i have 91RS. it has stock sound system. the prob is i get low volume in driver side front speaker and low vol in passenger side speaker. what could be the reason for this.
where is the stock amp located in the car
If i plug in 450 watts speakers to stock wiring and headunit will they work or some thing might blow up

 

Either your speakers are blown or your fade/balance (cant remember which one it is) is messed up on your Head unit.

Installing a 450 watt speaker/subs isn't as easy as just plugging it in takes a little more effort then you think. (amp, bigger gauge wiring [big 3], fuses, bigger alt if you go for a big amp, better battery)
Oh and there is no Stock amp the speakers are powered off your head unit/radio whichever one you got.

 

thx for replying, i checked the speakers by testing them in other car their working fine, and tested by putting other speakers in my car same prob. i think there is some prob in headunit, my friend told me that some IC is gone do u know which IC is responsible for this.

 

no offense, but maybe you should take it to someone else if you aren't sure about a "stock" amp, and how well higher wattage speakers should go in. if you're really set on doing it yourself, then what's your budget? putting high wattage speakers isn't suggested, but you could get by with an aftermarket headunit. It wouldn't sound good though (it'd be like 10watts rms on a 2-100watts rms speaker. Bad to say the least).
also, check your balance settings like hellsatan suggested. seems like a lot of work swapping speakers when it could just be a setting.

 

you dont always need a bigger alternator...if he runs a 2 channel class a/b amp he would not need a alternator...i run 1500 watt 2 channel for 6 years and no problems with my alternator and i have the stock battery that is also 6 years old

 

yeah I run a 500 rms mono and a 100 rms 2 channel with bass way up headlights dont dim, it's all good with stock for now.