[Manolo]

Upon reading the M3 crossover  mod thread, I checked my M4 TM xover and there are 2 resistors in the network. Measured these without disconnecting them, and  the values are 10 ohm and 0.5 ohm. I wonder if these values are the same as in  M3 TM and if I needed to disconnect them  from the circuit for the measurement. Thanks for looking.

[sandston]

In my M3 triode masters the are 2 resistors which are a 30 ohm and a 3 ohm. But the M3 and M4 have a different crossover point I believe. There is a third resistor in the M3TM's that is part of a Zobel Network as well which may not be in the non TM models.

[sandston]

In the M3TM The first resistor is part of a parallel notch filter that appears to create a 10db dip at 2,6kz the second one appears to reduce the tweeter output to bring it into balance with the woofers