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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="N-set"]This is what I try to stick to: Try to create closed magnetic (steel) loops around magnetics. Ideally acompany itwith closed electric (copper) loops. This I think Pieter has done that already for you, but,as Romy impicite suggests...
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[quote user="hagtech"] Iwas going to ask you about that funny looking damping material. Then you explained it at bottom of post. Very clever to use mouse pads! Lately I've been using cork & buna rubber sheets from McMaster-Carr....
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[quote user="hagtech"] Yes, steel chassis can be both good and bad. It likes to conduct magnetic fields, so you have to treat things appropriately. A little spacing under a choke can go a long way. Otherise you have a 120Hz motor.&n...
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it might be tricky for this (as it is) to work well as a phono stage! It also seems rather involved for a line stage too. (too much gain?) The chassis does look substantial though. Presumably the valves are pcb mounted inside? What will y...
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You keep coming back to the 85 dB thing, and I am curious to know how you intend to get that kind of gain without including a preliminary boost from a step-up transformer; at least, that's what I have understood you were saying.Then, how do you ...
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[quote user="Jordi"] If I build them ... I'm going to use different cases. Man, the one's shown are U-G-L-Y. [/quote]
To my view the chassis for the full-range Melquiades is not ugly, in fact I do appreciate the design immensely, functionally a...
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Yes, I like it too. It is in a way symbolizes a termination of any superficial ambitions… the shallow ambitions that we have so many in our anxiety with RIAA correctors. I assure you that if you heard the “End of Life” then you might understand where...
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I should add that disconnecting the "ground" wire as mentioned above will most likely not solve the issue.
It will likely also be necessary to ground the chassis of the components directly (to a nearby water pipe for example).
When grounding t...
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Just to be clear : If chassis ground is carried by the interconnect from chassis to chassis, then ground only one chassis.(Romy, it would be great if we could edit our posts).jd*...
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Even when you go for a 30K Speaker and you have knowledge about chassis and their pricing, you will discover, they are rarely more than 160 $/piece.And they sound like that. But they eye is cheated with an excellent high gloss paint or expensive wood...
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I had no chance to listen to his latest Designs (I know his L2R, LL2 preamps and the ML2.1..) but probably he wanted to realize his latest ideas (who knows) or he realized that in some parts of the world his existing units are simply too cheap compar...
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...are purely decorative."
also, "Three seems to be the magic number."
Whatever works, of course, but...
Paul S...
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I told somewhere at the site about my idea of Zarathustra.
The amp as good as it is but I want to make it super compact and with max efficiency.
The efficiency I was considering to get
by making the secondary of output stage switchable. I got fro...
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For vibration control coming from multiple powerful indictors I feel there is nothing better then the “wing strategy” that invented for 6-ch Melquiades. Sine I have all transforms and chokes in toroid shape I put them on L-brackets and lifted them up...
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Hi Romy,I am designing the power supply chassis for the DSET at the moment and hope that you can remember some things about how you managed the grounding.All power supply components up to but not including the filter caps for each power supply will b...
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Just to be clear : If chassis ground is carried by the interconnect from chassis to chassis, then ground only one chassis.(Romy, it would be great if we could edit our posts).jd*...
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Actually my SU-2 has multiple shields for different reasons – they are different type of shields and each of them work most effectively under different conditions and help for different type external noise. However, it is not really important. What y...
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Is the "ground plane" in this case literally a sheet of copper that you run all the grounds to? If so, this may be overkill on the one hand and an antenna/noise magnet/generator on the other hand, and/or it may well make for ground loops. It is u...
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[quote user="Paul S"]Is the "ground plane" in this case literally a sheet of copper that you run all the grounds to? If so, this may be overkill on the one hand and an antenna/noise magnet/generator on the other hand, and/or it may well make for grou...
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[quote user="Paul S"]N-set, I am confused by this/your most recent post. If you are saying you have discovered a "quiet condition" along with the desired curve and gain, then you are done, no? If it works, it works; good for you; be thankful; leave...
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[quote user="Paul S"]N-set, I don't know much about the theory, but maybe you have focused on "uniform ground potential" while neglecting the effects of EMF? (Not to mention the EXTREME difficuty of maintaining a "single", non-reactive "ground path"...
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I have a conversation yesterday that encouraged me to think again about the Zarathustra II project. This 250W of pure class “A”, 90A capable hybrid is sitting under my bad horns. All parts are there and the amps 90% built… I need to finish it. It was...
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Ah, you use those gorgeous VPI boxes to host transformers. No wonder it does not sound well, what did you see the anything from VPI sound well? Seriously, I do have those VPI boxes, I do not remember where they come from to me but they are too go...
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Many audio publications grand some kind of idiotic rewards: “Product of Year”, “Editor Choose Award”, the “Best Sound at Show, “The Golden Ears” and so on. Trying to stay in the moronic awards-granting crowd I decided to form my own award: I would ca...
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[quote user="hagtech"] Yes, steel chassis can be both good and bad. It likes to conduct magnetic fields, so you have to treat things appropriately. A little spacing under a choke can go a long way. Otherise you have a 120Hz motor.&n...
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[quote user="Romy the Cat"]I think that you did not exactly my version but made some modifications; I do not know/remember what they were. [/quote]CCS heating of the tubes based on LT337A, 2x0.47u+470K at the output,my filtering is a bit bulkier at ...
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[quote user="KOTriode"]It's 60Hz hum, caused by both mechanical and magnetic field coupling to the output transformer. I used a toroidal transformer and thought it would not caused this problem but it did. When using an external power supply for ...
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I do not remember which one I used. I remember that I was deciding if to mount them on chassis vs. to have a small board with tube sockets under the chassis and bring the tubes through the chassis. The board mounting is better as it decuples the tube...
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It looks like you will be building not DSET but a full range amp. You need to come up with the chassis design and it is a bit complicated possess. Do not be in hurry with this possess. You need to think about the location of the main elements on chas...
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[quote user="xandcg"]You can run RuneAudio on anything Linux. You would just basically need to get the config files and put it on the right place. To run the nice Rune interface, what basically is a php website, you would just need to install some v...
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