Linkwitz-Riley filters may sum well electrically, but not acoustically. For this reason I think their best function is as targets, but not a generic crossover filter design recommendation. For example: 👎 "Using LR24 filters will give you a flat acoustic frequency response through the crossover region." 👍 "Using LR24 targets will give you a flat acoustic frequency response through the crossover region." Then, choose whatever filters are appropriate to hit the … [Read more...]
Subwoofer Alignment at The Redmoor Cincinnati
Recently I had the opportunity to help my friend Nick work on the calibration of some new components at a great looking venue in Cincinnati called The Redmoor. We met on TeamViewer and recorded the entire thing so that it could serve as a combination of consultation and training. If you'd like my help on your project, you can schedule an appointment here. In this post I'll walk you through some of the EQ and crossover alignment steps we took. Pre-production First, gather materials. I … [Read more...]
Do subwoofers need time alignment?
It's really important to get the low end right at live events. Research has shown that 3/4 of what people consider to be high quality sound comes from the low frequency content. Subwoofers are a big part of that low frequency content, supporting and extending its capabilities. However, subwoofers also require careful setup and alignment to ensure optimal performance. If you’ve ever had trouble getting your low end right, then you might want to read this article. It will explain why … [Read more...]
The Public Library of Loudspeaker Measurements
Imagine a library of loudspeaker measurements where you could look up the frequency, phase, and impulse response of any speaker in the world. What questions could you answer with it? Am I doing it right? Have you ever measured a speaker for the first time and realized you have no idea what you're looking at? I have!Are my speakers phase compatible? I have to set up a system with RCF mains and QSC front-fills tomorrow. Will they play well together?Is my speaker working correctly? Do you … [Read more...]
Are you still trying to align your subwoofers with an audio analyzer?
The challenge of collecting and interpreting high-quality, low-frequency data with modern audio analyzers leads to user error and misaligned subwoofer crossovers. We need a simpler, more reliable approach. tl;dr Crossover alignment is hard.We need a database and mobile app to make it easier.Fill out this survey: Should I build a sub alignment app? Seeing actionable data in our audio analyzer for the main to subwoofer crossover frequency range is like seeing a shooting … [Read more...]