Thiel Owners

agree with jon.

Test tomes resulted in weird noises, both earlier 3.5s and now the 2.7s. 

Thank you jon-5912 and brayeagle 

I feel relieved and I to have only heard it with the test CD .

I'll be running it again next week when I replace 
the recitifiers on the amp that are faster and have a softer recovery  .



 

1:04 on the Ayre IBE long glide tone is ~28 Hz. Charles Hansen posted the formula on audioasylum.

What caps did you replace? In the 2.7s?

Wow Thanks beetlemania

None yet , that project will begin right after New Year .
Still working on the amp , 32 caps and 3 resistors 
with 2 resistors and 4 recitifiers going in next week end 
leaving just 10 more caps and 8 resistors to go .
I doing this in small groups to see how they affect the sound 
and control any problems .
I've been using Hovland and Nichicon caps 
but for the speakers I think I'll use Jupitor CU caps .

I’m still confused as to what you did when you experienced the resonance.

Ayre recommends playing the IBE at “moderate” levels which I interpret as less than typical SPL for music.

When I did my XO rebuild, I searched for cabinet modes with steady tones (ie, not IBE). At higher SPLs, there were many frequencies that caused distressing distortions. I never determined the cause - amp or speaker - but immediately stopped that exploration!

Thank G*d, actual music sounds sublime!