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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Why not? Wilson for many years each 2-3 years updates own flagman. They had Grand Slamm’s number of revisions where they constantly change tweeters, other driver and resistors in crossovers, introducing new rounds of opportunities for the custome...
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I put the final two layers on the choke and temperately closed the amp up as it will be finally done, laying all cables right and so on. The loaded MF channel now has 0.8mV RMS. So, forget about any noise.
Playing the amp today a...
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[quote user="Romy the Cat"]I think it is about right. The 6C33C for upper base has 100K
biasing resistor and 20K to ground in Lpad. That would make ~60Hz. This high
pass that unload the LF from the horns that it can’t handle is very important
as y...
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[quote user="cv"] I see why you want those tap options now - essentially you want to be able to load down the 6e5p but still use all the secondary sections. There may be some frequency response variations in the ultrasonic range by playing the tap ga...
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Thanks, Greg
[quote user="Greg B"] Cap and L-pad resistor quality is critical even in the cheaper models. [/quote]
I do not use any L-pad resistors with tweeters. If you need to reduce the tweeter output I drop the caps and move the tweeter up at t...
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I kind of disagree with Adrian. The wire, the coupling caps, the cathode resistors and many other things are superbly important but it is after the strategic topology is settled. In my view caps, resistor, wire and other things are responsible for th...
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[quote user="Romy the Cat"]You decided to go with mA or are they mV against 1R resistors?
I prefer the second approach personally and I feel that I can moderate the quality
of resistor and I can’t moderate the quality of the milliampere meter coil....
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There is another very good article with the simple resistors conversion network.
http://www.epanorama.net/documents/audio/spdif.html
Still, I would like to make it “kosher” and have ordered the double adaptor with a transformer from RedCo:
http:/...
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@
montesquieu yes , the informations are from Silvio , this is the full text ??
Some
technical information regarding the different versions o...
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(Romy feel free to move this post)[quote user="Paul S"]N-set, I understand you do not mean to hijack the thread with the Axiom, so I actually tried to make generic and/or thread-related observations. I don't know the 6E5P, but generic issues with sp...
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I made today an experiment trying to remove the wirewound LPAD attenuator from the MF’s channel secondary. I was VERY surprised how much better it was with no attenuator. I knew that it was not optimum but the degree it ruined sound was a big sur...
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[quote user="floobydust"]The 2A3 can be almost as quiet, but ONLY in the dual-section paralleled types. I adopted a split balance technique. It only works with cathode bias due to the topology but it is effective. You also need a good quality filamen...
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There is large army of people who dedicate quite a lot of efforts in audio for “voicing” audio components, believing that different passive elements of electric circuit, cables, directivity of cables and many other things are “gravely important”.&nbs...
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Chris,
My frustrations with HF of this amp reminds me the Agatha Christie novels…. however, like anything else it has an end, even a temporarily end….After some experiments and still being dissatisfied with the HF I ended up consulting with D...
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After going through the anal pains of the Image Gallery upload (it is sohuge now that my browser slows down 10000x times loading it and it ocasionally kicksmy router out of this world; can we do something about it?), here are some picsof my assault o...
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t took me 5 freaking years to fin-anally install a second set of SUT's in my EAR834. 4 out of those 5 years was waiting for Tribiute Pieter to make me custom silver SUT's on nanocrystaline core. I even found him the wire. I went boutique and the ...
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Hi ,
Try to be short , so i will not bore you...
I have DISCOVERED fm STEREO 2-3 YEARS AGO, i am not a tech guy , had rotel michi -10 ( nice but thin sound good highs though)
I had Grundig RT-50 ( marvelous SPECIAL SOUND ...
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Romy and Paul,
Thanks to both of you for the further input.
But...
If I do as suggested, and this removes the hiss, that's great; only one problem (forgive my slowness in understanding here); with the plugs in place, how do I then get a sign...
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"Jim Hagerman that is posting at this site has an absolutely ridicules devise...The
ridicules in this devise its amassing effectiveness and absolutely
insulting price. In fact over my entire audio life I hardly had so many
benefits for $50 I spent...
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[quote user="nl"]The 45 is a wonderful tube for running compression drivers.
Many people like carbon comp resistors for the plate load, and paper/oil capacitors for the coupling cap here.
PIOs take some time to break in.
Of course you want...
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[quote user="Paul S"]OK, I think I get it, except you will have a sand bridge along with your crap-load of Farads guarding ground, and your PS out feeds all six "channels", including the DC MF without dividers? [/quote] I will use the same trick ...
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Ok, the Milq MF DSET is well laid out. I have ordered a few parts and it will be on it’s way. I’m still contemplating what kind 400V cap to put right before the DHT tube in B+. I have space and I might go do film cap but I am not sure. Still ...
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Jim, I did try the anti-phase transformer in the secondary but I felt that it did something to sound. I can not do it on primary as I have the pate coil for the first stage sitting on the same transformer. Regarding the sweet spot of the 6C33C - I ha...
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Romy wrote :"...And with 1600 pound per channel you might forget about the DPOLS … -..."No, 1600 lbs per channel would be really serious! 1600 lbs is the total combined weight of the Left and Right channels, with frames, (the frames turned ...
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Romy wrote:"...You are complaining that you have not enough gain in upperbass..."
It is also possible that I'm reacting to a lack of true dedicated mid-bass. As previously mentioned, while the pair of 40Hz horns are under constructon, I co...
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If you search my link with keyword “tuner” then you come across the “Stereo Surgeons” a tuners service center in Connecticut. I was a month ago searching a place to align my Sansui SU-1X and interview a few shops in US. I was searching somebody who w...
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[quote user="Romy the Cat"]The alignment, tuning and changes will be done very soon and then the sound of the both: virgin Sansui TU-X1 and the updated will be compared. I am very interested to hear the result. [/quote] I got my second Experimental S...
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Gordon Rankin of Wavelength Audio did a series of one-stage DHTs with a step-up transformer input about ten years ago. I think they were called the Mercury series. By all accounts, they sounded good, but of course had limited gain, not much power and...
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Hi Romy,Always nice to correspond with you, thanks for your comments.I used the term 'sophisticated' literally: so - phis - ti - cat - ed Adjective: 1. ( of a machine, system, or technique ) Developed to a high degree of complexity.As do you, I prefe...
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As I play the old-but-new-to-me ML2s more, and as I slowly replace tubes, performance has changed a lot, and all for the better. Understand that I am not really talking about the ML2s, but about the sound I am getting, which is so different and...
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