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As an experiment, I added Raal tweeters to my GR Research BG Neo-8 tweeter array to lift a (subjectively) drooping response. They do indeed add more life (air?) to the presentation, but it may be too much of a good thing. At times the system sounds, well, maybe a little too bright.
I recall that Magnepan used to supply one-Ohm resistors to tame the response of their wonderful ribbons. Maybe I should try the same thing in front of the Raals. Any recommendations as to what resistors I should try? Naked Vishay? Mills? And where's the best place to get them?
I used Mills on some Maggie's ribbon tweeters with very good results. They were 2.5 ribbons that were used as super tweeter that came in at around 10k or maybe it was 8.
I used the Maggie 3 series ribbon without any resistors, just a cap for a super tweeter coming in at 10 k
I had a line source with NEO 8's. They are not a good tweeter. I switched to true ribbons. Below you will find a calculator for crossovers and at the bottom a attenuation calculator.
Thanks, Mike. You're right: the Neo 8 is not a great tweeter. The Raals make a wonderful difference, and the combination is excellent -- except for (maybe) a teensy bit of brightness that (I believe) can be tamed by the addition of the right resistors. I appreciate your response.
Mundorf M-Resist MOX metal oxide film resistor should suffice. You might consider trying 1 Ohm and 2 Ohm values, since I recall a 2 Ohm resistor being used for the purpose by DIY loudspeaker builders years ago.
Thanks, Duster. I might not need any resistors at all. THe system measures just fine. I am exploring whether my 1uF high-pass cap (a Solen) is making my system sound a little on the bright side. We'll see.
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