What the feck. I did not realize you could vagcom the HU for preamp signals. How much is this vagcom controller?
I am visiting this subforum because im looking to do another sub. I was thinking a 15” infinite baffle using the cargo cover (replaced with wood). Not perfectly sealed so maybe something also open baffle suitable.
I would try the cheap under seat sub first OP. If you dont like it then its not so bad cause inexpensive. My suspicion is that it will be great because its cheap and also physically located in front so you have less installation and less time alignment issue (saving more $ to fix to make sound good). The under seat sub certainly wont play deep but like you said, filtering the bass to a sub will help with distortion on your door speakers (mids) which is more important.
I am visiting this subforum because im looking to do another sub. I was thinking a 15” infinite baffle using the cargo cover (replaced with wood). Not perfectly sealed so maybe something also open baffle suitable.
I would try the cheap under seat sub first OP. If you dont like it then its not so bad cause inexpensive. My suspicion is that it will be great because its cheap and also physically located in front so you have less installation and less time alignment issue (saving more $ to fix to make sound good). The under seat sub certainly wont play deep but like you said, filtering the bass to a sub will help with distortion on your door speakers (mids) which is more important.