OK heres My problem I just got a good deal on My first real Bass amp, It is a Fender 160 watt M-80 Bass . The reason I got such a deal is the speaker is blown. The person i bought it from is reputable and told me that he blew it demonstrating a guitar to somebody in the shop. It's a pretty much "as is" deal but the price was right so I bought it. Now my question is. What type of speaker can I replace it with(it's an EV 15" by the way)and are Bass Amp speakers different from say ,Rockford Fosgate Bass Speakers. Any help would Be appreciated Thanks I got this response on another Forum (and since I don't have a clue as to what he is talking about) I took his advice and am Posting here. This is the speaker I am looking at http://www.ezcompare.com/ezcompare/ezcompare/model_info.asp?visitid=370956&model=10002277 "it all comes down to theile-small parameters. get them from fender for the load that was in the combo. then get them for the fosgate. if it isn't too much less efficient it might be worth using -- probably anything more than 1.5 dB with that power would be a loss. then, you need to figure the volume of the cab so that you can if really needed retune it to the fosgate the way you want it to sound, based on maybe a WinISD or PerfectBox plot. if this sounds too complicated, that is because really it is, for most people, unless they are actually *looking* for something different, are convinced it will be an improvement based on their preferences and their actual knowledge. there are a few peeps who have built successful bass rigs using automotive audio components, and i beleive you could hit the right sub-forum on talkbass.com and smoke them out rather easily ; } after some driver research and box plots i actually considered building a sub around some alumabass drivers at one point; but got sidetracked on another project instead. curiosity often kills the cat...slowly /; }"