Just got an original soundstream ref 700sx in the mail today. Kinda excited about it!!!!
Couple questions for u guru's.
First i opened her up to look thru the guts to see if anything outta the normal happened to it and i found two things.
Theres 3 switches, one for connection mode ie bridges, stereo, and mixed mono.
Crossover mode.
And then theres this little guy.

It says "airbass" and has either out or in for the switch direction. Whats the purpose of this switch?
Then i noticed this lil dude all toasted, im sure its a resistor but for one of the channel daughter boards. Does this indicate anything seriously wrong?


Any help and info guys would be greatly appreciated!