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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I kind of thinking about it and I am not sure that I have an opinion. In the former PP2000 I stunted buttery with over 100K capacitors, presuming that it will driver DCR of buttery lower and therefore improve the day-to-day decoupling of PP2000 from ...
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PFC is a function of adding Xc using capacitors to bring the current in the circuit downwards.What you have is an inductive load giving a lagging PF eg a simple motor gives a PF of 0.85.Thus the inductive element can be manipulated to bring it from l...
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Rectifier in linear audio systems draw high current at short time for charging psu capacitors.
I = Total peak current of an audio system at full load (current draw from wall AC)V = Voltage of main ACP = Total Power of Audio System = ...
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Not necessarily. Collect the large parts that you will be using (Power Transformers, Output Transformer, Plate Choke(s), Plate capacitors, etc.) put them all together on a table and try to visualize how you would like your amp to look like preserving...
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Hi Cat. I run the 12AX7s just a hair over 1mA each, and the 12AU7s at 6mA. With differential pairs and bleeders, it ends up at 39mA on each +/-300V rail. That works out to 7H minimum inductance at 60Hz, using the standard formula.&n...
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I use to have IDAT-44 and IDAT-M (automobile version). I did not found them interesting, though they were not stock versions. Admittedly all Museatex stuff kind of “need work”, and even the stock Bidat was quite dead DAC.
It is still not know why t...
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I like to stress a point that the mammals that write thier doodles for audio publication are not juts ignorant fools but also the cheap, low class, falseificators. No wonder that the audio manufacturing companies do employ the so-called reviewers as ...
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There are many ways to deal with EAR-843PT. To my ears it works wonderfully, this in my case it coupled with Expressive Technologies ET2 transformer that probably takes in totally new league. I kind of so addicted to this transformer that I even run ...
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[quote user="Romy the Cat"] your diver might be a very good MF diver but it does not go to region where the “tizzing” live.[/quote]You may not believe me, but the driver start to roll off (very smoothly) after 14kHz and at 20kHz is at -6dB. I intent...
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Yes, there are a lot of paths.I can see that many DIYers are very much stick on crossovers, changing capacitors, choosing slopes in digital filters - FIR or not FiR and so on.I know very experienced people who now say that with digital crossover he d...
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The paper drivers, at least, look like the best of the vintage stuff. Of course it's hard to say without hands on how GIP products have translated from Vintage WE and, judging by the literature, either the "vintage market" is irresistable to them or...
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From another perspective it has film capacitors and the non-polarized Nichicon Muse caps. They take up-to to 30 days to burn-in. So, it might be just too fresh. I would not say that it kills everything – it is just a very-very slightly brighter, enou...
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Well, below is the email that I got from the man. I feel
that he is diagnosable. I am not the Doctor House but I have been insisting for
years that any person who spent proficiently in Audio Industry some time is fully
diagnosable.
On Thursday,...
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Yes, referring to my initial post on the thread: something in the Super Melquiades is very freaky. I did not use it for a week and this morning I tuned it on. The amp generally does not sound good for a first 10 minutes and reaches it’s stable ...
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Well, the subject of capacitors in that PS should be resolved. We discussed it a lot with Dima and he feel that I am fool all my idea to try in this supply “minimum capacitance”. He actually does not believe in small capacitance, he has a vision how ...
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"... and I do not know if 3A/167M is better than anything else and I do not see why the metal socket is necessarily better then plastic – the socket is not the part of the tube."As you know, the 437A is like an on-steroids ECC83, ALL glass built, no ...
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I have seen what kind cars Detroit makes…
I kidding. Thanks, Wojteck, I will consider it. I have to visualize what it will be. I know that it will be >80gain and it will be useing my long-time-ago-prepared capacitors but there are some problems t...
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[quote user="Paul S"]But if I leave them down for a while, it might take 4 or 5 hours for them to get good.[/quote]Yes, it is exactly it. It is OK during the winter - sometimes run the power amps for days, but during the summer to run all 12 Milq’s c...
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I understand that AudioValve would like to keep their generic chasses for all their models but I think what they did with Assistant 100 amp is very wrong in term of chasses architecture. They claim the “special familiarity with 6C33C” but it is not w...
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Two days ago a local audio guy was visiting me and he was listing most of the day. When I asked him to comment on the playback problems he made insisted that sound has some brightness/harshness “around top E”. That was interesting as I know that it ...
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Your comments are quite funny and contrary to the facts. Romy can hear, as I can too, the difference between solid state amplification and tube amplification because his system is properly setup and can resolve all the nuances. The slightest com...
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Are we all in agreement that up to now "the best power" in terms of sound has been the best wall power?Maybe this has something to do with the fact that on a good day there is a LOT of current pushing the "best" wall power into a system tha...
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A clue!You are not using the ground on the PP3000 unit and have ferrite packages on the incoming mains supply.I am guessing that you have fitted a clamp directly around the power cord.If this is the case, then you are using the ferrite on the ground ...
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[quote user="Romy the Cat"]
cv wrote:
I wonder if it is the reactive components (blocking caps etc) that are to blame here, seeing as much of the problem is in the lower bass.Chris, what you said made me to think.
Loo...
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I never heard people shunted battery with caps in order to change sound. In case of battery power unit it does not make sense as there is no HF noise some in the picture. Yes, battery has own noise but it usually no where hear what the audio circuitr...
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...but it will take me N-years and I'm in EU :)I could make some preliminary steps this Easter, talk to my winders about transformers etc.I'm for sure missing the FW and out put cores (AMCC800A will not support 120H at 300mA, low DCR), but getting ma...
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Jam,Yes, as I now see, you are right that the bearing was merely filled to the rim with oil and that it doesn’t have a pump feature (like some older turntable bearings did). And yes, the lead is touted for anti-seize (mostly copper these days), but a...
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I would say that there are advancements where you would get far more unanimity on the progress that had been made than one would do for audio after the development of tape. I don't think anyone would want to go back to cylinders. So there are advance...
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It was a bit tricky to make it works. The Schwarz original crystal is imposable to get and the new one that I got from ICMC had different internal capacitance, so I was forced to shut them with additional inductance to let the oscillators to fire up ...
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[quote user="Thorsten"]If you do, do seek out old Air dielectric AM tuning Capacitors. You only need 110pF & 330pF, both can be found suitably. Once you tuned the RIAA to perfection simply superglue the shaft in.... I used to use that trick in pr...
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