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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Having lived with back loaded horns for a few years (a few
decades ago I was infected with Yellow SingleDriveritis), this topology brings
up a lot of memories.
Rommy, if my eyes don't deceive me, I am detecting a blurry 15’’
firing be...
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Hi guys, these do seem quite interesting, but much of the written hoopla i've seen is coming from some of the less interesting characters on another BBS. from a fairly capable system i heard last week, the S&B's set for maximum gain&nbs...
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Hi to everybody,I have used those caps: teflon V-caps, AN copper, Jensen copper, Siemens at the signal path of a tube power amplifier (300b SE) application. V-caps are technically very good, very clear, less microphonics, but missing s...
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are pair of jbl 2420work with 100-130 voltpower supply is with 5u4 tubei use with diy tactrix horn and jensen field coil woofers.crossover at 800 hz 6 db or when use 3 way multiamplification 800-8000 in this case tweeter is old jensen-magnavox.no sel...
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Hi guys, these do seem quite interesting, but much of the written hoopla i've seen is coming from some of the less interesting characters on another BBS. from a fairly capable system i heard last week, the S&B's set for maximum gain&nbs...
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One supposes good sound, but... come on, they can't be THAT good (can they?)...http://www.partsconnexion.com/catalog/CapacitorsFilm.html Deulund tabs on the bottom of the pageThey also say Jensen on them, meaning, I ass-u-me, that J...
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Hi to everybody,I have used those caps: teflon V-caps, AN copper, Jensen copper, Siemens at the signal path of a tube power amplifier (300b SE) application. V-caps are technically very good, very clear, less microphonics, but missing s...
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I have run each of these for long periods and can validly comment.My power amp circuitry is a 6N1 based Mu Follower driving a 2A3 in turn driving a 3K Tamura amorphous core OPT.The 6N1 tube is a special military type that is not freely available.Ther...
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I have to say, this might be the "best" review by MM that I've read. Certainly it is more thoughtful and less hysterically fawning than usual. I agree that with a stock Jensen SUT (if, in fact, this is what he's done) Lamm might have gone too far w...
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I found the book through the Swedish Library System via an inter-library exchange with the Seattle library. It's what I expected of a book written back then, except it is not peppered with photographs of ALTEC and Jensen stuff....
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[quote user="Romy the Cat"]So, I guess you do not measure flux if are getting. You might measure sensitivity and we might presume what when perm magnets has the same sensitivity as electromagnets then the drivers have the same magnetic flux density. ...
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RobertAren't those meant to be driven by 250W SS amps ? Did you chose driver for your midbass already ? I thought that for this range 8" Lowther DX series with its 50Hz Fs and its "lean" sound could compliment your GOTO drivers (16 Ohm version has 3m...
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I think I have mentally resolved my question: since all of the equipment powered from my lines will work in a chain,there must be one ground and outlets should be quite compactlyplaced. This minimizes potential differences between the "grounds"and th...
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Hi Roman,[quote user="Romy the Cat"] the S&B unfortunately does just gain, nothing else) but for the money S&B do OK. [/quote]Then it does exactly what is asked of it, I asked JB to design it for me PERSONALLY as a "wire with gain". I have be...
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yes romy but my english is badThe JBL 2420 alnico sweet sound with my trumpet tactrix not felt the need for a tweeter, but the high was a bit behind. with the field coil at 100 volts sounds almost equal all'alnico but increasing to 130 volts, so that...
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Ideally, you'd want to drive 35 feet of balanced interconnect with the low impedance source ( say below 150 ohms or so). How low depends upon interconnect capacitance. You can try Jensen output transformer to convert SE to Balanced at the phono-stage...
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As always I tend to play around, experimenting with components in my equipment a little bit. I strongly believe not enough emphasis is placed on topology and the physical layout of the circuit, as sometimes people forget that a circuit is a phy...
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[quote user="haralanov"] I will not call this excitement, let say it dynamic stability. [/quote]
Hm, the “dynamic stability”. This is a new objective…
[quote user="cv"] I suspect [David]he feels more comfortable with coils running at low vo...
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I just posted yeastoday the post above and have got already a few emails asking about the “new” ways that I am planning to use S2. OK, let me to explain what is going on.
The default Vitavox S2 driver comes with thier default aluminum diaphragm with...
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[quote user="gurevise"]Ideally, you'd want to drive 35 feet of balanced interconnect with the low impedance source ( say below 150 ohms or so). How low depends upon interconnect capacitance. You can try Jensen output transformer to convert SE to Bala...
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[quote user="Thorsten"]Then it does exactly what is asked of it, I asked JB to design it for me PERSONALLY as a "wire with gain". I have been on previous occasions been unconvinced of many stepup transformers, be they sowter, amplimo, EAR or jensen. ...
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The speakers i've got are JBL studio monitors using a 2420 (118dbwm 16O) on top and a 2231 (93dbwm, 8O) on the bottom, which already accomodate bi amping, though like i mentioned a midrange driver would probably be a good idea and so a six way amp wo...
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[quote user="Romy the Cat"]audiofilofine, you need to examine your room and your entire domestic environment in order to see where and how you might make your pair of bass horns. Also, if they will be 20Hz horn then are you planning to use next chela...
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RomyThis topic is relevant to me currently as I am attempting to get a 750Hz low-pass into a valve (tube) amp that is driving a bass section ( Supravox 285GMF in an Onken cab ).I have run through a few options in my head but can see various problems....
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At last weekend's HiFi Wigwam Scalford show several members brought together various elements to make this 5 way speaker system.[IMG]http://i254.photobucket.com/albums/hh107/pure_sound/communalsystem.jpg[/IMG]Picture courtesy of Alfie29021. Raal Amor...
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Thank You
I'll experiment with the PSU a little. The transformes have only 1 Ohm DCR
and total supply impedance for a channel would be ~ 45 Ohm (with two chokes in series) Imput choke looks like can take 1 A current!All Iron is mil quality and p...
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I like to stress a point that the mammals that write thier doodles for audio publication are not juts ignorant fools but also the cheap, low class, falseificators. No wonder that the audio manufacturing companies do employ the so-called reviewers as ...
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And you have proved it: I am reading (and studying) GSC for over 15y and, as I have worked in Physics research for some years, I am eligible to say that you are performing experimental Physics using scientific methodology. Even failed exper...
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Romy, light a cigar, make yourself comfortable and try to follow my thoughts.
Both contraptions are topologically equal: If you consider that in Jensen, A is a triangular box equiva...
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[quote user="jweiss"] When we spoke at CES, you mentioned that your experience with field coil drivers only extended to cone types. So I assume that you have never heard any field coil compression drivers. That would include the WE 555, 594, RCA 1428...
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