I gathered some accessories and started the building process of my LA2A,I have a friend's original LA-2A from the 60's which might save me some time.
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Thank you, I will try it, When I use these carbon core resistors, I also want to get as close to the original electrical performance as possible, I think the special tone of LA2A may be produced by these old-fashioned resistors,I selected a large number of carbon core resistors, and they The accuracy of most is not good, but they are very cheap and cost me a lot of time to get the accuracy to within 3%.Curious to see how it turns out. Maybe consider using metal film resistors in some specific places ? Plate resistors for instance ?
Thank you, I will try it, When I use these carbon core resistors, I also want to get as close to the original electrical performance as possible, I think the special tone of LA2A may be produced by these old-fashioned resistors,I selected a large number of carbon core resistors, and they The accuracy of most is not good, but they are very cheap and cost me a lot of time to get the accuracy to within 3%.
@ZHOUJUNlarge number of carbon core resistors, and they The accuracy of most is not good, but they are very cheap and cost me a lot of time to get the accuracy to within 3%.
Not to mention that, due to their construction (graphite mixture, etc.), they are definitely noisier over time compared to modern film resistors.I think the lore that carbon comp resistors sound gnarlier is mostly BS (and the part that isn't is mostly due to bad things), what they are is less reliable, with wider tolerance as noted, and bigger. They are also more susceptible to heat damage (important in a tube device) and can drift in value significantly over time. They also cost double, sometimes triple what 1% metal films do. The only really good reason to use them is when you need something with better pulse endurance (not the case here) or when they are dual purpose as a fuse (like the screen resistors on the 6550s in Sunn amps - but even then I replaced those, which died from overheating BTW, with metal oxide - just don't up the wattage like some folks recomend online because it's better for the resistor to fail than to blow the tube - NOS 6550s be expensive).
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