Not sure how aggressive the LP SQ (correct term?) mix was but I was expecting something a bit more than ambiance from the surrounds.
SQ= "Stereo-Quadraphonic". 4-2-4 matrix system developed by Columbia in the early 1970s. The original 4-channel mix is folded down to stereo with a specialized encoding device and recreated in the home of the consumer with a decoding box. Unfortunately when an SQ LP is decoded the instrument positions are blended together and don't represent the actual mix as intended- how closely it resembles the original mix depends on how good the user's decoder is.
Lotus is a perfect example of this- the actual mix has very little content in the rears, yet when the SQ LP is decoded sounds from the fronts find their way into the rears at a slightly lower volume. See Jon's post upthread for a comparison between this new SACD and the AF Stereo SACD (which is the same as the SQ LP) run through the Involve Audio Surround Master (developed several years ago with modern engineering- one of the best SQ decoders).
Usually Columbia made their quad mixes extremely active and discrete to compensate for the loss of separation due to the SQ system- The Jeff Beck quad mixes released on SACD (Blow By Blow, Wired, Rough & Ready) are a good example of that kind of extreme separation. The only Columbia quads I've heard that aren't mixed that way are Neil Diamond's Serenade, Herbie Hancock's Secrets, and Lotus.
Not sure why they didn't mix Lotus more aggressively- it's obvious today that a mix this subtle would never work on SQ LP. Some active mixes don't even decode well!
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