jneutron.
2-5W resistors are commonly available from major parts jobbers. For a typical value of 20k and a 50V maximum, 2W hits my rule with margin to spare.
Doesn't take a genius, it's taught at university.
Do it with random pickings a number of times, and one is able to calculate the spread.
( http://www.diyaudio.com/forums/parts/64538-resistor-sound-quality-6.html#post3398760 )
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Was about to start writing, fully agreeing of course, when I saw:
answer with which I also FULLY agree
Funny thing is that I am reading this while enjoying a cup of coffee during a pause right in the middle of actually making speakers
I mean speakers-speakers , not speaker-cabinets.
But I'm now getting very worried: some of the frames are painted light blue (Customer's requirement), others are silver zinc plated, my regular finish.
Foolishly I thought that using all voice coils from the same box, cones and spiders from the same batch would make them sound reasonably close, but here in this great Forum I have just learnt that part
C.O.L.O.U.R. is paramount, and nothing else matters.Funny thing, in fact *all* sound AND measure different, .... but difference does not seem to be related to colour
...... should I 
myself?Maybe Penitence makes me see/hear what my stubborn sinner brain does not want to.
Some torture might make me agree with Winston, from George Orwell's "1984" fame:
perhaps I should insist on challenging some widespread and very popular Myths after all, because:
and
mmmmhhhhhh, please wait a second, somebody knocked the door ... hard ..... as if with a sledge hammer ......... and I hear a chopper flying low and ..... boots running on my roof ..............
....
....
....
....
hey !!!!! , this is a friendly discussion !!!!!!! which of you subjectivists denounced me to the Thought Police?
The resistors we used for the CTC Blowtorch were the Resista, Holco, and Caddock depending on the power rating needed. I would still use them today, if possible. BUT Dale makes some pretty good resistors these days and Ed Simon pointed them out to me awhile ago. We use them for commercial designs.
SY got it wrong. We did not 'voice' each preamp for each customer. We only made different numbers of inputs and outputs, or balanced or unbalanced for each customer.
I would not know how to 'voice' a preamp, but we did add on a few very high value Vishay bulk metal resistors with the TKD pots, which Bob Crump thought made them sound more neutral, or better. He was the 'golden ear' when he was alive. I miss him, because I don't have his sensitivity to subtlety to sound character that he had.
SY got it wrong. We did not 'voice' each preamp for each customer. We only made different numbers of inputs and outputs, or balanced or unbalanced for each customer.
I would not know how to 'voice' a preamp, but we did add on a few very high value Vishay bulk metal resistors with the TKD pots, which Bob Crump thought made them sound more neutral, or better. He was the 'golden ear' when he was alive. I miss him, because I don't have his sensitivity to subtlety to sound character that he had.
References:
REVIEW: CTC Blowtorch preamp Preamplifier (SS) - Brian Cheney - General Asylum
www.remusic.it/The-Blowtorch-Preamp-95f1a700?MasterId=g1_547
You can see how this could be read two ways...
REVIEW: CTC Blowtorch preamp Preamplifier (SS) - Brian Cheney - General Asylum
www.remusic.it/The-Blowtorch-Preamp-95f1a700?MasterId=g1_547
You can see how this could be read two ways...
Hi,
Thanks for your reply.
I agree in general about Rs having a sound of their own. A sonic fingerprint I like to call it.
Most passives do, all it takes is using enough of the same for it to become audible really.
You can often even recognize brand "sound" as some manufacturers keep using the same passive components throughout their range of products.
I do think you owe it to yourself to try out a bulk foil loading R in that particular position (100R for Koetsu IIRC).
To my ears that's one of the rare ones that do not have a sound of their own.
Cheers,
Thanks for your reply.
I agree in general about Rs having a sound of their own. A sonic fingerprint I like to call it.
Most passives do, all it takes is using enough of the same for it to become audible really.
You can often even recognize brand "sound" as some manufacturers keep using the same passive components throughout their range of products.
I do think you owe it to yourself to try out a bulk foil loading R in that particular position (100R for Koetsu IIRC).
To my ears that's one of the rare ones that do not have a sound of their own.
Cheers,
This thread is a trap!
The sincerity of Sy and attempt to help Nicoch is admirable and touching (really it is.) The expertise of all is impressive, but the sighted listening/blind testing religion stuff gets old. We all here things differently (Engineer/audiphile friend does not like clipping), but can't hear very obvious changes (or won't hear.)
Arnyk's above hits the nail on the point exactly. "The chain is only as strong as its weakest link" or "the bigger you are the harder you fall", and this does apply to audio and making a system (of parts if you are designing/modding). If one had the ultimate "boutique" single ended system with every boutique part lovingly selected (with correct enginneering behind it), what would happen if you replaced one part (resistor)? How far would the system fall with a measurable defective or wrong part (inductive wirewound resistor) in the most critical position? What would happen if a non-boutique, measurably identical, part was put in its place? By engineering standards, one should hear nothing, but I'd be very surprised if this was the case.
These small changes can add up. If one goes into a CD player and replaces a couple random resistors with bulk foil types, doubt that does anything. However, a well "tweaked" system can get better and better from seemingly small changes especially if the change corrects something that was in the "harder you fall" category. (For me this was replacing Loesch preamp 20k passive Daven "noninductive" steped pot with a Placette bulk foil 9k passive).
Solid engineering is invaluable and critical and this thread could be so much more if we could identify where resistor quality might really matter and then let bygones be bygones and allow the cork sniffing boutique set to waste some money and report back results without pages of trolling.
Wish I had easy cartridge loading setup and I'd get a bulk foil and then try to hand measure a nice metal film resistor at local parts store to match to a close value. Sy says this makes no difference and it would be a great test.
Until we all agree to get along and work towards something useful, this thread from 60,000 feet is just a smorgasborg of trolling on the sound of resistors.
http://giphy.com/gifs/community-ew-ewcom-GzCSoeteTBzry
It's a trap!
After watching this thread for years it finally explodes on Turkey day. How appropriate!
The sincerity of Sy and attempt to help Nicoch is admirable and touching (really it is.) The expertise of all is impressive, but the sighted listening/blind testing religion stuff gets old. We all here things differently (Engineer/audiphile friend does not like clipping), but can't hear very obvious changes (or won't hear.)
Arnyk's above hits the nail on the point exactly. "The chain is only as strong as its weakest link" or "the bigger you are the harder you fall", and this does apply to audio and making a system (of parts if you are designing/modding). If one had the ultimate "boutique" single ended system with every boutique part lovingly selected (with correct enginneering behind it), what would happen if you replaced one part (resistor)? How far would the system fall with a measurable defective or wrong part (inductive wirewound resistor) in the most critical position? What would happen if a non-boutique, measurably identical, part was put in its place? By engineering standards, one should hear nothing, but I'd be very surprised if this was the case.
These small changes can add up. If one goes into a CD player and replaces a couple random resistors with bulk foil types, doubt that does anything. However, a well "tweaked" system can get better and better from seemingly small changes especially if the change corrects something that was in the "harder you fall" category. (For me this was replacing Loesch preamp 20k passive Daven "noninductive" steped pot with a Placette bulk foil 9k passive).
Solid engineering is invaluable and critical and this thread could be so much more if we could identify where resistor quality might really matter and then let bygones be bygones and allow the cork sniffing boutique set to waste some money and report back results without pages of trolling.
Wish I had easy cartridge loading setup and I'd get a bulk foil and then try to hand measure a nice metal film resistor at local parts store to match to a close value. Sy says this makes no difference and it would be a great test.
Until we all agree to get along and work towards something useful, this thread from 60,000 feet is just a smorgasborg of trolling on the sound of resistors.
http://giphy.com/gifs/community-ew-ewcom-GzCSoeteTBzry
It's a trap!
An externally hosted image should be here but it was not working when we last tested it.
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