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RE: There is no such thing as an audio system without limitations and flaws

It was a 7 foot grand piano. No problem. Indeed, it was possible to play back at slightly louder than normal volume without distortion but it was unnaturally loud. In fairness the bottom half octave on the keyboard was not used in the comparison. Based on a few tests, these bottom three notes were slightly weak. The difference could just have been due to the piano being in a corner and the speakers mid-wall. The speakers were Snell AIII's and were driven from with 200 watts per channel. An earlier attempt to play this recording in the same room using a MAC-275 driving a pair of AR-3s didn't have sufficient headroom for a successful result.

There are a few instruments that would fit into the room that might not cut it, especially a large bass drum, although most bass drums seem to peak around 45 Hz. The Snells supposedly go down to 24 Hz. Obviously no 32 foot organ stops, either, but the pipes wouldn't fit in the room. These instruments would not be featured in any legitimate live performance one might have in one's living room.

The key to live vs. recorded demonstrations is primarily in the choice of recordings. The recordings have to be very dry (little or no ambiance) so that when played back the only ambiance comes from the listening room. Most recordings are made to create the illusion of transporting the listener to the original venue, and that's something that is not really possible with a two channel recording. During the 1960's, Acoustic Research did a series of demonstrations of "live vs. recorded" playback using the Fine Arts String Quartet. The recordings were made outside so there wouldn't be any ambiance.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar

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