Martin-Logan Odydssey and Yamaha YPAO Incompatiblity - Can you help?

[hermanv]

I don't know if what I describe below is going on but it MIGHT be.

Martin Logans are a line source not a point source. For a microphone at a given distance, certain midband frequencies will reach from the top or bottom of the ESL membrane at different times than will the sound from middle of the membrane.

The result of this with a swept frequency response is a comb filter, that is to say the microphone will believe that there are a series of peaks and valleys fairly close together in the frequency response.If you receiver is trying to dynamically equalize the ESL panels it will go nuts.

I have had this experience when trying to measure using MLSSA and it took me a little while to realize I could not do near field.

If you set equalization for flat, does the protection circuit kick out when playing music? (The Martin Logans will not need mid band equalizing, the rest of the posts are correct this is a first class speaker (except maybe we could debate the bass response).

[Florian]

Try using a Tact digital room corrector. Works great on my Maggie 3.6's. I am sure it works great on the ML's. you need to set your own target curve and follow the ML one a little bit. dont raise frequecys above 4db since it may overload the surface.

-Flo

[JoeE SP9]

Topspeed said it all. Driving those ML's with a receiver should be a punishable crime.