Need Speaker

I have an '01 Grand Prix SE and I can barely hear the right rear speaker. The sound is so low, I can hardly hear it when I put my ear to it with only that speaker dialed in with the fade and balance.

Does anyone know what would be the cheapest method of replacing the speaker?

Thanks

A used stock one from a junkyard is going to be the cheapest, and if you have the stock gead unit, probably going to sound the best. Stock head units usually don't have enough power to make most aftermarket speakers sound good.

Does your GP have the Bose system?

If you get an aftermarket one, just don't go crazy with the watts.