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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Sorry, you're are indeed confused. (long) posted by cheap-Jack on January 17, 2007 at 11:44:26:
"I've already made it very clear "sound is personally subjective", resistive or reactive sound regardless if it is done right. This is a personal choice although such choice can be a wiser one given proper understanding the choice beforehand."Which was the point of my post - that proper understanding of the issues would bring the correct result. However you only highlighted issues with the TVC not the stepped attenuators other resistive methods of volume control,
"I can realize why you're are sorta kinda upset given you're a user of a TVC."I'm not upset at all but very happy thankyou. Your post however was unbalanced so I was providing some balance to the points you raised.
"But as I already stated the published comments of an end-user & a TVC manufacturer, showing the complexity involved in using a TVC successfully."
No, you stated some comments you attributed to someone else without reference or context. That is not "published comments". IF these texts are in the public domain already, then there is no problem posting them here.
"It could be an issue for many DIY Joe Blows whereby thorough "listening tests" on proper equipment is not available let alone "lab testings" to obtain the optimum loading condition as suggested by the TVC manufacturer."
Again, if this is a TVC manufacturer, please provide the detail so your claims can be verified because standing as they do, alone here, they don't make much sense.
"An open mind would learn from others' knowledge & experience of TVCs as I posted instead of twisting it as a kinda attack."
There is no attack here from these quarters so I haveno idea what you're talking about. All I was pulling you up on was misrepresenting the issues faced with TVC/AVC use. I am indeed however questioning your knowledge on the subject.
"(1) Send me your email so that I can provide you with who said what & the FULL texts of the "references" I posted as I do not think it is appropriate to disclose the sources publicly without prior permission of the anthors involved."
Posting them here is sufficient for me thankyou.
"From your post, it appears to me that you, among many users of TVCs unfortunately, did not do the homework on the pros & cons properly before acquiring one."
How do you know that? You have no idea about my background or my knowledge/experience on the subject yet you claim the above.
"Of coure, my assumption is only based on your post here."
And so based on my post, how onearth do you come to that conclusion other than by prejudice?
"If we consumers knew more about a commercial product before acquiring it, we would be making a wiser choice instead of being ripped off by the vendors so readily without knowing it."
No one is getting ripped off here. That has nothing to do with this subject.
"(2) Yes, what I posted was based on reports of TVCs used in tube amps. Whatelse? SS ?"
Any device can be used inappropriately. So?
"(3) Nothing is perfect. Neither are TVCs & stepped attenuators. But given choice, I would prefer the latter, a properly design-built stepped attenuator can deliver constant matching impedance to the driving components & receiving component which TVCs apparently fail to deliver."
A stepped attenuator as most people use will not do as you claim.
"This is strictly from a technical viewpoint. Easier to design, without the inherent phase distortion, DC saturation, & non-linarity due to leakage inductance, hum, etc etc. of a TVC to worry about."
Used properly, TVCs do none of the above.
"(4) Yes, you're confused to say the least, in quoting "how input Z is relevant to how it sounds." From my previous posts re the same topic, I already said if one turns the volume pot, one should hear the change of total tonal balance on top of the volume change. I can detect such tone changes bigtime. If you can't detect such sonic difference, you need better equipment or better trained ears. Period."
Actually I would seriously question what indeed you are hearing. I don't mean that your hearing is defective BUT what from a technical viewpoint you are listening to WHEN the volume pot is changed in relation to the supporting circuitry. Yet YOU attack my equipment and my hearing with no knowledge of either.
"Yes, you're confused even more."
Again another attack about me being confused. In relation to what exactly?
" am talking about stepped attenuator with constant impedance, NOT a "resistive control" like a simple volume pot which you apparently mixed up with."
No confusion with that. I know what you are talking about and my statements stand.
"5) So tell me what "issues" you found with a stepped attenuator?"
They for the most part don't sound as good as a TVC when each is used in it's proper place with the correct technical implimentation.
"My question is: how much you know about a stepped attenuator so that you can use it properly with your amps."
I know enough to maximise the use of each for the situation relevant to controlling volume.
"How you match the O/P impedance of your driving component with the proper value chosen for resistance of the attenuator? Again, I am talking about attenuators, NOT volume pot."
I know how to do this thankyou
"Read this sonic report excerpt on Signature 30 of Redwine Audio, a
"Best of 2006" award winning power amp featuirng a stepped attenuator volume control:-"..These amps sport the microdynamic finesse, textural purity, treble elegance, beat fidelity & tactile suchness we expect from no-feedback direct-heated trodes...."
Surely the desinger Winne Rossi knows the best out of a resistive volume control. But do you ???"
You claim that for someone else yet you know nothing about me. Amazing! My work is online for all to see. Yet none of yours is despite many requests for you to do so. Your extracts from a review prove nothing - no context - no reference.
"(6) Yes, I & my panel sighted auditioned a few you-know-what brandname TVCs."
No I don't know what brandname TVCs coz you don't say so. Neither do you say how you used them.
"The general impression was they are commonly shy on the top frequency sparkle. Ironically, one member of my panel said
"my very first volume - 1 10-turn precision pot with a series resistor - was not bad at all."Is that your critique then?
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Follow Ups
- Re: Sorry, you're are indeed confused. (long) - Stephen R 12:23:08 01/17/07 (0)
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