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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: 24 hours in-MG20s and Spectron Musician III posted by Duilawyer on March 26, 2008 at 14:01:42:
but I recommend caution and a good break-in period before making categorical statements.
Here is why: RF noise at a lower level manifests as enhanced 'detail' and 'clarity' when the speakers are capable. We do not hear RF noise directly, but the spurious tones produced when it intermodulates with the audio signal. These tones enhance treble, create a dry midrange, and muddy-up the bass, compared to what you would hear without them. The noise level varies depending on the equipment and setup (including your non-audio appliances and the way your house is wired).
Thus, there can be a little RF noise in an audio system, which sounds much like the enhanced clarity and sense of air that you describe. It takes a lot of tedious analytical listening to detect it, especially when the overall performance of the new equipment is at a higher level and your favorite music is so much more enjoyable.
My reference recording for this is Shirley Horn's _You Won't Forget Me_. This is a remarkably quiet recording with close-mic'd vocals, and any sense of unnatural (rather than intimate) sibilance in Ms. Horn's vocals comes from your playback equipment. The piano recording is also well done, so that you should be able to hear every separate string inside the piano as though it were present. The cymbals in the opening of track 11 should be distinct and the modulation should be apparent.
I agree with you that switching amps can be superior to any linear designs, as long as the RF noise is kept under control. Progress in the technology of manufacturing integrated circuits will continue to make switching amps better and cheaper. However, progress in analog circuits is somewhat slower than what we are used to in digital, because the design challenges are bigger and there are fewer talented designers.
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Follow Ups
- Glad to read your enthusiasm about switching amps... - Al Sekela 10:30:37 03/27/08 (0)
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