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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hi Romy…and fellow audio nutters. I’ve bitten the bullet, and shifted from BLH to front-loaded. Yes, I was an idiot, a moron for not doing this sooner. My project is ‘humble’ by Romy’s standard…but I feel it meets the following objectives I h...
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Hello Romy
Looks like you may be about to set us off salvaging smoke alarms (like that boy scout a few years back) ;o)
An idea that I haven't seen explored yet for low level stages is the use of Peltier Effect heat pumps to cool the valves. As ...
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[quote user="hagtech"]My Stu never got a reply by the asylum inmates. Maybe nobody there ever heard of a 7788. No help.[/quote]7788, gain/noise/bias vise, as a penthod, is pretty much idle first stage for not-extra-stages low input preamp...
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I do not know here to start. I absolutely assertively insist that under normal circumstances it is absolutely imposable to buy matched pairs of NOS tubes, particularly the high Mu tubes. When sellers advertised the “matched pairs” I just discard the ...
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Rowuk, we do not disagree about the "battery/dynamics" equation. As you know, the "accepted notion" from the pundits is that "battery phono stages lack dynamics", and the one expensive unit I've heard did seem lethargic, albeit in a "salon". Howeve...
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[quote user="Paul Costa"]I have a PDF file of the manual if it interests you to read it, I can email it to you. The unit weighs 80lbs, uses 6 6sn7's. What I found a little odd was the spec for the phono is it says : MM Phono Stage Gain: 64 dB at 1 kH...
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I played with this Behringer DEQ unit for a couple hours. What the magnificent machine would it be if all functionalities work! I mean they all work but they all make sound like shit, even this unit in hard-bypass sounds like shit and there is no oth...
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I was asked a few days ago what I think about Zandèn new CD player and I replied that I do not think about it.
Truly, those companies produce new models each 18 month to initiate new rounds of cash extraction from clueless, deaf and blind audi...
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I think that picking a DAC is like picking speakers - regardless of the price, we don't know what we have until we get there. I do not think that it is possible to compare digital and analog playback forms. With a turntable we have as many choices (g...
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Alex,
I cannot answer your questions objectively. It was over 15
years ago when I was working with this phonostage and since I built the last
version, I did not make any experiments with it. I do feel the design is
spectacular, and I am lu...
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I just completed (DIY!) several "factory" "upgrades" to my SE phono stage. While I had no frustrations with the unit, I have been reading designer Kevin Carter's careful explanations of the changes he has worked out over the past few years. These mo...
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[quote user="Romy the Cat"]
How difficult is it to find 437As good enough for a phonostage? For commercial applications is it a dead tube. WE might produce it again when they stated to redo the tubes but the existence of the Russian 6C45P pretty mu...
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[quote user="de charlus"]Due to this thread, I called the friend upon whose boat I heard the Vox Olympian in order to find out precisely which DCS DAC he was using with his TLOX to get the sound that I found so remarkable. It turns out that whilst th...
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I do some very interesting experiments with Rohde & Schwarz tuner. Dima and I have discovered a way to use the Schwarz without the wide bandwidth amplifier, driving the Multiplex Decoder from the Schwarz’s preamps. Basically we put two stages wit...
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[quote user="Romy the Cat"]I have no idea where this saga with REL leads me. Even though I do have substantial sonic improvement over the original REL version I still do not know if I like this tuner all together. The 50 years all tube tuner with...
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I decided to make this post in this thread (you are at a second page of the thread) about the “second-type” phonostage. My needs for a Santa’s bring me a nice “second-type” phonostage really got stronger. If you remember my 7788-7721 tow stages,...
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[quote user="Stringreen"]Indeed I do know that high wattage does not necessarily mean that accurate dynamic shadings are successfully reproduced, however, I will tell you that my high power amps do the job well, and his tubes do not. ??[/quote]It has...
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Gould was such a great talker! I love listening to him on just about any subject. But don't let this stop you from digging into it, if you want to "fix" it.LBJ, there are bound to be periods when, and plenty of varying reasons why, one just is not ...
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I’m glad you talk about geometry, but to respond to this I have to refer to other brands. I will only talk about facts and hope it’s not offending anybody.My basic point is: the flare rate has to be coherent right from the entrance of phase plugs. In...
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I pretty much know what I need to do – I need to go for shaper filter built in my power amp. The second order I have no is too impactful to midbass, so I need to do for 2th order or perhaps for 4th and try to integrate it. Whatever it will be I thin...
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Robert,Many thanks for the clear exposition of the technicalities to consider in making what is on the face of it such a simple choice. I however disagree that the points being considered here, as both you and Romy seem to suggest, only ought to be c...
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The top 3 are to scale model of the throat, mouth and length you posted above without the horn profile.the bottom image is the equivalent flat pattern.If you were to cut the pattern out of material and sow the sides together, add a ci...
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[quote user="Dresden"]… One very important component I'm leaving out of the cost of the horn is amplification (the horns will be active, using class-D amps). The reason for my choosing class-D amplification is that the modules and various compo...
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[quote user="slowmotion"]Good news if the analogue stages of the DCX2496 is so bad. So the improvement of a modified unit should be worth the ekstra work, and remove some of the x-overs negative influence on the sound. Which is always good to know be...
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[quote user="op.9"]the horns come out of a rakk dac with lundahl LL1674 passive outputs the midbass use a behringer DEQ2496 (26cm delay) modified with passive outputs.[/quote]James, if you use this DEQ2496 then you might find this thread worth attent...
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Well, here and there at my site I’m calling for rationalism in audio and suddenly I go enthusiastic regardless a perspectives of $200K Cessaro’s Gammas availability. Sounds hypocritical, doesn’t it? Well, not really.
I’m under no presumption that go...
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[quote user="N-set"]
Hi Anthony,
trying to copy a known good solution - too little time for experiments recently.[/quote]Well, Romy had great results with the Placette and his Dannoys, so that is the known good solution as far as I am con...
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So, the first DSET is still downstairs on the electronics bench and I am back to work for a while, but not too hard and not for too long (I hope). I've added all the filters and checked and tested and changed some more things and decided that it was...
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Hi Romy,
I am planning my own DSET build. I have based my speakers on your Macondo and
am busy turning MDF horns in my spare time.
Once that is over I will move onto amplifiers. I plan to build a fullrange Melquiades for a
friend and the...
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[quote user="anthony"]I plan to
build a fullrange Melquiades for a friend and then if that works out the DSET 6
or 7 channel version for myself. [/quote]
That is very good approach in my view. The
problem is in this approach that you have t...
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