Kind of a general question, but when I built my d'lite I sourced my own parts. I used either carbon comp or carbon film resistors, just the 5% type. If I want to build a better d' clone, should I go with different type of resistors? When I see pictures of some of the builds on the forum, and some of the real chassis shots, these look like high precision resistors.
Anyhow, what are your thoughts, and reasons??
Thanks, guys.
Mark.
What type of resistors to use?
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What type of resistors to use?
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Luthierwnc
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Re: What type of resistors to use?
Standard operating procedure is to use the Vishay-Dale RN65 metal films for the plates and the slope. I use a wire wound 3 watter on the rail to the PI node. The other power resistors are either a) 2 watt metal oxides or b) whatever's in the bin. I usually use the aluminum-housed power resistors for the Ford mod and cathode bias -- not so much because of their wattage but because you can mount them almost anywhere.
The rest are usually 1w carbon films but I'll use little metal films where space is tight (like the 10m bleeders on the PAB and the 270k's on the deep switch).
Skip
The rest are usually 1w carbon films but I'll use little metal films where space is tight (like the 10m bleeders on the PAB and the 270k's on the deep switch).
Skip
Re: What type of resistors to use?
The RN65 is a MF resistor - a mil-spec low noise, high precision MF resistor designed for use in audio circuits, to be exact. For whatever reason, though, it does sound better than many other MF resistors when used for plate loads in D-clones. They're what HAD used most of the time, and a lot of people consider them to be an integral part of the D-sound.
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phsyconoodler
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Re: What type of resistors to use?
I use carbon film there and I have not noticed a difference when using vishay dale resistors.
I think people get the idea that 1% resistors sound better than 20% ones.If they measure the same,how can it 'sound' different?
It may be urban myth or something exotic in the transfer of electrons.Or maybe an exclusive "do you want to be in the club" thing.
I think people get the idea that 1% resistors sound better than 20% ones.If they measure the same,how can it 'sound' different?
It may be urban myth or something exotic in the transfer of electrons.Or maybe an exclusive "do you want to be in the club" thing.
Crystal latice or vacuum,that is the question.
Re: What type of resistors to use?
Not in the slope, Skip, at least I have never seen an RN65 in that spot... Dumble seemed to favor carbon film ones for the slope in the "cherry" amps and otherr metal films in the amps from the 90s.Luthierwnc wrote:Standard operating procedure is to use the Vishay-Dale RN65 metal films for the plates and the slope.
Skip
Gil