Subs in the trunk?

[Accord Man]

Yes, in the trunk.. Depending on on how well the intererior of your car is sound/weather-proofed, the bass can be heard from inside..

ex:
1- 92 sentra coupe (1 10" 300w rms)
2- 2002 Accord coupe (2 12" 600w rms)
Both system have very good installs. With the seats, the sentra's interior is getting more bass (even though it only has 1/2 the power).. But with the seates down/off, the Accord obviously buries the sentra..

In your case, the sound/weather-proofing wont do that much dammage.. So even with your seats up, you'll be getting a lot of whats being played.