This was the hot setup while in school, Concord-505, ADS Powerplate, 4-ADS 300I's,
or if you were middle class you ran the Blaupunkt 2001 with Loudness button,Blaupunkt 60 watt equilizer, and 4-6X9 Jensens.
Geez, cant believe I just recalled that info, scary.
Bud.