Hi Troels,
Thanks for all the help and I finally made it, played for 10 hours now the woofers start to blend in.
Don't feel any less dynamic and detail compared to the azurahorn with lowther pm2a, TL3 is so smooth with much better lower end textures.
I can drive it loud with 2a3 single end, while still need to find/build a more powerful amplifier to give the speed and impact.
Cheers and enjoy the summer!
Regards
Wei