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In the Forum: Horn-Loaded Speakers
In the Thread: Tweeter for Vitavox S2. High-sensitively ribbons?
Post Subject: PT-R9 tweeter sensitivity, Aurum Cantus and other ribbonsPosted by cv on: 10/23/2006
Hi
Something sounds very wrong - maybe something fishy about your samples?
Take a look at Nelson Pass measurements towards the end of the following document:

http://www.passdiy.com/pdf/KleinHorn2.pdf

where it looks like the PTR9s have similar sensitivity as the Lowther DX4s.


Also:
"My reservations that time were the very same as now: with 97.5 dB/W sensitively I would need 3 of them per channel and with a price of $1000 per pair it is … kind of heavy."

I think at the frequencies involved you would NOT get the summing of sensitivity you are after as the radiation patterns would not overlap too much.

Aurum Cantus use wedge shaped Neodymium magnets. I should send you a picture of my custom baffles which hold 8 G1s a side in closer proximity than their usual frontplates will allow.

Ok, one little addendum; you might like to check out the large RAAL ribbons, eg at Solen.ca
http://www.solen.ca/raa.htm

cheers
cv

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