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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I do not have a lot of equipment that uses vacuum tubes I have a phonostage and power amp that are tube based. The phonostage used 12AX7 that in there from 1999 and I think they will survive me. The power amp use gas tube 0A2, the output triodes 6C33...
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Hi Romy,
Again, good words (don't want to kiss your ass ;) ). Though, I get your point and agree, one should not think that this winter picture means Goto sound cold (u never know what one could read out of it) .
What Klaus also highlighted, is...
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[quote user="Romy the Cat"]So, you feel that high voltage filedcoil do excite the electromagnets driver somehow?[/quote]I will not call this exitation, let say it dynamic stability.[quote user="Romy the Cat"]What voltage you feel is appropriate?[/quo...
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I think there is nothing that I need to comment – I have done it before many times:
http://twogoodears.blogspot.com/2011/03/more-elodis-tge-gotorama-pixes-plus.html
For sure the owner of this system would get much meter result by ...
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So first in line, the horns. They stressed out that particularly the horn flares where not within the comfort zone of their own developer team.That triggered the recruitment of Bruce Edgar. The design is only his, and they took it 1:1. Of course too...
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[quote user="Jordi"] I am sorry that it took me so long to respond to yours and many other questions here but unlike most of the people who have the time to post here because they are unemployed, I have a DAY JOB and have to WORK for a living. This i...
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After trying all the might be tried with 6C33C (measurement-wise) I concluded that I know that tube very well …in order do not test it. All that I do is taking a new tube, burn it until the start up current is stabilized:
http://www.good...
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Absolutely flat response will usually sound as you've described it; listen to your ears. If you are hearing the opening bass line of "So What" via the sub, you must be running the sub pretty high in frequency to compensate for lack of mid-bass. From ...
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Romy,Thanks for your thoughts.Very interesting your idea to take 110v from half the secondary straight off the pole... I am trying to confirm with the electric company that this might be possible... Otherwise I've got some climbing gear&nbs...
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[quote user="Paul S"]N-Set, why would you disconnect from the house neutral, unless you are using battery power??? This "neutral" is the "ground" leg of your circuit! The house neutral wire is typically white, and the house ground wire is typically g...
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This evening I took myself to performing additional tests with the entire system completely disconnected from utility ground. Following Romy's considerations about different grounds, and Richard's absolute belief in the capacity of a properly working...
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Here is an SPL file you can use to calibrate the volume of your system to the volume of the actual performance.
You can download it on any of our regular formats (Master, DVD, CD, MP3)
While playing this file in stereo, adjust the volume of your sy...
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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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[quote user="Romy"] I see a problem. Sine you have 8 meters interconnects I presume that it a relatively large room with speakers positioned relatively far. This way your common remote control will drive two Placette passive units located a few meter...
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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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I hate when those industry people steps out really and from facts just to maintain the faces. What would be next: they would record at +5dB digital and suggest that this type of sound cure listeners shin cancer?
Yes, Paul Stubblebine is correc...
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Ok, you are getting somewhere. I am not sure why I used the 100R, 50R and 22R resistors. It is good idea in some cased to list the potential of some circuits but it need to be used ONLY what it necessary. Do not forget that in your case you have 5 ch...
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Last night I have an interesting “event”. I accidently unplugged the PP from power line and did not know about it. In a couple hours I realized that the lights on my equipment that all time on are off. So, the PP buttery was drained out. Interest...
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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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.... in home systems for Room correction and general system EQFolks,This is from my own Yahoo group, but may be of interest here....Since writing this I have in fact changed my speakers to dipoles and do not currently use a PADEQ (it will return thou...
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Hi Romy,
I'm Autotech (Lukas Lewandowski) friend who manages technical correspondence and do design part. Personally I'm interested in all horn designs down to 20Hz and I do see some interest in multi-way horn designs from eg. Hungary. IMG_350...
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Hi Romy,I guess I view absolute tone a bit differently than what you describe. I think that each real instrument or person (as in singer) has its own "absolute" tone. It is the sound of what it is (or its gestalt). The ideal speaker...
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[quote
user="martinshorn"] What Klaus also highlighted, is the importance to
him to unlimit dynamics - in order to achieve the most live-alike sound. First
of all, he noticed that Goto pleases him the most with uncompressed transient
attacks more...
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I am sorry that it took me so long to respond to yours and many other questions here but unlike most of the people who have the time to post here because they are unemployed, I have a DAY JOB and have to WORK for a living. This is not a value judgmen...
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Thanks Romy,Yes, I received your advice in the past privately regarding proper size for 1808 enclosure, and I thank you for pointing me in right directions. Yes, sealed box is simple calculation using e.g., WinISD. I am experimenting with&n...
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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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About importance of impedance curve and current delivery of amplifier i agree you but generally we have some numbers (watt for spl) for average condition.
Live or dead rooms and bass extension are also change the numbers .
My numbers come ...
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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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[quote user="Antonio J."] The builder regards VR1 more like an "offset to 0" adjuster than a bias control for the 6E5P since its working range is quite narrow. He asked me to know from you if along the 6E5P's lifespan it needs further adjustment...
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[quote user="peter foster"] My understanding had been that biasing method is a method of setting up a given tube so it works with the wanted anode current at idle with the wanted anode voltage and these conditions are met by somehow applying a correc...
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