What Quad's do you have?
Sold all that stuff at one time or another.
Fav was JVC -5446. but also liked the Sansui stuff.
And what Quad LP's do you have? Really wish I would have saved that.
I have a whole mix of classic stuff that I pretty much blend together..
Infinity & Sansui,, for my music room Bass playing ''to'' system speakers.
Amp on that is a vintage early 80's ''natural sound'' Japan made -Yamaha,, with EQ.
Cassette & CD components ,, are classic Pioneer & Sony.
Out in the Man cave garage,, I have an old Pioneer - Super tuner 3 -''240w''- ''car'' CD deck,, that I have set up with 3 - 12 volt batts. ''in parallel'',, with a total of over 24ah of capacity,, off a MM 1000 electric Mini bike,, that I converted to Lith. Ion.
Quad Speakers on that,, are old vintage 'killer'' 6 by 9 ''Clarion'' co ax's,, & 2 - 6 by 9 classic Pioneer - 4 way 300 watt.
Got them all in ported cabs I made,, & they sound ''epic '' !!
Can usually run that ''semi cranked'' for around 3+ hrs. on a charge.
Also have an old ''Japan made'' - ''AIWA''- Karokee 350w. ''awesome'' system out there, with powered subs,, that also has an integrated BBE ''sonic maximizer'' ect. with adjustable processing & EQ ect.
Added,,
If I understood you right on LP's,, I still have the '''original A&M'' - ''Styx Equinox'' on LP,, that I purchased new in 76'.
Don't think there was a better LP ever made for ''multi speaker shift'' than that one .