I concur with the Siemens 7308 suggestion, and would also add Amperex 7308 PQ made in the USA. Ever-so-slightly softer mids than the Siemens, and a good choice when running a SS amp with the First Sound. |
Artg are you referring to Amperex 6922 Pinch Waists? I've been using Amperex 6922 PQ White Label USA...but halo getter...not Pinch Waists. I love these tubes in the First Sound. If the Pinch Waists are 200% better ('cuz that's how much more they cost), then I'm eager to hear some.
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I concur with Artg's recommendation of Andy at Vintage Tube Services. |
Yes, it inverts absolute phase. This is different than the out-of-phase
most of us are familiar with in which the imaging out of whack. I
pesonally can't hear the difference with a unit out of absolute phase and
in absolute phase, but I don't really know what to listen for either. Artg,
can you hear the difference? |
No question that FS owners should swap speaker leads according to Emmanuel's suggestion. There is no argument from me on that issue. I'm just really interested to know what to listen for regarding absolute phase. Alex Peychev has an absolute phase switch on his APL Denon3910 that is remote switchable, too. I've switched that thing back and forth a dozen or more times. Sometimes I think I hear a slightly more expansive soundstage. Other times I'm not sure. It's more of a brain teaser for me at this juncture. |
Artg, have you been enjoying a cocktail this evening? Some of your words are kinda like code... :)
Enjoy the new tubes! |
Artg...only 'cuz I've been there, done that! |
Art, are you talking about "D" getter, steel pin Bugle Boys? |
Paul, it could be that Emmanuel created the shipment at his facility by entering the billing info (weight, address, etc), and didn't actually give the preamp to UPS until 6 days later. This would cause the shipment to be rescheduled and thus delayed six days. I am personally familiar with this scenario though not specifically with Emmanuel. |
Drubin, I went to the New Sensor website to order a pair of 0A2 tubes
only to find they have a minimum order of $75? Is this your experience
with New Sensor? |
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Artg has it right. Swap the two left channel tubes and the two right channel tubes. If the distortion moves to the left channel, you know it's one of the tubes. To determine whether it's the OA2 or 6922 tube, swap them with their partner one at a time.
If it's not a tube, call Emmanuel.
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Paul, how many EH tubes are you going to try before you realize that NOS are the way to go, my friend? Even if you get a pair of EH 6922 that work well in the FS, can you ever be secure in the notion that the next pair are going to work?
I can't remember from your posts on other threads what NOS tubes you've tried. I'd like to suggest starting with Amperex 6DJ8 Orange Globe tubes...around $100 (or less)...contact Brent Jesse for availability. Joe's Tube Lore is of the opinion these are next best to the vaunted Amperex 6922 PQ Pinch Waists. Others may disagree. I'm just passing info here. If you want to skip the buy-and-try process, buy some Amperex 6922 PQ white label tubes made in the USA. You should expect to pay around $150/pair. More than that is too much. They can be found for less if you're patient and watch E-Bay.
That's all my secrets...for the world to see.
Stop wasting your time riding the EH train. |
As two of my dear friends have told me independently of one another, "Buy cheap, buy again".
This has proven true in my life more times than I can recall.
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