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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Thanks, the writing at:
http://theartofsound.net/forum/showthread.php?27531-Cessaro-goes-Field-Coil
...is fascinating . If the GIP Labs 594A a replica of the WE
594A then it might be a very interesting driver as 594 was not typical WE’s Vaselin...
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[quote user="cv"] I couldn't unscrew the top threaded piece myself. Perhaps I was turning it the wrong way?! Any guidance you could give on dismantling the driver would be appreciated.[/quote]Chris,
To take the outer ring is very simple. Uncre...
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Hello again Romy and cats... sorry so slow in replying to this thread... the recent posts generated an automatic email reminder... :^)so a few things... one, there is a pair of Goto 370 on eBay and pictures of insides... the newer ones are made the s...
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The only reason I don't have a giant WE system is that I can't afford it and I don't have room. I sold all of my WE and Lansing field coil gear to my Silbatone friend back in 1989, because I know he would never sell it, he was putting together a ser...
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Gera, if you would
like to incorporate the Western Electric 13a with 555 then you need to make a decision
how low you will drive it. You chose the 120Hz but it might
not be useable frequency, it might be much higher in order to get “better”
sound...
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We had this exchange with Christopher Witmer, who lives in Japan, via the AA about the new driver form some small Japanese manufacturer. The dirt who runs that form has deleted the whole development. Hm, people wonder why for years I have a vocal and...
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To understand why permendur, as reported elsewhere and to my own little experience, sounds different to soft iron as conductor of magnetism in loudspeaker motors one must look at permendurs properties.
Two differences might contrib...
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Romy,These are the G.I.P. 9700A System. Here are the specs, I asked to GIP some time ago:Regarding Dimension without horn and Tweeter (only
enclosure)W: 1240mm × D: 1200mm
× H: 1120mm
weight: roughly 350 kg / 1 pieceDimension with full setW: 1...
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Zdravstvui Roman, hi Chris,
I know almost nothing about the relation between sonical effect and
physics, so I will only try to speak about the latter. Take it as you
wish, I can as well delete the post if it just increases the
entropy.
...
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[quote user="TonyB"] So do your horns have 115Hz flare frequency? (and have the rear chamber tuned for 115Hz as well) [/quote]
They are 35”. Do your math. The back chamber tuned at 115Hz.
[quote user="TonyB"] From the pictures the horns look like t...
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Hi Romy, I've been following your progress, it seems that you are drawing some very similar conclusions to what Steve Schell and I have learned. The bass horn has to be the proper size in order to work well, we are having ext...
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Ah yes, sorry - that wasn't remotely clear. The drivers I have played with briefly are S2 and field coil RCAs, both have the same 1.5" throat. I was referring to my initial impressions of the sound on Martin Seddon's 160Hz horn (T=0.8 JMLC). Previous...
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Not to be too presumptuous but i thought i'd start a thread that could serve as a repository for lowther comments, ideas etc.the impetus for this was that rola experiment i mentioned in the cogent rmaf thread. I was thinking hmm, 'hard', 'shouty' tha...
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[quote user="RonyWeissman"]…Have you tried…. [/quote]
[quote user="Romy the Cat"]…. in the field of cartridges dissectomy….[/quote]
[quote user="Paul S"]..And I coulda sworn I'd just cleaned 'em...Paul S[/quote]
I spend so time figure out what is ...
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Too late now for points, but just the other day I tried to imagine your plan. and I was pretty close.Actually, it is a bit like what I have going now; 15" Eminence bass guitarr woofers in a sealed 3 cu ft cabinet,Oris 150 with 8" B&C midrange dr...
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I am currently planning high-WAF speakers for my sister which have to stand in the corners on the floor. Asking for small corner horns I was told the EV Baronet could be a solution. Simulating it with roughly estimated dimensions I found that the FR ...
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That just about sums it up, all right. You'd think it would be obvious that cartridges are not a viable subject for DIY/boutique building and/or modding; but, apparently, they are yet approached in this way by a small "underground" army of hopefuls,...
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[quote user="guy sergeant"]Some of it, (the current speakers and some of the amplifiers) are in my view, not outstanding. Other items, (the big preamp, phono stage, cartridge, MC transformer, silver cables and largest power amps are exceptionally goo...
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I hope everyone appreciates the value of the foregoing post. IMO, anyone thinking of "going DSET" might read it through several times first. The post reminds me of Romy's earlier (recent) post wherein he wonders how in the hell he did it at all (wh...
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I don't know why the Berning topic gets everyone so worked up. No need for another ZOTL screaming contest. Is this not a hobby where we explore many solutions? It is a difficult subject technically. I for sure can not speak about th...
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Romy said:"I am talking about that “slippery sound” when sonic granularity goes all that way down (positive thing) but along with loosing granularity the transport for the ‘events delivering” is also diminishes (negative thing)."Romy, I have for some...
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Hi.
1) He was very certain that it was not a result of a softening of the suspension or the speech coil for that matter.2) Probably it it is more significant to look at the harmonic structure and decay of the vibrational spectrum of the magn...
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to reel from 7 volts or 700 volts is equal to the reel. should rather ask why or why 7 or 700 volts. should be asked how you intend to use the horn driver, you should ask graphs of frequency response and power handling. build a field coil driver is ...
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AlloI didn't say this explicitly but the audibility of the power supply might support the theories about the flux modulation being bucked by the combo of coil and PS.I mostly wanted to mention the layering idea and - ah yes, that was it: see if you c...
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Hi Romy,You wrote:"They tunes for 115Hz and pushed in room down to ~95Hz one channel and 150Hz another."So do your horns have 115Hz flare frequency? (and have the rear chamber tuned for 115Hz as well)From the pictures the horns lo...
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[quote user="Romy the Cat"]
[/quote] I received a link with description how the YO186 tube that drives my MF was used by Russians. In 30s and 40s it was used in portable film projectors PU-12 and PU-13. Below is the schematic of the PU-13 low frequ...
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The big RCA field coil is the best thing about the Cogent system. It has great "promise", based on what I heard. Although their methods of "developing" this driver seemed confused to me, they do have truly encyclopedic knowledge...
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[quote user="coops"]Are you decrying the use of field coils per se? A friend has been experimenting with them in a specific utilisation and has had very promising results.[/quote] Where did you see in my post above express any condemnation or support...
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hi! Funny... i just passed it in Munich yesterday. Now its mentioned here. Of course i had to stop and have a listen with such cool look. Sorry to tell you, that things a imposter. I left in less than five minutes. It hurts my ears. Totally cold, sha...
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Romy,To clear up a few things about the Kilimanjaro RCA1428 clones.The B&C DCM50 is a modern, neodymium clone/copy of the RCA MI-1428B. It was designed and built by B&C in Italy after Bill Woods of AHhorns talked the CEO into it. The DCM50 is...
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