I'm looking for somebody to test some tubes
muncybob
Posts: 3,051
in Electronics
I don't have a tester or even know how to operate one (but would be willing to learn). After striking out at a few local shops I've looked for a used tester but decided against that since I would not know if the unit functions properly.
So, would there be anyone interested in testing some tubes for me? Probably have 16 or so and am looking to try identify and match pairs as close as possible.
So, would there be anyone interested in testing some tubes for me? Probably have 16 or so and am looking to try identify and match pairs as close as possible.
Yep, my name really is Bob.
Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub.
Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub.
Comments
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I have a calibrated tester, you pay shipping to and from I'm willing.
I'm in Illinois. -
I don't have a tester or even know how to operate one (but would be willing to learn). After striking out at a few local shops I've looked for a used tester but decided against that since I would not know if the unit functions properly.
So, would there be anyone interested in testing some tubes for me? Probably have 16 or so and am looking to try identify and match pairs as close as possible.
I get it and somewhat agree with you doing so and pitdogg2 is willing to do it for you which is pretty cool. BUT my question to you is, what tubes do you have?? Where did you get them from? Have you tried Local Music amp repair shops? They all have tube testers as most guitar amps are tube amps. We have several around the PA Philadelphia and NJ areas.
And finally what does it cost to ship both ways vs buying new matched tubes for whatever you're changing tubes in?Dan
My personal quest is to save to world of bad audio, one thread at a time. -
And finally what does it cost to ship both ways vs buying new matched tubes for whatever you're changing tubes in?
Pennies on the dollar? Jeez, have you seen the price of tubes as of late?
Reliably sourced NOS tubes are a gold mine nowadays.
Tom
~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~ -
Unfortunately there are no shops in this area that I know of that can test for me...and have have tried several that I thought could help. One Mom&Pop TV shop said I should have called sooner as they just gave away 2 testers....dang!
The tubes are mostly 12AX7 and 6DJ8 types. pitdogg2...PM forthcoming.Yep, my name really is Bob.
Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub. -
With Ivan, you will have someone very knowledgeable about the tester and its results as well as the construction and characteristics of the tubes he’s testing. On top of that, no worries about his handling of any valuable tubes or potential return shipping/packaging issues.
Brian
One-owner Polk Audio RTA 15TL speakers refreshed w/ Sonicap, Vishay/Mills and Cardas components by "pitdogg2," "xschop" billet tweeter plates and BH5 | Stereo REL Acoustics T/5x subwoofers w/ Bassline Blue cables | Rogue Audio Cronus Magnum III integrated tube amp | Technics SL-1210G turntable w/ Ortofon 2M Black LVB 250 MM cart | Sony CDP-508ESD CD player (as a transport) | LampizatOr Baltic 4 tube DAC | Nordost & DH Labs cables/interconnects | APC H15 Power Conditioner | GIK Acoustics room treatments | Degritter RCM -
Finally found a shop not too far from us that will do the testing, BIG thanks to Ivan for the offer though.
Other than fleabay, where would I find boxes for 12AX7 size tubes?Yep, my name really is Bob.
Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub. -
No I haven't and is why I asked. It's been a few years since I purchased tubes. I got 4 Sovtech 6L6 tubes all matched for $74.99. I have no idea what they cost now but I'll have to start looking as one of my Guitar amps is ready for some fresh tubes.
I don't know what NOS tubes are.Dan
My personal quest is to save to world of bad audio, one thread at a time. -
Dan
My personal quest is to save to world of bad audio, one thread at a time. -
NOS = New Old Stock.I don't know what NOS tubes are.
What you are buying Dan is NOT considered NOS as they are still in production.
https://www.ebay.com/itm/146104964924?
https://www.ebay.com/itm/326293576007?
These are NOS tubes
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Not laughing at you but LOL.
That's why I said what I said. Tube prices have gone through the damned roof.
Tom~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~ -
Ukraine war blew the prices up on tubes… no pun intended2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC
erat interfectorem cesar et **** dictatorem dicere a -
I have a calibrated tester, you pay shipping to and from I'm willing.
I'm in Illinois.
Well, the shop may not have the equipment I thought they had for testing....offer still good? PM sent.Yep, my name really is Bob.
Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub. -
Yes.
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Roll them. That's the best way to test them. A tester doesn't tell you if they sound good but if you want output matches, by all means.Gustard X26 Pro DAC
Belles 21A Pre modded with Mundorf Supreme caps
B&K M200 Sonata monoblocks refreshed and upgraded
Polk SDA 1C's modded / 1000Va Dreadnaught
Wireworld Silver Eclipse IC's and speaker cables
Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)
There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus -
Roll them. That's the best way to test them. A tester doesn't tell you if they sound good but if you want output matches, by all means.
Tube matching is overrated, unless it's done in circuit at many different test points, even then there is no guarantee they will stay matched after some use. -
Matching is a starting point, testing may tell me which tubes to keep and which to trash?Yep, my name really is Bob.
Parasound HCA1500A(indoor sound) and HCA1000(outdoor sound), Dynaco PAS4, Denon DP1200 w/Shure V15 Type V and Jico SAS stylus, Marantz UD7007, Polk L600, Rythmik L12 sub. -
Roll them. That's the best way to test them. A tester doesn't tell you if they sound good but if you want output matches, by all means.
I sure would not want to "roll" in a tube with a short. I also would like to know that a paticular tube is nearing end of life. Also no sense in running tubes that are a tick or two above the minimum good value either. -
Roll them. That's the best way to test them. A tester doesn't tell you if they sound good but if you want output matches, by all means.
I sure would not want to "roll" in a tube with a short. I also would like to know that a paticular tube is nearing end of life. Also no sense in running tubes that are a tick or two above the minimum good value either.
Yes a tube with a short is a no go, but end of life tests on a tester are very subjective. A tube tester with end of life tests could just be a tube pin not making an adequate connection.
