I initially wanted 2 12" HX2's ported, but after looking at the shallow hatch and the air space, I think 2 10's would actually breathe better. Anyone have any subs in theirs yet? Does the Pioneer XM, MP3 ready radio have RCA's, or is it the same in the base model? I'd rather not buy the adapter or run from the high output due to road noise. Any suggestions folks?

What I have:
350w Boss 4ch--____ty, but only mids/highs
1000w Hifonics Zeus 1ohm stable 2 ch
No subs yet

 

I've got a Kenwood 800 watt 2 channel amp with 2 Kenwood Typhoon 10's in a sealed box. When all is said and done there's not that much room left in the hatch area. A ported box or a bandpass would almost gaurantee you'd be using the backseat for storage space. The stock deck has no RCA preouts, you need to use a line converter.

 

Check out my how-to on the factory sub: https://www.scionlife.com/forums/viewtopic.php?t=22943

It's cheap enough that even if you wanted to replace the driver and amp, it would still make sense to get it. I think it's the most compact solution for the tC.