Good sounding 70's live LPs...

Good bass from live albums (vinyl) of the 70s includes:

ZZ Top - Fandango
Brand X - Livestock
Genesis - Seconds Out
Supertramp - Paris
Albert King - Blues Power
Outlaws - Bring It Back Alive
The Who - Live At Leeds (new remastered from Classic)
King Crimson - Red

From the 80s:
Peter Gabriel - Plays Live

I'm sure I'll think of a few more

Don't know if it is 70's, but Deep Purple Made in Japan is great. I also think Bob Seger "Live Bullet" is very good. I will have to think about this some more.

There's a nice one by the Allman Brothers... at the Fillmore, I think.