All posts by Nyal Mellor

THX reference level explained

What is ‘THX Reference Level’? Reference level is a calibrated volume setting used for both movie production (in dubbing stages and post production houses) and reproduction (in screening rooms and theaters). The human hearing system is non-linear, especially in the bass, so having a consistent playback level – a reference – is critical if the […]

Parasound Halo amplifiers – A21, A31, A51, A23, A52

“When it comes to high-performance, high-value power amplifiers, few do it better than Parasound.”— Andrew Robinson, Home Theater Review   Why do we use Parasound Amplifiers? Superb sound quality thanks to the design skills of the legendary audio designer John Curl and the use of balanced, high bias class A/AB topologies. There have been a […]

Acoustic Frontiers White Papers and Articles

“The true sign of intelligence is not knowledge but imagination.”— Albert Einstein   We at Acoustic Frontiers do not stop at “the basic” industry certifications and qualifications. In acoustics in particular we continue to drive industry thought leadership as demonstrated by the articles and white papers we publish. Acoustical Measurement Standards for Stereo Listening Rooms […]

Deconstructing the home theater pre-processor

Ahhh….the home theater pre-pro….my thoughts on them are basically
summarized by the phase “can’t live with them, can’t live without them”!
Modern pre-pros are the brain of all modern home theaters. An AVR
(audio video receiver) is essentially a pre-pro and multi-channel power
amplifier in one box. Pre-pro’s do a number of essential things without
which it would be virtually impossible to watch movies in surround

Building the Acoustic Frontiers Demo Room – Part III: Paint, Star Ceiling, Lights and Carpet

It’s been quite a while since the last blog update on the Acoustic Frontiers Demo Room. However I am happy to say that there has been a lot of progress, although the room is still not finished! The room is already ‘up and running’ in the sense that it can be used for music and movies but there are still some areas we are working on and a couple of key items that still need to be installed. Today I am going to give a update on the interior decoration and fit out of the room.

Yes, we can now measure loudspeaker directivity with lasers!

It’s been just over a year since the UK’s National Physical Laboratory first released information on their innovative laser-based acoustical mapping technique. Thanks to UK loudspeaker company PMC we now have a real life use case for this technology – using lasers to study the dispersion characteristics of loudspeakers. All speakers have off axis frequency […]

Audyssey XT32 vs. Parametric EQ: A Comparison of Manual vs Automagic Calibrations

Setting the Stage for Battle! Earlier this year Acoustic Frontiers had the opportunity to improve a two channel and home theater system in Tucson, Arizona.  Our client owned a Polk / Onkyo system which incorporated the latest Audyssey XT32 ‘room correction’ algorithms. However he was unhappy with overall sound quality and wanted to know how […]