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, big ribbons, and tweeter arraysPosted by Paul S on: 10/23/2006
It is my understanding that the only reason to make a ribbon bigger is to get it to go lower in frequency. I don't know how Arum Cantus configures their G1, and I have not heard it so I cannot say if it is their "best" pure HF driver rather than just another attempt to cover more octaves with the ribbon. I can report that the G2Si loses the "glycerin" at 10k with the ML2s, but, sadly, they may not even meet their lower efficiency specs, either. I can also say that many of these ribbons are not very linear, at all, and it might be hard to calculate sound from specs, so what you actually hear is what you get. I think some ribbons go down to 2R.
Conventional wisdom suggests a line array with multiple tweeters, and I have heard some good ones. However, my old RTR ESR6 electrostatic tweeter arrays were each 6 small panels, 3 over 3, with a horizontal "arc" the equivalent of 3 segments of a decagon; not much of an arc; firing out (of course). The top 3 also fired slightly up and the bottom 3 also fired slightly down. In other words, the things fired out both horizontally and vertically, like the segments in some large segmented horns. This worked very well, indeed, although not strong enough down to 7.5k Hz, so I overlapped them with Peerless tweeters that crapped out as the 'stats came on stronger, around 10k.
I don't know if this translates into anything useful with small ribbons, per se, but it has to say something about HF sound transmission in general.
I have had good luck with zalytron.com, and also e-speakers.com, whch also sells replacement ribbons. I think both places sell Arum Cantus at decent prices.
Best regards,
Paul SRerurn to Romy the Cat's Site