UntilThen
Headphoneus Supremus
- Joined
- Jun 16, 2015
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Hint: This dragon breaths a ball of fire every 15 minutes from 10 - 7.
Where is this fire breathing dragon.
Hint: This dragon breaths a ball of fire every 15 minutes from 10 - 7.
Put my Ember amp up for sale, now that Elise is shipping. Sitting here in the hospital, wife is having an EGD again. This week so far we have been with the medical field for over 10 hours. Should another 3 hours for today. I need a stiff dŕink, no vodka or scotch available here.
Wife is doing okay, they decided she was too high a risk for surgery, so after all that time in prep, talked with all involved and it was decided to cancel. She feels relieved as they were not sure she would come out of the anestesia ( we need a spell checker or younger people here!) think I murdered that one. Have heard from several of the members here in PM's and I want to thank all in public for their kind words and for caring. Told the wife about it, and she thinks it is wonderful to have such people in my life, as do I. She thinks this is more than a hobby or pastime. So seeing an opening, I asked about the McIntosh and she laughed and said if I really wanted it to go ahead and get it, but make sure to get an extension cable so I can use it out in the shed, where I will be living if I do. I tried!
Something to relax you
The Visseaux, Fivre and Mazda 6N7G are very old tubes just like the 1942 Philips Miniwatts FDD20 that I have. Mine did have some crackles and pops initially. It's like an old dinosaur coming alive. I have no hum and distortions though. Once fully burned in and in combination with Tung Sol 5998 or 6AS7G, they are dynamite.
Seriously, several of my old tubes seemed to need time to wake up, and protested in the beginning by making noises - crackling, ticks, and pops. Sometimes the pins needed a little scrubbing as well, but all of them behaved after a while.
Hint: This dragon breaths a ball of fire every 15 minutes from 10 - 7.
I know all about noises, crackling, pops and ticks from dozens of tubes bought for this and previous headphone amps and my hybrid speaker amplifier. With 6N7G and Elise, it's something different that plagues the output. It's heavy distortion that kicks in when turning up the volume at anything above 'low'. Like what you would get trying to get a wall of sound from your smartphone. I think the origin of this distortion must be more complex, and here is why. When combined with EL3N as powers, none of these tubes (I have 10 6N7g's/6A6 in total...) ever showed this distortion, even right from the NOS/NIB box. Still, you are both right it could be a burn-in effect of the tubes themselves. Maybe some electrical parameters need to 'settle' - and as long as that is not the case, the combination with regular powers doesn't work because of a mismatch. It's already a miracle that so many combo's DO work so well in Elise. I'm not an expert, but it's unlikely that they all just happen to operate at or near the optimal working points (of voltages, of bias, etc) with the fixed values that Elise provides. Maybe the 6N7G is 'just off' initially and shifts into the 'this works well' region when properly burned in. Or it's some burn in of parts in Elise that do the same thing. In that case, all 6N7G combo's should work now - will try. (Sorry, long again. You all know small kids have this 'but why' phase they go through. I never got passed that phase)
* UPDATE * Put in Fivre 6N7GT - these had very little play time so far - and they distort. So you are right guys - it's the 6N7G tube itself that needs the burn in. Come to think of it - I used the Visseaux's with EL3N for a while because that did work without distortion from the start. Those hours with EL3N of course helped the burn in of the Visseaux! So it makes sense it 'suddenly' works with 5998 too. The whole experiments to me is proof that tube burn in is VERY real. Not just to cure pops etc, but also to bring a tube 'on spec'. There are many disbelievers of burn in with respect to sound quality, including that of tubes. Guess with a tube run at it's optimal operating points, it's hard to discern a burn in effect but with these Visseaux in Elise, it seems very easy.
Whatever, I'm relieved the joybringers now work. I truly feel like a lucky oneI recognize the forward character but it's funky and makes the non-audiophile stuff sound like magic. Next to try: FDD20! Hope to make the adapters today.
Thanks to all of you pioneers who brought all these nice tube to our attention.