fizzywiggs post about Dieter Dierks piqued my interest and I went through the quad discography because I vaguely knew there were a bunch of SQ quad releases that originated in Germany. It turns out that Dierks was involved with most of them, either because they were mixed at his studio (Dierks Studios) or he engineered, mixed/remixed or produced the albums himself. See below:
(The titles with no square bracket attribution are German titles I have no info on.)
[1] -
Wiki page credit for either engineer, producer, mix or remix
[2a] - Discogs: Recorded by Dieter Dierks / Recorded at Dierks Studios
[2b] - Discogs: Recorded at Dierks Studios
[2c] - Discogs: Engineered by Dieter Dierks / Recorded at Dierks Studios
Ash Ra Tempel - Communication: The Best Of Ash Ra Tempel
Ash Ra Tempel - Seven Up (1972)
[1]
Ash Ra Tempel - Join Inn (1973)
[1]
Ash Ra Tempel - Starring Rosi (1973)
[1]
The Cosmic Jokers - Galactic Supermarket (1974)
[1]
The Cosmic Jokers - Planeten Sit In (1974)
[1]
The Cosmic Jokers - Tarot (1974)
[1]
The Cosmic Jokers - Self-Titled (1974)
Dzyan - Time Machine (1973)
[2a]
Dzyan - Electric Silence (1974)
[2b] (engineer: Toby Robinson)
Manuel Gottsching - Inventions For Electric Guitar (1974)
[1]
Karthago - Rock 'N Roll Testament (1975) (Recording Engineer: Barry Hammond / Mixing Engineer: Geoff Emerick / Recorded at Chipping Norton Studios, London / Mixed at AIR Studios, London)
Krokodil - Sweat And Swim (1973)
[2c]
Message - From Books And Dreams (1973)
[1]
Mythos - Dreamlab (1975)
[2b] (recorded and mixed by Toby Robinson)
Nektar - Remember The Future (1973)
[1]
Nektar - Down To Earth (1974)
[1]
Nine Days Wonder - Only The Dancers (1974) (Engineer:Barry Hammond / Remix: Toby Robinson / Recorded at Chipping Norton Studios, London)
Nine Days Wonder - We Never Lost Control (1973)
[2c]
Omega - 200 Years After The Last War (1974)
[2c]
Omega - III (1974)
[2c]
Passport - Handmade (1973)
[1]
Popol Vuh - In Den Gärten Pharaos (1971)
Popol Vuh - Hosianna Mantra (1972)
Popol Vuh - Seligpreisung (1974)
[1]
Popol Vuh - Einsjager & Siebenjager (1974)
Popol Vuh - Aguirre (1975)
Popol Vuh - Yoga (1976)
Klaus Suchlze - Irrlicht (1972)
Klaus Schulze - Cyborg (1973)
Tangerine Dream - Alpha Centauri (1971)
[1]
Tangerine Dream - Atem (1973)
[1]
Tiger B. Smith - We're The Tiger Bunch (1974)
[2c]
Wallenstein Symphonic Rock Orchestra - Cosmic Century (1973)
[1]
Wallenstein Symphonic Rock Orchestra - Stories, Songs & Symphonies (1975)
[1]
Most of the credits are pretty vague, ie they don't say 'quadraphonic remix' or similar, but at the same time I think a lot of these may have been single-inventory releases (ie no separate stereo mix), so it may be possible to attribute credit to Dierks for some of these quad mixes. Perhaps someone knowledgeable about the German quad scene could chime in...