On many levels, no doubt.
From my own measurements, I think I'd first go after the midrange peak passively with a notch filter, or better, a comprehensive crossover redesign. That IS the crossover region.
I recall reading an article describing the evolution of the dome tweeter which included some detail about the "fried egg" and why its approach to combining mid and high frequency capabilities was subsequently abandoned. Do you have a link to that?
I suppose there is some merit in pursuing those modern replacement tweeters that'll play down to 1 kHz, but, for my own part, I'm not convinced the woofer is all that competent, either, BSC notwithstanding.
Bottom line: They're not all what thrift store scroungers make them out to be, stacked or not, and yeah, they can be made into something else, better. So what?
Hi Zilch,
I'm quite fussy about speakers, and I find the Advents with BSC to be more than decent. They're quite close to an expensive truly full range reference pair of commercial speakers that I have, even in A/B tests. Not exact, but very close, remember this was a casual experiment that I did, no major effort.
What's your taste in speakers Zilch, any commercial example that you find to be the best for home listening.
Ah, my opinion is that the woofer is remarkable in certain ways, Kloss knew what was important to optimize in a woofer. I have many comments over on the other board.
A notch would help, but I believe that full BSC better corrects the two major issues, and one minor. That screaming peak, a slight boxy quality, and a lack of very high end extension.
I'd say that they are a remarkable thrift store find, but not the ultimate in sound as several of the reviewers claimed back in the day. BSC takes them up several notches, especially with the extra headroom of a stacked pair. I do agree that the lobing is an issue as you reported, and there are ways around that.
I'm not familiar with the article that you're referring to, and I am up on the literature. Funny, fried egg, I sometimes call it a donut tweeter, wasn't fried egg the AR? Don't know but I do know the tweeter that you're referring to. I noticed a long time ago that a well designed cone midrange can act as an acoustical 2-way with the cone+dome handling the lower mid, and the dome mainly alone handling the high end. Kloss did this with smaller cone tweeters, and also somewhat in the early orange LA tweeter. I'd say that intermodulation distortion is the disadvantage, but mainly when the driver is pushed into non-linear operation.
The LA tweeter has equal wind and gap height maximizing efficiency, but making it have zero theoretical Xmax. It will compress and distort when pushed, and I would not doubt if this was seen as helpful to tell consumers to back off on the volume.
I do think that finding a modern replacement tweeter makes a lot of sense.
Have you tried LAs with 100W even 200W/ch?
Pete B.
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