Originally Posted by
Mrmiata
"Base" models were the only ones without the subs.. Coupe's that are Limited or SRT6 have subs.. haven't looked for what you have.. but ALL 04 models are "Limited" models since base versions came out in 05 I believe it was. Move your seat forward and look behind them for the subs in the divider wall.
You have an '07 Roadster, so like MrM said, the subs are behind each seat in the bulkhead.
Crank the radio all the way up and put your hand on them.