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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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Hello Dan,Love how you pass that cable through the port, I used to do that too...long time ago.Why are you crossing your 250hz horn all the way up to 1 khz?The 2445 should be able to go much lower. Have you measured the response you are getting from...
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Hi Pete,You have a similar size room to me. I'd rather like a large 4 or 5 way setup but don't have the space. I use the S2's (in barbaric stylee) in damped RH330's. Beneath them I use a frontloaded (folded) bass horn Vitavox made called the Oracle. ...
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Nice post Romy, you're probably right, I can't say since I've never listened to a pair of speakers that really told me "what can be done". I've always owned and listened to speakers that are commercially made, and I've had to choose among the ones th...
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Bill, I am happy that you've improved your bass. As Romy mentioned in an earlier post about Bruckner, RTA is just one tool, and we have to listen and hear results with Music we know and love. When you told of the disappearing S2s, I was going to ment...
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hi Woitek. The K33 extend the bottom end by the high Q, to almost 40 cycles . Which is only ok if you work with passive XO on a single amp. Well that's how they were designed. Having designated amps that allow you to steer the parameter or even bett...
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Tom Danley, the owner of DanleySoundLabs is an interesting not BS-type of guy. I would not be surprised if his middle-like speakers sound more interesting then majority if high-end audio speakers. It not necessary says that his Danley’s speakers grea...
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Personal, I do not use WE555 and I do not (would not) use the WE555-type horns. Hypothetically if one would go for 4-way system with WE555-like driver in upperbass then it is valid solution, not something that I appreciate but valid. The WE555 is ve...
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The units that i put in my pictures JBL AND ALTEC A7 both designs have a resonance just like all wood that you would rap your nuckels on even 2 inch thick plywood will resonate at a given frequency, that goes for glass, cement, metal, they all do...
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I have seen that people online react surprisingly to my post above. Hey are accustom that I am hyper-demanding and tough for production of DIY speaker attempts but above I suddenly proposed to relatively mediocre speaker to become the become th...
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I was there and heard it a while and then came back the next day to see if what I heard was true... it was.I talked with Allen Sides who was there showing his speakers and having a good time. It is a 3 way speaker, It has a 1" JBL compression driver...
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I wonder if these guys were associated with a group I hung around with in Venice, MANY years ago, back when the old pier and "ballroom" were still operational, and they were recording rock groups in the ballroom and also doing "demos" in a +/- "garag...
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Ok that was a long road to "stick with vertical alignment, and stay away from BMS." Back to compression drivers, and implementation...
If I were in your shoe I would take make as you wish but wish a slight correction:
65Hz Tractrix fro...
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All below is written by Thomas Dunker
Yeah, "sound consistent independent of signal level" is a very precise way to sum up my whole speaker philosophy. Anything that is assumed to be constant, but which actually changes with signal dynamics is what ...
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Hans, indeed, generally it
it not a good idea to have idea put crossover point in between 2 and 4K but it
is a general rule. That rule that might be very much overridden by a good
practical implementation of a particular installation. To do this “...
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Tonight I finished two
horns at once. One was a shortened Goto S-150 horn that now has a
Fane S 8M, without back chamber so far. Dimensions are now 1.1m deep, 11cm throat, 75cm mouth. It is replacing the Avantgarde
Trio midbass horn r...
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[quote user="Jeffrey Jackson"] first, basshorns... the basshorns that I posted here some years back are my straight ~50Hz horns (my memory is fading)... they are 8' long... then rear chamber.. mouth ~ 3' x 4'... throat ~8" x 8"... rear chambers of va...
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[quote user="Paul S"]Murat, that's a lot to ask from one driver. [/quote]1000-12 000 is 3.5 octaves.300-3000 is a bit less.[quote]In any case, if you do get useful results with the paper driver, you will have to turn right around and integrate it bac...
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N-Set, the Tesla AROs make much better mid/upper bass than Altec/JBL, etc. The "factory"/"theater" boxes for these are HUGE, with double walls, basically IBs, but they can indeed "pound" from a smaller enclosure, or even OB. I hoped Fikus would eit...
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Wojtek, Yes, too late. Once you've heard a good "stupid horn installation", there's no going back is there?
Yes, something similar to what was shown in Jeffery's GOTO installation. It should work the same on the floor or ceiling, (...
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[quote user="Vasyachkin"]expertise = experience X intelligence a cockroach needs millions of years of evolution worth of experience to have the expertise necessary for it to be able to do find food. leonardo da vinci didn't need to experience flying ...
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[quote user="Paul S"]Romy, no doubt the following derives wholly from my ignorance on the subject, but I have not been able to get away from a sense of "variable compression" with any compression horns I have tried. By "variable compression" I ...
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Terry,
I did found that PP amps were good to drive BAD compression drivers (with ceramic magnets). The irony was that the better amps to drive the ceramic magnet were not just the PP amps but the solid state PP amps. Do not ask me why – I do not kno...
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Romy wrote:For Vitavox S2 to use Tractrix 600Hz with 1.5KHz filter is a bit too close in my view unless you stay with second order filter. Would you elaborate further about your warning? I'm very interested in this application.I think you use the S2...
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[quote
user="Murataltuev"] So, driver for 1200hz down is under
consideration.I'm going to try 2453, 2451, 2490 and Supravox 12" for this
range.I've ordered 200hz LeCleach from AutoTech with 6" throat to try
12" Supravox for the 300-1200hz range.A...
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Romy wroteStill, somebody Armen reports that Cessaro with $2K TAD driver were compatible to Silbaone… so what the purpose to pay more than $700 for a pair of JBL 2440?
I must say sound of Cessaro was far more sofisticated than Si...
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[quote user="Macman"]Hi Romy,Its an Altec 416-8A driver in a ~100 Hz exponential horn, Jbl 2441 in 350Hz tractix, Aurum Cantus G1 tweeter and Eminence Definimax 4012 HO in ~30Hz Tapped horn.I just hooked it up and the highs are promising but I though...
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Actually it is very possible that it might be so. I made some rudimental measurements and concluded that RAAL tweeter and JBL midrange mounted in the same baffle has non-perfect time aliment. So, I will need to use gaskets under the drivers to time-a...
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Hi, Tim. This is difficult question, and it is difficult in it’s abstractivnes. I really do not understand, or understand but refuse to acknowledge the validity of the word “respectable”. How valid for YOU would be a “reputation” of this driver if it...
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Yes, the bottom response is about right. There is a thing about the bottom response, I might be a bit in unchartered territory as I do not know how properly calibrated your measurement devise and many other conditions that might affect the measur...
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