This came up in a discussion I'm having offline about the King Biscuit quad (SQ encoded) aka 'preFM' reels that are often discussed here.
These (matrixed half-track 2 channel) reels must originate from well *before* the loss of King Biscuits master stereo reels in a building fire. Anything 'official' generated from those shows after that (e.g. the stereo mixes heard on Wolfgang's Vault since 2006 or so, and any CD releases from the KB vault) are 'new', nonencoded stereo remixes from multitracks (which would seem to still exist?!) .
As I understand it, back in the 70s a quad encoded halftrack/2-channel master mix was created by King Biscuit from concert multitracks, and duplicate encoded reels were then sent to various radio stations for broadcast. Later some of these 'preFM' encoded reels ended up in collector's hands, and are the claimed source of 'preFM' digital quad collectibles.
However some so called 'preFM' decode quad files I have in my collection show a clear cutoff at 15kHz. Others do not have this cutoff. Am I right to assume that the ones with the cutoff aren't really from preFM reels, but rather from broadcasts taped off the air? Would these show a very sharp 15kHz cutoff like I see?
These (matrixed half-track 2 channel) reels must originate from well *before* the loss of King Biscuits master stereo reels in a building fire. Anything 'official' generated from those shows after that (e.g. the stereo mixes heard on Wolfgang's Vault since 2006 or so, and any CD releases from the KB vault) are 'new', nonencoded stereo remixes from multitracks (which would seem to still exist?!) .
As I understand it, back in the 70s a quad encoded halftrack/2-channel master mix was created by King Biscuit from concert multitracks, and duplicate encoded reels were then sent to various radio stations for broadcast. Later some of these 'preFM' encoded reels ended up in collector's hands, and are the claimed source of 'preFM' digital quad collectibles.
However some so called 'preFM' decode quad files I have in my collection show a clear cutoff at 15kHz. Others do not have this cutoff. Am I right to assume that the ones with the cutoff aren't really from preFM reels, but rather from broadcasts taped off the air? Would these show a very sharp 15kHz cutoff like I see?
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