The first stereo that was completely mine (that is, purchased with my own money and something I didn't have to share with my brother or sister) was a Sony rack system. It was composed of a 25 Wpc integrated amp, a tuner, a logic operated cassette deck w/Dolby B-NR and a 'table. The components were separate and were connected by flat ribbon cables that looked like DIN cables. The amp had an AUX input as this was a couple years before CD came out. The speakers were monkey coffins, supposedly 3 ways with an 8" (approx) woofer made of paper with a paper mid and paper cone "tweeter". I never unmounted the drivers, but looking thru the "port" (in reality just a hole cut in them- no tube or anything!) I could see no bracing or stuffing of any kind. And I'd be surprised if there was much of an x-over network at all.
This would've been in the early to mid 80's. The speakers were total crap of course, but the electronics worked adequately. I used them into my college years when I used them to drive my then-new Infinity SM 150's, before I got my Carver CM-1090 integrated amp. Eventually I gave it to my sister, who used it for many years. I think it's in her attic and would work to this day, although some of the lights are burned out. The speakers were junked out for or five presidents ago, and I have no idea what ever became of the turntable.