Freeair addition
Are the freeair subs really so bad? What if you really badly need very Low frequences and dont care so much about the power?...
Hm... lets check it.

This is what came next. The 15'' freeair sobwoofer with Vas = 500l = exactly the boot of the Vectra. The boot was hardly isolated, the rear speakers removed and the subwoofer attached to a hard mdf plate behind the seats, showing through the arm rest. Oh yeah - it was also neon lightend.
The aim was bass, which cannot be heard but felt everywhere on the car body. I wanted the seat moving bass.

And yes - it happened. Playing the sub with 150 watts instead of 250 (it's nominal) it was still loud enougn for the mid speakers but offering a very nice bass.
As a positive affect of all this I had my whole 500 liters boot empty!:)
I still like this combination and dont mind using it again in any car as far as the boot is really gooooood isolated.
Hm... lets check it.

This is what came next. The 15'' freeair sobwoofer with Vas = 500l = exactly the boot of the Vectra. The boot was hardly isolated, the rear speakers removed and the subwoofer attached to a hard mdf plate behind the seats, showing through the arm rest. Oh yeah - it was also neon lightend.
The aim was bass, which cannot be heard but felt everywhere on the car body. I wanted the seat moving bass.
And yes - it happened. Playing the sub with 150 watts instead of 250 (it's nominal) it was still loud enougn for the mid speakers but offering a very nice bass.
As a positive affect of all this I had my whole 500 liters boot empty!:)
I still like this combination and dont mind using it again in any car as far as the boot is really gooooood isolated.