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65.92.230.222
if Russian vacuum tubes are unavailable?
ARC is cornered, more to the point ARC has cornered itself.
Does anyone know if Russian tubes can somehow be sourced in numbers sufficient to get ARC back on its feet?
Me thinks smart money will shy away from a hole in which money can easily be engulfed all to no avail.
Any comments aside from random blather?
Thanks for any serious input.
Follow Ups:
I can understand a manufacturer using KT 120s or 150s because of higher dissapation and plate voltage ratings, but in terms of linearity (plate curves), they are not as good as a KT 88, 6550 or EL 34. Ruggedness, yes. Sonic quality, no.
I've posted many times that the Russian Tung Sol KT120s are a crappy sounding tube in my Rogue amp even though that is the stock tube Rogue is using these days.
I agree manufacturers were using them because they are reliable and provide slightly higher power ratings. Definitely not because of sonics.
I've posted many times that the Russian Tung Sol KT120s are a crappy sounding tube in my Rogue amp even though that is the stock tube Rogue is using these days.
I agree manufacturers were using them because they are reliable and provide slightly higher power ratings. Definitely not because of sonics.
I've been told that too by a manufacturer who uses them probably because most tube people have been led to believe they are better especially due to higher power output. But in the best amps linearity comes first. And that's where a good push/pull triode amp shines.
Ken Stevens of CAT is awfully partial to the 120 running in triode. He has no love at all for the 150 in any mode however.Fortunately for me, I don't have a dog in this tube fight. My Acoustat amps use 6GE5, a lowly TV sweep tube. I have a lifetime supply socked away.
Edits: 05/14/23
Funny, I have two power amps that really shine with KT-150's. I mean really move up a few notches using them. I am sure there are technical reason for that but I have socked in a stash of KT-150's for that reason.
f1jim
Edits: 05/16/23
for KT-120s,150s,170s, and that has or is about to vanish.
That said, there are a few different sources for KT-88s. Manufacturers may just have to go back to them.
Jack
I'd be dumbfounded if JJ isn't looking at replicating those power tubes too.Something about nature abhorring a vacuum. If there's enough demand, it will get filled.
Edits: 05/13/23
they may have matched tubes in stock from Groove Tubes. For whatever reason I cannot find a website for Groovetubes but they test and rate all types for sale to guitar players as their market is larger than hi-fi.
Groove Tubes is now owned by Fender Musical Instruments.
You can only buy them through authorized Fender retailers.
I was a Groove Tubes dealer before the buyout. Back then, they tested and matched their tubes toa high level of precision. Don't know if that's still the case or not.
Always wondered how Groove Tubes and their various "guitar sound" designations like medium or green worked out in home audio equipment. Did you ever get a chance to try the different kinds?
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
Yes. Originally, they came in a 1-10 scale which was based on current draw. The 10's were the cleanest, and required the most negative grid voltage. The 1's drew more current with a given amount of grid bias. They had less clean headroom before breaking up.
Later, they changed to three ranges, low mid and high.
The higher numbered ones worked better for hi-fi equipment.
I didn't use many of their power tubes. I bought large quantities of Sovtek and matched them myself.
I did like their GT preamp tubes, though. Supposedly they listened to each tube and rejected a good percentage of them because of noise or microphonics. They were guaranteed low noise.
It's a bunch of hype mostly and how to get the obsessive sound they desire, I have many from years ago because they've been tested and used to be guaranteed (matched and whatever sound hype). They have a 'grading system' to distinguish the different levels of bias levels for musicians who don't know what they are doing tech-wise.
Something wrong with the amp? Plug in a new set because people are waiting for us to play ...They used to also do 'Special Requirements' like Fender use to do for rugged service. Most working musicians require reliability from their amps for playing out whether it's a local gig or a stadium. They slam their equipment around and don't care. The roadies know better.
It was a way to get plug and play for most non-tech types. They are the SAME TUBES if you can find them.
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