All posts by Nyal Mellor

Building the Acoustic Frontiers Demo Room: Part 1

Let me present to your our latest project – the Acoustic Frontiers demo room! I have been carefully piloting the course to a dedicated demonstration facility for at least 18 months now. This demo room will encapsulate and explain all the things we can do as a company. Here are some of the key details:

  • Dedicated ‘media’ room, supporting a world class two channel listening room and home theater
  • Four power circuits feeding the room – two dedicated to audio (one 20A 120V and one 20A 240V). The 240V is to feed a nice big balancing Torus isolation transformer.
  • Sound isolated using double drywall, Green Glue, isolation clips / hat channel and rubber underlayment
  • Featuring high efficiency, compression driver / constant directivity horn speakers by Procella (we just signed up as a dealer, blog post to follow on these amazing devices)
  • Incorporating at least one and possibly two DEQX HDP-4s for speaker and room correction
  • Highlighting an electrically retractable 4K Seymour Screen Excellence screen
  • 4 subwoofers in a mode cancelling layout
  • Projector in a hush box (hopefully the RED one!)
  • And of course acoustic treatment and final system calibration by our good selves

The Schroeder / Transition Frequency Explained

Brent Butterworth, a writer over at Sound & Vision, has written a very easy to understand explanation of what the ‘Schroeder’ frequency is. The Schroeder or ‘transition’ frequency is a critical concept to understand because it explains a lot about how sound behaves in rooms, how we measure / analyze them and how we treat […]

Power and Grounding: The Acoustic Frontiers Approach

We recently spent some serious research & development time developing what could be called the Acoustic Frontiers approach to power and grounding for audio, home theater and studios.

Here are some of the juicy topics covered on our power pages:

  • Why should you care about how your system is powered and grounded?
  • What is the anatomy of the power and grounding system feeding your AV gear?
  • Do you know that there are 8 power and grounding issues that can affect the performance and lifespan of your AV system?
  • What are the causes and cures of 60Hz hum and powerline harmonic buzzing?
  • Why are 99% of all (Metal Oxide Varistors) no good for AV equipment?
  • Why do you need a UPS for your projector?
  • What is the concept of whole room power conditioning?

SurgeX Powerframe 420

Home Theater Calibration 101: Speaker Levels, Distances and Subwoofer Phase

Introduction This blog article will teach you about home theater calibration – in particular how to calibrate the audio side of your home theater pre-processor (pre-pro) or audio visual receiver (AVR). I’m not going to cover the video side. The three basic elements of audio calibration in home theater setup are: Speaker and subwoofer levels […]

Four approaches to room acoustic measurement

This article covers the four main ways in which you can measure your room’s acoustics. In decreasing ease of use order these are: Integrated software / hardware packages such as XTZ Room Analyzer and Dayton Audio Omnimic Standalone software packages and your choice of measurement microphone, cabling and soundcard such as Room EQ Wizard Hardware devices such […]