would there be any problems with running a JL 10W3 2 ohm with a JL 10W3 4 ohm off the same amp?

 

Yes. If you run them in parallel you get a 1.3 ohm load. Most amps can't handle an impedance that low. If you run them in series (or parallel) the 2 ohm sub will be getting twice as much power as the 4 ohm sub. This can be a problem if the subs share a common enclosure. I think it was Dave Navone that did an article several years ago about how it's not a good idea to mix and match sub-woofers like this. Even if each sub has it's own enclosure there is no guarantee that their outputs will combine together properly for good sound.

 

yup...ls1rulz is right once again!

 

ok guys thanks