hi all!

first post here. few years back i did a bit of research on this forum and ended up with the set up i have today: denon pma1500 R-ii amp, pro-ject debut mkiii, and polk audio lsi9's.

i'm very happy with the system, it sounds fantastic. now i have another room to furnish in the house and i'm hoping that you guys can help me out! a friend of mine has an old sanyo stereo system (dc 8500K). it's a mid 70s quadrophonic system. when you play vinyl on it it sounds beautiful. it has a really smooth and warm sound and deep bass. i don't know what it is? i want to achieve a similar sound. it doesn't have the clarity of my lsi9's, in fact it's sound has a different character all together. my current set up doesn't have the warm, deep bass that this old system does. is it the modern speakers and modern turntable?

here is a picture of the model i'm talking about (someone is selling on ebay): http://cgi.ebay.com.au/Sanyo-HiFi-4-...6#ht_500wt_958

does anybody have any ideas what i should be looking for? is it the turntable, the amp or the speakers? could i use my current amp and turntable, and change the speakers to get a similar sound? some older, larger vintage speakers?

appreciate any advice...