Rerurn to Romy the Cat's Site
In the Forum: Horn-Loaded Speakers
In the Thread: Tweeter for Vitavox S2. High-sensitively ribbons?
Post Subject: Arum Cantus?Posted by Paul S on: 10/21/2006
Romy, it sounds like, as usual, you have covered a lot of ground already before you put out your first questions about ribbons.
FWIW, I presently use Arum Cantus G2Si ribbons, phasing them in at 10k Hz to supplement the Lowther DX4's dreaded whizzer cone. The G2Si model is not for you, but Arum Cantus also makes at least two larger ribbons, and I believe their G1 is about 102dB at ~8 Ohms, and cheap enough to play with, including cheap, easily available replacement ribbons.
My own ~96/97 dB ribbon was indeed too soft with my Wright SET amps, but those ribbons hardened up nicely with the ML2s, even with the bad output tubes!
I know some people use small ribbons down to their lower frequency limits, but IMO they lack drive for lower than super tweeter. In any case, I have only tried mine along with the Lowther because I believe it would not be strong enough by itself.
Likely, you have already thought of running both a silk dome and a ribbon together? I like both types of tweeters for different reasons but I've never tried both together.
I mention this because I used to run Peerless tweeters from about 3.5k Hz with RTR ESR6 'stats phased in at 7.5k Hz, and that was as good a high end as I ever had, or so I remember, but, sadly, only about 88 dB efficient.
You spoke of looking for bigger magnet drivers. Tommy Horning cobbles together some nice "big magnet" tweeters, although I have been told they trail off over 10k Hz, at least in terms of "the necessary hardness".
Best regards,
Paul SRerurn to Romy the Cat's Site