Swapped out the front 4″ 100mm speakers in the dash, aswell as built a closed box with two 8″ speakers for the rear-shelf.
front speakers bought from FatmanCustoms
https://fatmancustoms.se/produkt/helix-s-42c/
https://www.audiotec-fischer.de/en/helix/speakers/s-42c
The HPF/LPF is set at 120hz, and the front Helix S-42C manages the midrange/midbase exceptionally well.
The 8″ speakers in the rear-shelf with a custom-built 20liter enclosure is the GZUW-8SQX from Ground-Zero
https://fatmancustoms.se/produkt/ground-zero-gzuw-8sqx/
