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In Reply to: RE: Ladder stepped attenuator downsides please posted by beto1 on August 13, 2015 at 17:56:34
Look at the GoldPoint materials. They may shed some light on your problem.
Also, I'd only compare LIKE to LIKE with the difference only being series VS ladder construction. All other parameters, like contact type and resistor type should be the SAME.
Too much is never enough
Follow Ups:
hi pictureguy,
thanks for your answer.
that was the first place that I have looked, but I'm not sure if they stopped the ladder production because of the cost of doing a good one and the problems to sell at a higher cost or only because the better sound is only marginal (not noticiable). There are others that still think that is the best option, like here: http://diyaudio.co.kr/wwwboard1/data/board1/compare.pdf
I don't want guide my decision on vendors comments,so that's why I am asking for comments of mates that have experienced both kinds.
regards
Edits: 08/13/15
High End Audio is one of those places in which Zero-> Imaginary improvement is still a Cost-No-Object proposition. So No, if somebody STOPPED making a 'Ladder Type' attenuator, it is probably NOT for the reason you cite. Maybe it was just too complex and less reliable? Though this IS just a switch, when all is said and done.
ME? Just conceptually, I'll go with Series and not get wrapped around the Axle. Less complexity. Fewer resistors. Constant impedance to the source. Using a good MAKE before BREAK switch with Premium parts, what's NOT to like?
What got me investigating this was my urge to REMOVE the input attenuator pots on my Amplifiers. They are Parasound A23. Replacing them with attenuators, will Definitely be a Step Up. At about 200$ per amp? (Knobs EXTRA!) It BETTER be a help!
Too much is never enough
Why not just measure the pots and replace them with fixed resistors?
-reub
hello reuben,
can you elaborate a little more, please?
regrds
Adjust the pots to your favorite setting, remove them and measure the resistance from the wiper to both ends, and use the nearest value fixed resistors instead of the pot.
-reub
That would remove flexibility BUT even the Best 0.5% resistors possible won't be NEAR the cost of a rotary switch. And this approach was ALSO suggested by Parasound!
Too much is never enough
hi pictureguy,
well that is what I'm looking for. Is common sense to think that more parts, more moving parts, add more probabilities to fail in the long term. Also, what I'm trying to determine the relation as the cost involved in doubling the decks and resistors is not proportional to the improvement in sound. How much improvement was the matter.
Regards
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