there are a bunch of haters on here. ignore them if you can. the fact you arn't flaming back is a great start.
fwiw my 1st 3 installs in my 1st 3 cars all had amps with a turn on turn off switch. now they did connect to the blue headunit remote turn on but that's irrelevant. there is nothing wrong with a switch to turn on or off any of the amps in your car.
as for school i only say small business management if you wanted to own a shop. which should be your desire if you want to get into this field. working for someone for the rest of your life = fail. also you have something to fall back on.
other than sbm an EE degree would help most. an EE will let you go more places without a doubt and gives a GREAT background for understanding it all but unless you like math stay away. ME is boring ****. stay far away.
basically in this field(ca/ht) you can(to make money): design amps, design speakers, installs, marketing/sales, own a company which does some all/some of that. that's it. very small field and it's not getting bigger,
especially not in the USA. If it's what you want to do great, go at it.
honestly if you understood EVERYTHING on this website:
http://www.bcae1.com/ and
http://www.caraudiobook.com/
i would hire you to do installs. but not a second before. you should have all of that memorized anyways if you want to go anywhere in the world of car audio/HT. Also learn how to design
correctly enclosures for both home and ca. understand every **** spec of a speaker etc. be familiar with modeling it on a comp etc. help people out on this forum designing their enclosures and giving advice. READ alot. and know that HT is VERY different from CA and is MUCH more advanced in many aspects, as well as being more profitable and interesting to say the least. I know a guy who works for a HT install place and makes easily 65k a year w/ no education just as an installer.
and get a job at a ca/ht shop asap. you'll learn alot there mainly the hands on stuff as alot of shops **** at designing a 'good' system. that or they don't take the time who knows. also get some audio books there is a TON written on the subject. there is at least 10-15 good books you should read.
and anyone who gives you **** about not having a car can go **** themselfs. i do suggest buying a junker asap. find a $500 beater. learning how to fix cars is very useful, and you can try out different build inside your own ride.
oh and remember speaker technology hasn't 'really' changed really since the 70s, no matter what anyone says.