Hi everyone,
I've just been joining this awesome Bottlehead Crack community for a very short time, since my first troubleshooting topic :
http://www.bottlehead.com/smf/index.php/topic,4451.msg41786.html#msg41786The problems back then was the bad stock 6080 and 12AU7 tubes. So I ordered a Tungsram E80CC on Ebay and the Tung-Sol 5998 power tube on Radio Electric Supply ( vacuumtubes.net ). And they finally arrived just a moment ago. The NOS E80CC is good, but what I pulled out from the big box is a Chatham 2399 instead of a Tung-Sol 5998 and there are some little broken glass inside the tube. There are 3 pieces of glass, 2 are very tiny and 1 is a little bigger.
I insterted it to my Speedballed Crack and let them warm up, then I plugged my HD650 and I heard some 'sound' coming from the right channel AT THE SAME TIME I was plugging the HD650 into my Crack. It's not noise or hiss, it's just a 'ting' sound. But when the HD650's jack is fully plugged, it's back to dead silent. I'll let them have some time to burn in and the sound is simply amazing. But this really confuses me
I have several questions:
- As far as I research, the Chatham 2399s are identical to the Tungsol 5998s, but I have read somewhere that there are some differences between them. Can anyone confirm if the 2399's and 5998's sound identical or not?
- Despite the fantastic sound, I'm really confused about the 3 little broken glass pieces inside my Chatham, can they do harm to my Crack and my HD650?
- There are some measurements on my Chatham's box:
Gm: 16.15 / 16.70 ( 104% )
Plate current: 95.7 / 112.6 ( 94% )
Brand: Chatham
Construction: Black plate - 2399
Are they good or bad? Sorry for this silly question, but I really have no idea about these concepts
- Lastly, what is the proper way to burn-in tubes? I just turn the Crack on and let the tubes 'burn', or do I have to play the music and plug a headphone into my Crack?
Thanks in advance! I'm totally a newbie here. Forgive me if there is any mistake. My English is not so good