sound quality are explained – placing the subwoofer in a pressure null and destructively driving a mode with two subwoofers.
Deep nulls in the frequency response in the bass region can be caused by phase cancellation between the direct sound wave from a sound producing device and the indirect sound wave that has reflected from a nearby boundary such as the floor, ceiling or walls. This phenomenon is called speaker boundary interference or SBIR for short. This article introduces SBIR and explains how these deep nulls can be ameliorated through use of a subwoofer.