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Does anyone know the estimated hour life of the DRs?
Twodown,IMO the killer combo is:LS 36.5 * metal base 5AR4/GZ34 + DR'sTP * HW GZ37 + (pick a pair.....clear tops, Raytheon black plates, another pair of DR's, a pair of 6N1P's or a pair of vintage 6N6P's).The other thing I'd try is moving the metal base to the TP and using a Tung Sol 5U4GB in the pre.
That's the beauty (and sometimes frustration) of tube rolling. The synergy comes together (redundant?) with the most unexpected bedfellows sometimes. The influence of impedance, power, tone (speakers), cable flavors, all make for a set of variables that are often-times overlooked. I guess it's why we have a thread with hundreds of ideas here, and there are few if any "standards" or empirical truths. I woudl NEVER have thought my DR's would marry up with a GZ32 in the TP, given the previous experience with both individually, but tonight's listening session was as good is it gets.
With the stand alone TP the consensus is GZ32/DR combo - you guys with the 36.5 have even more variables to deal with!Question - is it worth trying the GZ37 or calling it quits?Hi - I've been traveling and off the board for a bit. Is the GZ32/DR really the new consensus? What happened to the consensus on the GZ34? I got the NOS fat black base from the 50's and it wasn't that cheap. And dammit, I want to feel good about it!!! aaSeriously, I'm curious what the feeling is on that comparison if someone's done it directly...
Michael, I compared the metal base 5AR4 to my Mullard fat base in my 36.5 and actually preferred the fat base. I then compared the metal base to the HW GZ37 in my TP and went with the GZ37. This was while I owned Dali's, and since you own Dali's you may have a similar experience??
It is way to quiet around here lately, we need to buy some tubes I am wondering if anyone here knows about the 5931 tube? It is a rare military type rectifier tube, equivalent to the 5U4GB. It is supposed to be similar to the Tung Sol 5U4GB but punchier with more dynaimcs and resolution. They seem to go for about $60. I very well might try one, but thought I would also check and see if anyone here has some experience with this tube?
Tube updates (for my Modwright Plat. Truth Sony 9100 and LS 36.5):Finally got and tried a Tung Sol 5U4G (thanks to Jerrym). Very nice and a great value. More forward and dynamic, with sharper leading edge transients, than any of the other tubes I've tried. Less ease and depth, less holographic, than the others, especially, of course, the HW GZ37. Most interestingly, it seems to me most like the Mullard/Philips GZ32 of the 5V4 family. They share a tighter (pronounced leading edge transients), more focused sound. The GZ32, while less forward and dynamic, is more refined, and still without peer in its three dimensional portrayal of individual images, particularly voices, which can be eerily real.Overall, I still most prefer the HW GZ37 in the CDP (though it is fun to switch in the GZ32 or 5U4G, depending on source material) and a 5AR4 in the linestage. Mostly using a metal base Bugle Boy 5AR4 but at times I've found a smooth plate '70s Japanese Mullard very enjoyable. The latter has a fuller, richer bass and lower mid-range; if less air, delicacy, ambient detail and depth than the Amperex. The Japanese pieces are a great bargain, however, at the going rate of around $60. NOS.FWIW, if anyone here is interested, I'll be putting one of my extra NOS HW GZ37s (black base, grey plates) up for sale at the price I paid for it at the end of last year ($30-75. less than the dealers are asking now). First dibs to Jerrym.Rob
I have been playing around a bit more the last night or two. I have tried my HW GZ37, Tung Sol 5U4GB, and a military brown base GZ32 (CV593). The Tung Sol is fun for its dynamics but I just lose to much top end detail for my liking. The GZ32 AND GZ37 is a bit trickier. Nothing compares to the bass of the GZ37, it almost sounds like the difference between having a sub on and off in my system. It can almost border on too much bass but when it is on, boy is it sweet The GZ37 can at times sound a bit too dark for my liking. I think I may need to find a nicer GZ32 (possibly a metal base) and then see what I think.
for those who have inquired about the HW GZ37 I'm selling, I'm still waiting to hear back from Jerrym who's been at RMAF. If he doesn't want it I'll go down the list of PMs in the order received.
Quote from: rpf on 15 Oct 2008, 07:16 pmfor those who have inquired about the HW GZ37 I'm selling, I'm still waiting to hear back from Jerrym who's been at RMAF. If he doesn't want it I'll go down the list of PMs in the order received.Still interested, if nobody else has snapped it up yet. what's the HW part ? Is it a code from Phillips, or Mullard or something? Very few mentions of this tube through Google (most of them right here).
