the green buick regal in atlanta how?

Every town or city has their "great" or "king" of bass that has ridin around and ripped a hole in the very fabric of the reality of how loud, strong, and ear shattering bass can go. Well in Atlanta @ 1993-1997 a buddy of mine first witnessed gbody;  a 1982-1986 Buick Regal that had immense power and bass!

My long time friend tells me this story often (and tho I have witnessed it myself) and is just always amazed at how a car (especially at the time) could produce the sound it had. The car was a dark forrest green with white interior and green piping with what seemed to be a hole in the middle of the backseat. From what we know now, the car only had 2 Kicker (the old model svc kind with just kicker in plain letters on the front) 15 inch subs, an Autotek bts7600 (allegedly), mids and highs like you wouldn't believe (before the 104's pyramid and emminence super tweeters) or maybe even horns, and was always quite when driving (maybe from just a rebuilt engine and upgraded wiring system. The subs faced FORWARD, yes FORWARD in a huge box that quite frankly took up the whole trunk but was made out of house speaker (mahogany) wood. The kind of bass that came out of this car was just seriously intense. Funny thing about it, on just about every encounter, he played either Immature "I Will Never Lie Again" or Brandy "I Wanna Be Down" and the car woouuulldd jjuusssttt BEAT!!! Catching every note with precision and accuracy! The trunk wouldn't even rattle! I mean really?!?!

I remember once downtown Atlanta he popped in that Immature cd and you could hear the cd queing the highs were just so dynamic. Well til this day, all we know is that he may have had a 300 amp alternator (which checks out cause the 7600 was unregulated right?) Another sighting was when another frind of mine with a box Chevy (that is straight beatin and is one of the premier rides in ATL. "Big Ben") that remembers this guy gettin off the expressway of I-285 and was shaking the damn awning of the Flea Market that was a good 2500 hundred ft. away; I mean how do you accomplish that with just two svc subs?? Mind you, I don't care who has what in their car here and now, they STILL give props to this guy...almost a full 20 yrs later.

So my question is, How in the heck can a car achieve this? I know it's possible...but just how. I used to read this article from Auto Sound & Security about different kinds of boxes. They had like 4-5 illustraions on facing the box backward (this would happen), facing the box forward (sealing off the trunk would force everything to just go out in the front of the car and produce maximum boom), placing subs in the rear deck for a box, etc. So could this be what that Buick Regal had?? I mean two coated paper svc Kicker subs, an Autotek bts7600 (allegedly), a dense wood box, no extra batteries (that we know of; I mean this was '93-'95; not too many folks in the hood wasn't really into that til now), and maybe even an Epicenter or Zapco signal processor of some kind. I mean how else could he pick up those notes in "Immature" and "Brandy" so well? A 300 amp alternator (also allegedly but believable), in one of the most iconic cars of the 80's and in Atlanta but of course in the good company of many others.

Does and can a 300amp alternator or just really strong alternator/ eletrical system give that kind of performance to an unregulated amplifier and it's system in such a way that this kind of bass can be achieved for anyone?? Can someone please break this down for me?

it was probably an interaction between the box and the actual internal volume of the car. not to mention the mostly steel construction of the cars of those days. plus it probably had a huge trunk by todays standards which allowed them to build a decent sized box for the kickers and kickers tend to like bigger than usual boxes. something along those lines.