hi all, since i recently got a measurement microphone, i am now able to measure the response of the unit.

this means i can resume this project and i litterally did that 1 hour ago.

turns out there was a lack of high tones of my tb w3-315 (might be because i got them from a construction radio which was dead..), so i decided to add a dayton n20fa-6 tweeter. and the bass is still not loud ( cuts off at about 60hz)

just compare the results for yourself

'original unit'

'new unit'

this added about €12 to the costs.