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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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LX wrote:"...Lifting ground is OK for a simple test but I do not want to operate like this..."With ground lifted, why not simply run a single-conductor cable from the PP's system ground (or chassis) so that it makes electrical contact with one of...
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Jessie, congrats on the new *TEFLON* sockets. Did you do the cap shuffle, too, while you were at it? And what's this you say; you had to mill the sockets (or the chassis) to get them to fit? Tres droll!Now that your operating points are stable you...
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N-set, clearly you have a much better understanding of electrical engineering than I do (as do most of my pets...)! Still, I am hardly terrified by tank circuits, just wary of inter-component/PS/signal mosh. And I really don't care what sort of div...
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N-set, I am not the one to double check your mathematical solutions, that's for sure. I wonder if in practice the curve values here are effectively tied to variables? I like the Chimera idea, but it has no "locked curves" to contend with, and it us...
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...is a pita, no, no, PITA! In my circumstances I've had so farreasonable results using foamed natural rubber to mechanicalydamp the chassis. Has anyone tried that ridiculously expensivesilicone gel tape/chips?As for the multiple shields on MC's. Hig...
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I wrote, "When you have knowledge about chassis and their pricing..."when you have no knowledge, then nothing is an indicator of quality in drivers anymore etc. Or when you are a buddy from a manufacturer or even worse, a writer.And what I meant is n...
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[quote user="Romy the Cat"]The volume of tone was rising faster than the volume of pressure...[/quote]Congratulations. It is very promising result. I think the degree of tonal density will jump to even higher level if you attach a thick felt on the b...
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This thread has gotten distressingly DIY, hasn't it?But I agree entirely that the pot should be given the smallest assignment possible, meaning, pad/dial-in/isolate the hard line, as far as possible, up to the necessary-only balance range, and then i...
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In my view the leather as a suspension material is absolutely spectacular and this is because it's mechanical impedance is very close to that of the cone (of course made of fine paper) and there is no energy reflected from the surround back to the vo...
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"Success" equals better except for added hum? How lucky is APS to have customers like this?!?Any dimmer switches within a mile and a half of the system? Any variable inductors connected anywhere in the house? Root out anything like ...
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Romy says "
I do feel that enter charging circuitry is the biggest liability of PurePower unit...
It would be a hideous discovery if it turns out that the PurePower unit sounds so good…. because the distortions f...
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Thanks for your thoughts Paul. The subject of the snubber has already been quite discussed.IIRC Romy has turned the whole idea down as uncessary in his context. I am afraid thata snubber may be a sonic move rather than only "engeneering". I'll first ...
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Paul, so far the interconnect shields were connected to the phono pre grounding bolt only--I do not want to pass any equalizing currents between the TT and the phono via the shields (the TT chassis, armtube, etc was connected to the same place via a ...
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Ok, I will try to lower the primary impedance like you suggested, but it will be on the new 6C33C mono block amplifier that I am building. The custom made chassis will be finished by next week and I have the better components waiting to get installle...
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DA, from what you say I do not think you need actions to do now. As I understand the power transformer for the amps most likely has been made. Since you are in design phase and the look forward to have a sever voltage then get 1-2A 12V transformer w...
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Yes, this is what I meant: link the pins using heatpipes to a heat exchanger, in fact I wonder if one could use the heatpipes as the filament conductors direct.The yamamotos are beautifully made but badly designed. The receptacle of each pin is a spl...
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First as stated before, when I 1st received the unit no hum issue it was after it was sent back twice that it came about. 2nd if I use my other conditioner, a Purist Audio Design all is dead quite. The humming out of the speakers stops if you plug th...
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N-set,actually, as you drew it, it became not too complex amp. What I would like to find is some kind tube like 833 only twin triode. Then it would be possible to have one chassis with a single drive and two output power stages. With 100W on fil...
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There is a Restaurant at the border of the Universe. Well, it is not really a Restaurant, it is awful, stinky and oily hut where you can get only one meal whatever they call lunch with dark, glibber Peppermint Sauce. Always the same. Day for Day. And...
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Romy,Try running the left and right signals from the stereo arms, one at a time, into the known-good mono phonocorrector. If the problem is not present then you know the stereo corrector is to blame.Are both left and right channels in the stereo cor...
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Romy,I hate it when I realise I need a different transformer...The following is not an ideal solution because it breaks one of the Melquiades design features, but may be worth trying - cathode bias on the output stage? You could burn up some vol...
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(Quote from your post) "... by building any serious horns you will very fast overgrow the ML2's ability to be flexible." Yes, this is in fact what I meant by "limitations imposed by of a pair of SET amps such as the ML2s". Would it be possible to ada...
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The Japanese manufacture Audio Note by the infamous Kondo-San announced a new revolutionary amplifier. The name of the amplifier unfortunately could not be spelled or pronounced in English and therefore the US distributor Mr. Klein calls it “NDiP” or...
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Interesting, I had a prolong conversation last night with Kevin Tellekamp of the Silent Running Audio and we discussed my case. He proposed that the reason why my imaging was changed was due to the Super Melq’s powers supply in my nest stand do not s...
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Paul,I have an L2 that uses this tube (at an alarming rate!), so I try to keep a stock of them... While sniffing around, I came upon a deal on eBay that may interest you (since you are in the US)... Check out item number: 150077022964 ...
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I have recently been thinking about efficiency. Apart from enabling you to use low power amps, is there really any reason why high efficiency is better than low or medium efficiency, all else being equal (and I know perfectly well it never is, but le...
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I'm strugling with dreaded Mcintosh Mr67 tuner . I borrowed one from a friend and it was very nice ;clear , crisp , dynamic so I went out and bought one for myself . It sounds like a mud and matches 100% of your description of average tube tuner...
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Maybe I was a little hard on these tubes. I have this habit of listening to noise floor at extra high gains. Maybe 20dB above loud. It is part of the design process for me. I like to hear all of the hiss, whine, buzz, hum,&nbs...
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It took me a while to figure out an effective grounding scheme for the system, and it has taken me until today to finally get around to lifting the K&K's chassis ground at the wall.The unit is still grounded to the whole system dedicate...
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Here are a couple shots of the finishing process. Foreground : Pair of 180Hz hornsLeft : Halves of a 115Hz hornRight : Pair of 400Hz hornsNear the center of the above image there is a rectangular box of sand... This sand is w...
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