I have no idea about Fremer's income or wealth but it is not within most of our budgets to custom design a room, i. e. doors and windows will fall where they may and room size was set long before we move in by the designer. Is it possible that a room doesn't need bass traps?
All small rooms (under 4,000 cubic feet of volume) have room modes and could benefit from bass trapping.
Rooms basically have two acoustic components, separated by what's known as the Schroeder frequency (typically around 300hz in home rooms).
Below that, the frequency issues are modal and much like waves, they build up and reinforce or cancel.
At frequencies above, they reflect and bounce around much like billiard balls.
Each type of acoustic issue needs to be treated with a unique set of treatments and placement approaches.
A totally untreated room, even if designed to have ‘ideal’ ratios and all that, can sound horrible compared to a well treated one.
Case in point: My theater was designed around my Monoliths and Sequels , and it has ‘ideal’ acoustic ratios along with a generous 3,800 cubic feet of volume. I did this design back in ’98, and built the house in ‘99/’00.
Ever since, I’ve had the Monoliths and the Sequels, powered by Sunfire amps as constants in this equation. Over that time, the room has gone through several iterations of room treatments (documented in detail here on the MLC –
part 1 ;
part 2 )
The initial overly reflective surfaces caused massive ringing at high volumes. It was not pleasant to listen to the system at reference levels. Bass modes made it even worse down low.
When I introduced an incredibly capable
Subwoofer back in ’04, I had cleaner bass, but now overpowered the room even more at its modal frequencies, which robbed me of being able to hear the true depth and accuracy of my new sub.
Fast-forward to ’09, and after $15K of room treatments carefully chosen and placed based on actual measured responses, the bass is now what I’d categorize as world-class. I’ve never heard better, and neither have the folks visiting.
Mid and highs are also incredible.
Listening to a well recorded DVD-Audio in multichannel on this rig at 90+ dB avg levels (peaks into 108dB) is pleasurable, and one hears every nuance in the recording. And not some ‘audiophile’ overly polite stuff either, this is using Porcupine Tree – Fear of a Blank Planet, which is pretty heavy Prog rock (but oh so well produced and recorded).
Therefore, if even an ‘ideal’ room required that level of effort to ‘get right’, the average room with windows doors and whatnot, untreated, is an acoustical nightmare in my book.
Using one for audio reviews robs the author of much credibility in my view.
[Clearly had too much coffee this am
]