Not an huge fan of Andy Wallace mix as I am fan of Tom work.
In fact if I was asked to make a fav mixer for pop rock/modern rock list I would pick two names: Tom Lord Alge and Ben Grosse
But back to OT, what do you want to know (can help a lot for BC)? Technical aspects or just fav mix preference?
Common point between the four you listed (and it where the mix wideness come from) is SSL 4000 E/G. That simple.
For explain a bit about it, if you pan your guitar hard left and righ ITB, perception of wideness limit come from where your speaker are.
Now you put the same tracks on a console, pan hard left and right; and your guitar seem to come from 1 feet wider than where your speaker are.
So your mix is wider, and your center is also cleaner. So you get more space for your important element like kick, snare, bass and vocals.
Will pass on CLA since everyone know is chain, way he work...etc.
I know really little about Andy W.
He mixed 90% of his career on a ssl 4000 G with G+ computer and ultimation, never operate PT by itelf. Lttle to no outboard (Drawmer gate sometimes), old LA2A on vocal back in the day. Genelec 1031A and ns10 for monitor.
Andy mix at really low level, so low you can hear a mouse walk in the room according to some peoples (JJP at Pensado place).
He heavily automate everything section by section (he is the master of transition), and instrument by instrument, note by note.
Riding is bass by hand, note by note for get constant rms level. His mix have huge and tigh low frequency control.
He use a couple of drum samples (put on a DAT) for triger is reverb.
Automation wise Andy use 3 VCA channels for his drum: vca1 > kick, vca2>snare and snare samples, vca3 for all other drum elements.
That all I know for him sorry
Now Tom Lord Alge
Tom mix at South Beach studio (Miami).
Chain is PT HD8 feeding his 3348 (24bits, Chris use the original 16bits version and feed his rig from tape) digitally via an AES to Madi format converter. The sony feed his ssl 4064G+ with ultimation.
One biggest difference between Chris and Tom: Chris assistant use PTHD7 for edit, and organise PT session, after that everything is printed to the 3348. So Chris operate mostly from tape. Tom in others hand are since this years on PTHD8 (was before with 5.6) and he operate himself PT. His assistant only edit/preparing sessions.
Lot of great hardware (use his Neve comp for repairing work) but ton of his fx are done ITB (echofarm and others). His guitars are 100% ITB and lot of his eqing are done with the D2 from focusrite. Monitor are ns10, sony boom box and Genelec 1034A for the main.
Listening at conversation level with his ns10, low level on the main.
He also do all his fader ride listening through headphone.
Slamming compression on individual channel and 2bus sometimes. Compressor for character and automation for dynamic.
2bus is generally ssl quad bus or his focusrite red3 (kissing the red in this case).
Tom is passionnate, love music. He also a great engineer, fast at help and really meticulous with what he doing.
here an interesting thread on gearslutz
And a cool video with Tom
http://www.youtube.com/watch?v=S4-q0_toK5Q
Don't know if all this are what you looking for but anyway hope that help.
PS: if someone have more info about Tom, share
