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#426478 - 08/27/17 11:33 AM Re: Alternative drivers [Re: bridgman]
Jeff_in_the_D Offline
veteran

Registered: 04/11/12
Posts: 167
Loc: Detroit
With my somewhat limited experience with speakers utilizing a ribbon tweeter I have not found this to be an issue, this "head in a vise" scenario. Perhaps because the full range, three way towers I have listened to are approximately 44" inches tall? IDK, they are quite wonderful sounding. I do realize everyone's experience can/will be different .
Jeff

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#426484 - 08/27/17 06:59 PM Re: Alternative drivers [Re: Jeff_in_the_D]
AAAA Offline
connoisseur

Registered: 03/28/14
Posts: 1593


Hi Strider. When photobucket stopped 3rd party hosting my build thread was pretty much gutted. The last dozen pages or so in the thread Bridgman linked pertain to the speakers. Here is a pic of how they turned out. I built three as an LCR set for behind our screen wall. Pretty nice for movies.

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#426486 - 08/27/17 08:04 PM Re: Alternative drivers [Re: AAAA]
Jeff_in_the_D Offline
veteran

Registered: 04/11/12
Posts: 167
Loc: Detroit
Serenity Now, wow they look great! Hope they sound as fine as they look. What ribbon tweeter did you use?
Jeff

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#426487 - 08/28/17 12:43 AM Re: Alternative drivers [Re: Jeff_in_the_D]
brwsaw Offline
connoisseur

Registered: 10/12/12
Posts: 1954
Loc: Canada
They look great
_________________________
Currently 2 vintage axioms rear rears 2 QS8's for side surrounds and a ADA-1000-4 powering 3 M80HP's

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#426488 - 08/28/17 02:12 AM Re: Alternative drivers [Re: Jeff_in_the_D]
bridgman Offline
axiomite

Registered: 08/25/04
Posts: 6225
Loc: Bowmanville, Ontario, Canada
Originally Posted By Strider53
Serenity Now, wow they look great! Hope they sound as fine as they look. What ribbon tweeter did you use?

It's disturbing that I knew the answer from memory (I really enjoyed the build thread), but IIRC according to the plans it is this one .

It occurred to me that the degree of "head in a vice" behaviour would probably be a function of the mid-tweet crossover frequency, but it's too late at night for me to remember whether higher or lower is better.


Edited by bridgman (08/28/17 02:15 AM)
_________________________
M60ti, VP180, QS8, M2ti, EP500, PC+ 20-39
M5HP, M40
LFR1100 actives picked up Friday 13th

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#426489 - 08/28/17 03:49 AM Re: Alternative drivers [Re: Jeff_in_the_D]
AAAA Offline
connoisseur

Registered: 03/28/14
Posts: 1593
Yeah that's the one.

In this design it was crossed at 3500hz I think to the Mids. I think the designer uses a rule of thumb of filtering a whole octave outside of the drivers "safe" range. I think the tweeters could be crossed at 2500hz according to the manufacturer.

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