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« on: June 03, 2007, 08:43:03 PM »
I've been picking up a few 2-tracks out of curiosity, and that acetate tape, if it was wound correctly has aged quite well. I remember from my teens when polyester tape came out and was touted as so superior, but the older Scotch 111 class of tape on 2-track releases regardless of the maker has really stood the test of time, again as long as it was wound properly. A few Living Stereo's in 2-track tape are quite magic.
I don't enjoy Ampex 4-track stuff much 'cause their non-Dolby stuff compensates for the noisy 4-track format with some pretty aggressive high-end equalization that's hard to eq back out. They even have a bit of hi boost in Dolby tapes, though less, in general. BC was much closer to flat than any previous tape vendor.
In my self-appointed role as know-it-all here's an odd tidbit. The BC Mercury Ancient Airs and Dances notes that they used a new mix from the original 3-track master. And indeed it's a bit different than the Wilma Cozart supervised CD re-mix version. I don't have an original Mercury LP so I don't know what the baseline is, but the BC, especially in headphones isn't so super-stereo with everything bunched up extreme right or extreme left, and I like it better than the CD re-issue. Haven't compared it to the any other releases either like the SACD or the Speaker's Corner LP. Other weird stuff. Early tapes were dubbed 4:1. For some reason some sort of 180Hz buzz in the duplicator gets translated down to a noticeable 45Hz. That's not there in the later 8:1 tapes, well actually it's just pushed an octave lower where my speakers and headphones don't respond much at all. Sometimes on the European masters the specta show 50Hz at a very low level, but at least I know that's not my equipment.
I agree that Dolby units are a problem, even the pro units. The most common pro-unit on e-bay is the Dolby Labs model 330 which as aimed at cassettes and has a very steep low-pass filter at about 17KHz. One of these days I'll get around to taking one of these apart and trying to bypass the filter and tinker with the amps and capacitors, but until then I use it as-is. I don't think you can really get the true sense of the tapes without listening to some of them in Dolby B because of the dynamic filter effect. The dynamic range just seems to much more natural with the inverse dynamics of Dolby-B playback.
And as far as BC being better than LP's or other tape, I dunno. It really depended on what kind of equipment you had, TT and cartridge or tape deck. By and large LP's, especially since I now have much better playback equipment, often have an edge. But like all things, tapes are a product of the times. LP's were mass-produced, and as the 70's began, mostly by large corporations, run by bean-counters. That meant lots of pops and ticks, and basically lot's of lousy sounding disks. Sure you could find imports or special issues, but tapes solved a lot of the manufacturing problems that were inherent in LP's. Classic Recordings or Speaker's Corner LP's are made essentially by hand in small batches with a religious approach to quality, cottage industry stuff, so they sound great. Barclay Crocker was ahead of them making tapes, not LP's by hand in small batches with the same religious zeal, so they were just a little ahead of the LP renaissance, but doing it with tape.