How to install midrange & midbass speakers into an R36 Passat door.

[Fhrx]

Seems like a large speaker without much air space.

One of the most peculiar aspects of the Utopia 33WX2 is that in order to get a Qtc of 0.707, they require an absolutely minute enclosure. We aimed for a Qtc of 0.707 in the Passat wagon because the subwoofer is firing in the same chamber as you (however in cars like mine the subwoofer has to fire though a seat so we tend to raise it a little to a Qtc of 0.74). Have a look at the following graph showing the Passat's subwoofer linearity and group delay.



As you can see; it has a stunning response and a constant group delay (making the bringing of the bass to the front easier), all in a very small enclosure. The enclosure is so small in fact that the subwoofer motor almost didn't fit in. Luckily r207 required a slightly larger enclosure than mine. My 33WX2 has to sit bum out like this: