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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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In terms of the length of the horn, I'm allowing myself a total height of 7'6" (just below the average ceiling height of 8'). In regards to the mouth diameter, that's another matter. (It appears that I will have to build two [2] different...
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[quote user="jessie.dazzle"] The AK150 and 152 are not new creations dreamed up by Mike; they were made back in the day by Vitavox but nobody ever talks about them and I have never seen either. See the Unofficial Vitavox web site; AK150 = Catalog...
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There is more information about the Lamm new LP1 phono preamplifier, including the price of $33K
http://www.monoandstereo.com/2012/12/lamm-new-lp1-signature-phono.html
The images do charley show two step up transformers at the ent...
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[quote user="George"] Recently I had a brainstorm (very small) and bounced it off Guy (who is a terrific person to talk to) and he thought it would be worth trying. Since I was driving such a relatively long length of RCA cable (thus subject to noise...
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[quote user="Romy the Cat"]
(1)Interesting that you omitted in your response the “insultingly-extended HF”. I feel it one of the biggest problems as luck of “transients from distance” people foolishly substrates with a presents of bogusly-supplement...
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The exceptional 15-inchers would be two fitted in two categories: the bass 15-inchers and wide-range 15-inchers. It is imposable to think about the exceptional and wide -range 15-inchers and do not mention the 1946 -1973 production of the Tannoy Dual...
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I went there a year or so
ago and even had in my room Klipsch corner horns. I do not know, it is bit
freaky. You need to understand that all of these surface-loaded folded horns
are not really a horns but resonance chamber. It does not means that ...
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[quote user="starboy"]I decided recently to add the Shelter 901 to my collection of 'Groove Riderz' and wondered what was the justification of the price hike for the 90X. Read the same review as yourself and thought that I learn't nothing other than ...
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[quote user="hagtech"]I have not tried this tube yet. It might push the limits of the tester. The 6.3V heater current supply is nominally rated at 5 amps. It might be ok to push it to 6.6 amps. I have to think about this, make...
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In reference to the two (or three) prototypes, the base design contains one (1) driver, a second proposal to the base design uses two (2) drivers (using almost the same exact enclosure--an increase of volume/area in the chamber containing the two [2]...
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[quote user="Johann"]Hi Romy,i want to use the 6E6P-DR (triode mode) as driver in my tube 45 amp.I use a D3A (triode mode) with Anode choke at 180V, 12mA. Grid 2 is connected via 50 Ohm resistor to anode. Grid 3 (pin 8) is connected to cathode.Th...
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Hi Romy
In my experiments, the corner loading influenced largely between 120 and 350. Above 350 u need a phaseplug on the cone.
Below 120 its pretty much immune to the details of corner loading, max a bit.
Below 50 its even sensitive to the wall m...
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[quote user="glaesemann"]Roman in a few posts you have made reference to the interesting topic of cable current loading. I'm keenly interested in your findings.[/quote]
Glaesemann, there is not a lot to talk about it. My observation showed that prac...
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[quote user="Andy Simpson"] (2) Yes, in most recordings - which are unlistenable - multiple microphones are used in close proximity in order to artificially generate 'clarity'. The side effects (as you noted) are massively exagerated (but uncon...
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I spoke with various people about availability of upgrades for Sansui TU-X1. I have to admit that I have no problems with it sound and my concern is purely intellectual – there are better sounding resistors nowadays and there are better caps then ele...
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The Other End of the Single End: Modern Horns Done With Flare An Interview With Dr. Bruce Edgarby Dave Glackin, printed in POSITIVE FEEDBACK. 1996
Dave Glackin interviewed Dr. Bruce Edgar in his home, prior to the 1996 WCES. A follow-up on the speak...
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[quote user="Romy the Cat"]Ok, let dive a little bit further into my examination of the subject of Lamm ML3
What is important is to undusted that my view less targets the Lamm ML3 but rather it targets the ML3 as a representative of entire cla...
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Of course i am referring only to the horn part of a 210-type enclosure. Below the horn cutoff, perhaps around 70hz for the 210, the remainder is filled in with a wooly bass-reflex peak, which gives these boxes their characteristic fluffy, indistinct,...
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Hi Romy - Yes, the sub is Bruce's seismic. It is big as a refrigerator, and the idea of having 2 huge boxes in this little room is, well, intriguing.... Being new to subs, isn't there an obvious danger of over loading this little room wit...
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I would like to think a little about the monitors. A monitor is kind of bogus name but useful. I usually call a loudspeaker that is not floor standing as a monitor. Sometime they called bookshelf but I hardly image any loudspeaker on a bookshelf…
In...
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It does not sound right to me. If I am not mistaken then it has 2 X2uF caps. What 10uF coupling cap can do there and what 1000V cap does in ML2. The 1000V cap is almost $6 more expensive – Lamm would kill himself but would never allow such a waste of...
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Sounds too good to be true, Romy. But it is winter, and I admit I'm still holding my breath.From the reports so far, it looks like the thing might be worked with to good overall advantage; but, as usual, some significant adaptation is...
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Among many exiting features of the room that I have in my target there is one that among others features made me to live the room from the first sight. The Cathedral Ceiling has a very interesting ledge at the perimeter of ceiling. When they built ...
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Maybe this is a mic problem, or a Sunfire problem. But, like I said way back when, the raised floor sink is not only the 5 Hz structural/footfall resonance, but it is uneven broadband + & - with respect to hi-fi, and the helluvit is that your ho...
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Hi Romy,
of course, no manufacturer give one value only (non that I would know), but will spec. a range starting with some value e.g. >10ohm or say >100ohm and either putting a cap at 500ohm, 1k or nothing at all, meaning 47k (if that su...
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Stuck,
You can NOT stack coils in series to get a “distributed half order crossover”. To make it “distributed” the first and the second first-order filters should be decupled. For instance the first filter might be at line-level and the second at th...
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[quote]This is very bogus notion[/quote]Well I am glad to see you feel that way. You never know - some people cry foul when such happens. "Hey, that was my idea! And now this guy stole it and put into his own product." It happ...
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Alex, I think that there is VERY high probability that your hum is from transformer-correctors interfaces. Get rid the transformer, change the loading resistor accordingly and use the corrector with high outpour cartridge, let say over 3mV. If you w...
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Well, I do have 3 channels of DSEP. Dedicated Single Ended Pentode: one channel (bass/mid 30-500 Hz) with a 307A DH pentode feeding two wonderful Fane neodymium Colossus 12" - one from FS to 150 Hz and the second from FS to 500 Hz. OPT with a lot of ...
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Interesting, How much is what your appreciate in the SPU sound derives from the SPU’s high output. When we load out typical 60-65++ dB gain phonostages with high output 2-3mV cartridges then Sound is way more interesting. I would not speculate if th...
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