Well I just bought a whole box of tubes in original boxes. Picked up from an old repair shop that closed down.
6 x GE 6SL7GT USA
6 X GE 12AV7 USA
3 X GE 6080 USA
1 X SYLVANIA 6080 USA
1 X K-R 6080 USA
1 X GE 6L6G (beautiful tube)
4 X RCA 12AU7/ECC82 USA
2 X RCA 5963 USA
2 X GE 6FQ7/6CG7 USA
2 X RCA 6X5GT USA
1 X GE 6X5GT USA
2 X GE 5Y3GT USA
He had a load more but it was all I wanted to spend for now.
Got them cheap (130 USD) as they were untested. But all were untouched in original boxes.
Going to have some fun with these!
Mind you my other half thought I needed my head examining!
What are your opinions on these tubes? Good deal?
6080's for an OTL
Just noticed he had Sylvania 6C4 x 3. Should I pick these up?
6 x GE 6SL7GT USA
6 X GE 12AV7 USA
3 X GE 6080 USA
1 X SYLVANIA 6080 USA
1 X K-R 6080 USA
1 X GE 6L6G (beautiful tube)
4 X RCA 12AU7/ECC82 USA
2 X RCA 5963 USA
2 X GE 6FQ7/6CG7 USA
2 X RCA 6X5GT USA
1 X GE 6X5GT USA
2 X GE 5Y3GT USA
He had a load more but it was all I wanted to spend for now.
Got them cheap (130 USD) as they were untested. But all were untouched in original boxes.
Going to have some fun with these!
Mind you my other half thought I needed my head examining!
What are your opinions on these tubes? Good deal?
6080's for an OTL
Just noticed he had Sylvania 6C4 x 3. Should I pick these up?
Wow! Nice find you have there!
The GE 6080 is the military version of the 6AS7G, there are BOATLOADS of those around thanks to US Military ordering procedures.
Pete Millet used the 6080 in a couple of his projects, the HA-1 and HA-2 headphone amps, the data is still available on his personal archive of the Wheatfield Audio website at http://www.pmillett.com/wheatfield.htm
For some reason, I see a lot of audiophiles thumb their nose at the 6L6 output tubes. I have never had a amp that was big enough to need those on the output stage, except for guitar amps. Which can hardly be called 'hi-fi'.
The 6SL7's should make some nice DIY project parts, though. I think the RCA 5963 is a long-life version of the 12AU7, supposedly has low microphonics.
A lot of fairly useful audio tubes on your list, for sure. Enjoy!
The GE 6080 is the military version of the 6AS7G, there are BOATLOADS of those around thanks to US Military ordering procedures.
Pete Millet used the 6080 in a couple of his projects, the HA-1 and HA-2 headphone amps, the data is still available on his personal archive of the Wheatfield Audio website at http://www.pmillett.com/wheatfield.htm
For some reason, I see a lot of audiophiles thumb their nose at the 6L6 output tubes. I have never had a amp that was big enough to need those on the output stage, except for guitar amps. Which can hardly be called 'hi-fi'.
The 6SL7's should make some nice DIY project parts, though. I think the RCA 5963 is a long-life version of the 12AU7, supposedly has low microphonics.
A lot of fairly useful audio tubes on your list, for sure. Enjoy!
As I only have one of these beauties I think I will build a SE amp for my guitar. should be fun.
I already have this 5963 running now in my CF buffer with one of the new rectifiers. Very nice indeed.
Tempted to buy more of these. He has another 12 or so and many others. Though I think my other half will leave me if I spend more money on tubes!!!
They just don't get it.
Can't wait to get started on these new projects.
Think I will start this one first
Thks for the tip.I see I can use one 6080 for both channels as it has 2 sections right?
As I have 5 tubes this is perfect as I want to keep 4 for an OTL project. I can use one of them for the headphone amp.
Looking at :
http://www.pmillett.com/tubedata/HB-3/Receiving-Type_Industrial_Tubes/6080.PDF
Shows 135 Volts for optimum usage with a plate current of max 125mA ! What would be the optimum current here? He's got 95mA on the design. (190/2000).
In the design he has 300 Volts on the plates no? (6080 has max of 250 volts!)
If I use the 2 sections this will draw almost 250 mA with both tubes?? That seems like quite a large amount which would melt my 6X5GT.
Is this correct?
Also the heater will draw 2.5 Amps?
http://www.pmillett.com/tubedata/HB-3/Receiving-Type_Industrial_Tubes/6080.PDF
Shows 135 Volts for optimum usage with a plate current of max 125mA ! What would be the optimum current here? He's got 95mA on the design. (190/2000).
In the design he has 300 Volts on the plates no? (6080 has max of 250 volts!)
If I use the 2 sections this will draw almost 250 mA with both tubes?? That seems like quite a large amount which would melt my 6X5GT.
Is this correct?
Also the heater will draw 2.5 Amps?
Yep I did overspec it for it's original use.
Maybe I'll get another one made with about 500mA.
But still have the problem of my rectifiers not being up to the job. I have 6X5GT/5Y3GT.
Probably have to make a SS bridge for now.
I have a seperate tranny for the heaters which can supply 4 Amps
Update: I also think I've got a 5U3 at home This may be better for the job.
Maybe I'll get another one made with about 500mA.
But still have the problem of my rectifiers not being up to the job. I have 6X5GT/5Y3GT.
Probably have to make a SS bridge for now.
I have a seperate tranny for the heaters which can supply 4 Amps
Update: I also think I've got a 5U3 at home
This may be better for the job.Buy twice as many as you can use and put the rest on eBay. I just bought a bunch of tubes also. My plan is to resell half the lot at 2X the price I paid. So I keep half the tubes for zero net cost to me.
You can get great deals on a box of assorted, untested tubes. But if you test it, photograph it and you are able to say "I put this in an amp and played it, sounds good" then the tube is worth 5X more.
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