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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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My first impressions a about the “differences” of field-coiled derived form the time when I ran the Telefunkens war time drivers but at that time I had no reference how the same driver would act with permanent magnet. Also, the Telefunkens are the re...
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A six year ago or so when I played with different compression drivers I bought a pair of Dukane 5A540 and at that time I was not able to find any information about them. Nowadays I was pointed out that an eBay sealer “ bayleafs” actions a pair of Duk...
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[quote user="vuki"]The best sound at the Show (to my ears, again) was in Hiraga/Melody room. [/quote]Hello Vuki!To my ears this speaker has a very smooth-sounding compression driver that hasn´t deserved being combined with a 15" cone ...
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[quote user="MINGSU"]GOTO always recommend to use 1st order active crossover and 2nd order passive crossover. The reason to use 2nd order for passive crossover is to protect the driver. Of course, the user can use whatever they like the best but the ...
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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="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="rdrysdale"]Our bass driver has a 12v field coil motor, it developes just over 20 kilogauss flux density using a low carbon steel pole piece. The exit diameter is 4 inches at the moment. The diaphragm is 6 inches in diameter and made of a...
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Hello all :::: This will be my first post, and I am writing first to thank Romy and the lovely Koshka for making the results of their research available to others, and also to ask for help :::: I am something of a "New Horns Guy" (cringe !), as I am ...
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All that I will be saying are the subject of my own experience with horns and my personal observations. You shouldn’t agree and most likely you will not. That is fine with me. I have lot of reasons behind what I will be saying and opened for some cla...
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Hey Boys, Remember even if you use a modern "pancake" compression driver, you still have no control over the flare rate the manufacturer used within the phasing plug. And most of the time they are not willing to tell you, or they don't even know...
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Cat:First off, the Silbatone Aporia is $30k/pr not 100k. You could do 6 speaker surround with Aporia for well under $100k. Hope you feel better now."So what," I say. $30k is already too much for my pocket. I am on a fellowship this year and cheapskat...
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[quote user="MINGSU"] Since they are very old pair of driver, I will recommend you to send them to GOTO Japan to make sure the driver are up to the spec. so you can be sure …. [/quote] Ok, but then they need to send them to me then in order I inform ...
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Yes, Ric, thanks for posting it. I have seen it a few years back, in fact I was searching for the images but was not able to find it. I think that fellow was ether Japanese or from Sound West Asia, I do remember already. It looks like it is 20-3...
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Kea Audio, Regarding the driver. When I meant hard suspension I meant low excursion. Acoustic pressure equals displacement by volume and displacement equals surface by excursion. In horn we add the horn EQ, so for a given frequency we might have lowe...
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Vitavox S2 does OK up to 12.5K ("strong, clean and in character") on it’s center but I never use this driver pointed directly to me but rather at good 20 degree off. (I hardly can tolerate any compression driver point directly to me). At my angle the...
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Romy:Going back, you said:"Vitavox S2 does OK up to 12.5K ("strong, clean and in character") on it’s center but I never use this driver pointed directly to me but rather at good 20 degree off. (I hardly can tolerate any compression driver point direc...
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TAD TD-2002:I have been evaluating these without horns. Essentially, listening to them without the horns, but also with original horns. No difference, as I will describe what I am hearing in both configurations (applies to their high frequency reprod...
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[quote user="Wojtek"]It should not be a problem for you to borrow one of those plastic 150-200 Hz horns for your REPS .[/quote]I heard it a couple of times in a different settings several years ago. Although I was interested in the application ...
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[quote user="Murataltuev"]So, the question is still opened: how to get 300-400hz.[/quote]Perhaps give the JBL 2169H a try. It is supposedly very good from 300Hz to 2.2kHz, but I have never tried it. Use it in a sub 200Hz tractrix horn with a 4" thr...
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Here is where I stay with my enigmatic Remedios project. I build inside of top box at resonator that I tuned 50-60 hertz. So basically it is under two square foot enclosure with a port tune at the bottom of resonance frequency. The port is shooting ...
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I kind of got stuck in selecting an upper midrange driver, above 2kHz. If a driver is going to screech in your ears it is going to be in these frequencies. I was never really satisfied with the range of 1" compression drivers I tried. That is wha...
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Charlus,As you expressed here this would be an End of life speaker project, and I am sure you will not fancy any other speaker once you start with this, even Vox Olympian etc. Yes it will take a lot of money and a lot of time, but you will have fun...
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I was running the F120A for a whole day and now I can’t stress more than I did it in the subject of this post this - driver is ultimate nightmare. In full range it was just too brutal to list it and it sounded sometimes like mechanically distorted. S...
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[quote user="noviygera"]p.s from my experience of having a 500 sq. ft. listening room with 7 ft. ceiling and having two 18" woofers in a infinite baffle configuration, it is not enough to pressurize the room. I am talking about low and medium listeni...
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If I succeed to make my midbass horn at attic then I will face another problem that I do not know how to address at this point. The horns will be powered from Melquiades bass channels – it means it will use a good 70 feet speaker cable. If I go with ...
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Hi Skushino, hope you dont mind me jumping on to your old thread, but I can upon it while looking for ideas re chamber volume and compression ratios for the same Faital driver into a 160hz Azurahorn. Could I ask how you were using yours? Ta,K.S...
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Romy, I think you have neither a system with back chamber now (because the foam is closed pore), nor a "true compression driver" (because the foam is not rigid). Probably you mainly have a second vibrating system coupled to the cone that enhances mec...
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Gordan, I think you are missing the accent of what I meant to say. The Class A or not is not important for compression drivers and the S3 in particularly. I mean it is important and it much be ONLY class A but I do not see any SS amps switching in cl...
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Haralanov, I guess you mean to say disconnect the tweeter on one side of your playback? not the whole left side of the playback...When you use compression drivers it is very important to design the horn taking care of the high frequency response. ...
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[quote user="haralanov"] Take a look at the video: [/quote]I am not sure why you keep bringing the Vengerov’s video again and again. It is quite banal things and those infomercials of Vengerov educating in front of camera the sentimental girls ho...
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