acoustical filter for tweeters ?

[system7]

Tanks a lot System 7 ,

Without it sounds better indeed, at least in my room !

The plus was also to add the notch around 4/5 K, but surely phase suffered of this tweak ! Adding also medical cotton behind the aluminium gave improvement!

You really need the sim to predict phase in some way. I've added the circuit I used, though I can't remember how close it was to yours.

My own opinion is metal tweeters go wrong at the very top end. Some shunt element at the tweeter improves damping and amplifier load IMO. Your circuit has issues at high frequency. That may be the problem. Watch the impedance when modding. It's a big factor.

 

[Eldam]

Thanks,

I never measured the impedance or simulated it either !

I could do this ! Still waiting the Ferrofluid which is certainly go back to Australia ! Damned french postal service ! It works better when they strike !