Thank you,
It is as you described. I noticed only the coil is 0,6mH in both Marantz 5 (without Imperial) woofer with paper cones and rubber. Tweeter the same model as in the Marantz 6, only smaller and smaller magnet.
I measered all component from Marantz 6 Imperial also, in one I replaced the resistors (1%,10W) and Capacitor 7uF. I did not hear any differance with the one not modified. So I replace the original components back again.
When you have heared a Marantz 6, the Marantz 5 is disapointing. But overall I like more the AR3a.
Thank you for all information,
Libertus