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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I notice the same warming up effect on my system, takes a few hours. And I thought... could it be the speakers warming up? ...
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when talking ulf are we talking array of aura 18(the old ones not new junk), or something else...
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Electronluv,
As I understand you were a few years out of audio business and it looks like you are back, nice to see.
I saw at your site just MF compression drivers not the bass drivers. Anyhow, I have a few questions to ask. You use berylli...
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I do not look for beryllium diaphragms, I just was wondering if someone has succeeded to manufacture them in “basement conditions”. As I understand it shall be VERY difficult.
Well, your driver might be interesting. If I was able to accommodat...
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No, I'm afraid not. I think the upperbass is perhaps some new production (Mike Harvey) 15" Vitavox Alnico item and I think there is a TAD unit behind the brass trumpet but I don't know which one. You'd need to ask. I think there are various options...
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[quote user="ayebee"]
Present system consists of:140Hz (3" throat) horn with Fane Sovereign 6" driver (120-700Hz)250Hz horn with JBL 2440 driver (700Hz-2kHz)600Hz horn with JBL 2420 driver (2-12kHz)Bass is one Scan-Speak 8555 8-incher per channel ...
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If you know how in some optical systems imagery get destroyed when an aperture getting closed to F64 or even smaller, then you understand what happens in compression driver when frequency get higher and spaces smaller. Yes, the proximity of wavelengt...
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Hi all
I have experimented a bit with rear tubes on compression drivers.
Chucked the back covers in a lathe and made a suitable hole
for the rear tube, matching the area behind the diaphragm.
Got "better" results to my ears with wool filled tub...
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[quote user="cv"]This is but one reason why I'm asking Martin Seddon to make me a pair of 160Hz horns...[/quote]Another problem….
Chris, be carefully with those large 160Hz horn and S2. The guys who make then have no instruments to center the mounti...
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Hi all.....
[quote user="Romy the Cat"]
I just wish somewhere would show up a manufacturer that would be able to produces compression drivers (or any drivers!!!) with sonic objectives…
The caT[/quote]
Unfortunately that will never happen...
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LOW FREQUENCY DIRECT RADIATOR DRIVERS
411A –18Hz, 93dB, sealed box414A - 99dB, 30Hz, Alnico, cloth416B – Alnico, 97dB, 25Hz, cloth416C – 16” version of above with Ferrite416Z - 12" version417C – 100dB, 69Hz, Alnico, 1.3T, 12”418B – 100dB, 55Hz, Alni...
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[quote user="homebuilder"]...active EQ will be a part of this project, along with in room measurement. My friend will do the honors on that. I have not purchased an EQ yet. [/quote]
You might eventually revise your view about the active EQ and pres...
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This is probably the reason I can listen to EV Patrician IV in relatively small space and close to the speaker without much of fatigue. The other factor must be that it's 4- way design with narrow band-pass for each horn. EV T25 2" phenolic com...
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I was right before but now I really review my rightness for a new perspective. Yes, the compressions drivers are the subject of clean signal but it what I witness with the new 6-chenals DSET put what I said above in another extreme dimension. I do no...
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[quote user="jessie.dazzle"] Back when Fane were still in business, I ordered a pair in 16O (I don't know if there is a theoretical best choice between the two for horn loading... Any thoughts ? However, the 8O model will require a smaller coil in th...
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[quote user="be"] "another big selling point to me was the 505 being a low resonance compression driver.. there just aren't many drivers with a resonance in the 80 to 100 Hz range like this driver... I have just begun my playing, but am already quite...
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Romy,I'm new here, and I have read your posts in the forum. I
have some questions that relate to this post of yours: 'The midbass horn is
a pain in ass, a big pain!!! The GOTO-Jackson horn went for the very noble
small throat size – somethin...
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[quote user="Romy the Cat"] ygoh wrote: 1.) Why is it that you do not support using teo compression drivers in the same throat? Is the distortions increases, such as wavefront distortion? Sure the wavefront gets spread; it is what Wi...
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[quote user="Merlin"]Where Romy is wrong is the cost of TAD drive units.[/quote]Well, perhaps my outdated memory plays a bad joke on me. What I remember from beginning of 2000s that TAD 2001 cost around $1200 retail with “street price” of $900. The w...
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[quote user="Merlin"] If they are modifying conventional drive units by hand, the labour costs alone can be prohibitively expensive. The fact that they are using heavy Alnico magnets and coating the diaphrams suggests that these units do not co...
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[quote user="jessie.dazzle"] Is the S3 as sensitive as the S2? [/quote]
Yes, they are appearing to be the same sensitively.
[quote user="jessie.dazzle"]I keep telling myself that I am almost done making horns, but I keep having ideas to try...
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[quote user="Romy the Cat"]If you are still in MF frustrations then I have something that you might find interesting. Recently I pick up in UK a pair of Vitavox S3 drivers. I figure that if you wish I might let you to play with before they die in my...
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Yesterday I spoke with a guy at a Russian audio forum who reported that he played with addressing many problems of compression driver by pumping ferrofluid in the gap. I am not a big fun of ferrofluiding generally and in case of compression drivers i...
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[quote user="xandcg"]Now I got why
exactly midbass horns are reported to be so complicated to be properly made. [/quote]
Well, I do not think you did as I promise your
that the complexity is much more then you know, or at least then wh...
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Xandcg, these bass compression drivers is a controversial
subject. T think there are 3 of them ALE 160 and P1260
and GOTO SG-146LD. I think they all 4”, it would be very nice if they were 6”.
However, 6” exit might be a bit too wide for compre...
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I spoke to the owner of the company. The drivers are copies of Western Electric 555 (but the owner insists that they use genuine NOS WE diaphragms membranes) but they can be custom made to fit in with one's requirements. I didn't know such a thing wa...
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Scott, I'm guessing the installation shown in the photo makes lots of LF, but how does it provide balanced, "free air" loads on both sides of the drivers?Best regards,Paul S...
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Since no driver is actually full range, driver selection is partly conditioned by how well it plays with the other drivers it will be used with, and - very certainly - the crossovers it will be used with, also baffle shape(s) and size(s), amps(s), an...
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Of course, any speaker is a compromise rather than a "solution" for the complex problems of "phase", which can hardly be "solved" by fixing driver diaphragms in the same verticle plane, at least relative to the listener. Not to say that this is not w...
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Anthony, I agree with your central observation, and I have used paralleled HF drivers for decades, starting with the old Peerless paper tweeters paired with RTR6 electrostatic arrays, and now paper whizzers with Audaphon ribbons. As you know, this ca...
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