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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="jessie.dazzle"]However, I must say, I have a lot of trouble accepting the idea of redundant drivers. [/quote]
Yes, it dose not sound attractive to me but it is not the redundant drivers but one main driver and another at minus 9dB drive...
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Hi Romy. Interesting point as i had similar perception along my recent I ran an 8inch driver with fronthorn. Then just got my hands on a pair of RFT L-3701 (or 3702). http://tempuri.org/tempuri.htmlA fabulous driver with exactly those parameters. T...
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[quote user="jessie.dazzle"] After observing a pair of AK151s operating in free air, though only lightly driven, I just don't see how they can possibly generate so much pressure, as the cone barely moves! [/quote]
Why shout they move? One of the ide...
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... that such modest-looking, off the shelf setup moved Mac/Milq out of the listening room is impressive enough. If that were my boxes, before commissioning new pair, I'd try shaving off the front baffles. Any wood workshop should do that, no ne...
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Ok, now I see that this is a whole concept and shaving off the front baffles is not an option. I hope your builder can redo the cabinets quickly. Instead of 1" 45deg bevel you might consider 1" radius to minimize/disperse HF reflections and diffr...
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Dear All,Thank you all for your assistance, especially Romy, whose information has been particularly interesting. I have been in contact with Jeffrey Jackson, with whom I have discussed my driver preferences, and arrived at what is essentially only a...
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Excellent news regarding this morning's discoveries. jd wrote:"...Are you able to say whether the problem is due to the horn position relative to the room, or to throat diameter relative to the driver diameter?..."Yes, a stupidly phrased question, bu...
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[quote user="jessie.dazzle"]Is this because of the way you are driving them?When testing my one completed mid-bass horn (AK151 into 40Hz Exponential with 8" throat), and powering it from an amp that drives everything from upper bass to HF, the output...
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[quote user="jessie.dazzle"]I realize this is off topic, but I would like to address the issue:Rackish wrote: "...Recently I asked someone who contributes regularly on your forum and has a system 'similar' to yours to come and listen to his system....
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[quote user="jessie.dazzle"] There may be better drivers out there, but with my level of experience, I doubt my abilities to recognize them. So though it may resemble laziness on my part (remember, this is the same person that will be constructing a ...
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Thanks Romy, Paul, and Ronnie for the comments and encouragement :
Here are some responses :
1) Rubber gaskets :
Maybe it is not so important to have an “air-tight” seal (???). The rubber gaskets are there to seal the cover to the rear chamber...
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Romy wrote :"...Jeffrey Jackson suggested that to build the horn similar that he has built for the GOTO distributer he would charge around $15K. As I understand you are a software engineer, so with $100/per billable hour of your salary the $15K is ju...
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The sound wavelength must be much longer than the 6". How low the 15" goes? BTW, has anyone compared old AK151 vs the new production? The old ones seem impossible to find (new production being in turn horribly expensive).
...
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hi. That’s a nice topic. I studied the VO like a maniac. For me there are 3 topics. First was obvious, easy, the horns. The bass horn for the ak151 is housing a rear chamber slightly open, giving the injector channel - that creates a lot charme, flav...
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yap. the Olympian uses 70-500-5000-15000 cycles XO.
While the Palladian shifts to 70-400-5000-15000 cycles. (mainly due to cost saving on the AK151 phaseplug-design)
They use 6th order LR filters in the lows, 2nd order in the ...
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[quote user="jessie.dazzle"]Upper Bass : Frequency range between 100 and 500Hz – Driver loaded into a 120Hz straight horn, driven by DSET dedicated channel. Mid Bass : Frequency range between 40 and 100Hz – Driver loaded into a 45Hz straight hor...
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[quote user="rdrysdale"] We are using about an 18 foot path for the sub. What we need is for some smart electronics guy to design and build a processor just strictly for time correction, and nothing else, no EQ, or crossover built in. [/quote]
Hey, ...
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Romy,It is indeed an interesting subject; I am instinctively drawn to it due to the fact that the majority of orchestral instruments - the majority of my listening is orchestral/chamber/classical soloists - produce their own sound through the resonan...
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Recently, I was fortunate enough to have an extended listening session with the Living Voice Vox Olympian outside of a show environment. Since said listening session took place upon a boat – moreover, a wooden-bodied boat – under what can only be sai...
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Klaus,Yes, I assumed that you had found the spec sheet; I only included the link for the convenience of others following the thread.Klaus wrote : "...whats wrong with 9,9"? its rougly 55% of sd? you think, 43" is too short for a 62hz h...
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Romy,
Here's the link to the McCauley 6174 specs...
http://www.mccauleysound.com/product_specifications.cfm?ID=126
In considering your comments on the necessity of a 115 Hz Upper Bass horn : You make a good point...
Your quote : "...If you ...
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The exceptional 15-inchers would be two fitted in two categories: the bass 15-inchers and wide-range 15-inchers. It is imposable to think about the exceptional and wide -range 15-inchers and do not mention the 1946 -1973 production of the Tannoy Dual...
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Once you establish that you are for sure on the right track with the whole idea of the Injection Channel, it would not be such a big deal to cut and extend the vertical mast of your Macodo frames, moving your Fundamentals Channel up... You could have...
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[quote user="de charlus"]Romy, do you have first hand listening experience of these YL drivers? If so, in what sort of installation? [/quote]
Nope, I did hear neither YL drivers nor ALE driver, as least consciousnessly.
[quote user="de cha...
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Hello guy,
Regarding your question : "...What ratio of diaphragm area to throat area did you arrive at (for the large horn) & how did you choose it?..."
The ratio I used for the 45Hz horn is about 65% of the ø of the diaphragm LESS THE SUSPENS...
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It is very uncommon, practically never happens but still very rarely it is possible to talk about sound or playback systems from a prospective of “absolute tone”. Yes, the audio people love to take about tone of their audio but in 99.999% those audio...
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Thanks for your comments Romy.
You should like this bit of news... I forgot to mention, these will be round-section horns...
And yes, they will be very heavy... Made from a metal armature and very thick, natural (hemp) fiber-reinforced, plaster...
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[quote user="Romy the Cat"]
...this interesting point has no practical answer. First of all in the case of Rakesh horn what N-Set proposed is not necessary. Those 115Hz Hasqiun-style horns that Rakesh emulates are well dumped with own mass and own ...
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We understand that Charlus’ selection of drivers are not a selection yet but some kind of very preliminary idea of the drivers that he feels like he like. I said “he feels like he like” not accidently. I do not think Charlus, or anybody else in h...
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Romy,
Sorry for taking so long to get back to you… (this being the summer time in a Latin country, I still have no internet connection at the new place).
Quote from Romy “If your lower bass channels run from 40Hz and down then the PS, size of the c...
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