yeah, 6 10's just means you have to cut out alot more holes, wire alot more speakers, etc. Just a pain. 2 15's is going to have very similar performance with alot less work involved.
I was hoping I'd get better performance over this 21 that I have. Yeah hopefully I can do the 15's
Team Sundown Hawai'i2008 Dodge Magnum on 22" Irocs
DC Level 6m3 18
Sundown Neo Pro 8's and 6.5's
Rainbow Cal 25's and 20's
Rockford 6x9's in the grill with toggle switch lol
You probably won't see a huge gain without upping either cone area or power. All things equal there isn't much difference between the 21 and 2 15s. I just made the switch to a 21 and in my case the 21 is the more impressive setup but things weren't equal.. if I had to guess in the same car similar box it'd be close. How much airspace do you have
6 10's has twice the cone area, I would go with the 6 10's if your looking for more output.