| tube sources needed [message #8483] |
Thu, 30 September 2004 15:22  |
jim denton
Messages: 162
Registered: May 2009
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Master |
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Hurting for a good source for 7189A tubes ----No! Not the ones for $49.95 each either! I really like my Sansui 500Areceiver but---the tubes are a killin' Me! It's a major socket re-wire to go to 7189s----anybody gotta source?? Jim
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| Re: tube sources needed [message #8484 is a reply to message #8483] |
Thu, 30 September 2004 22:50  |
metasonix
Messages: 103
Registered: May 2009
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Viscount |
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Sorry--real 7189As are extremely scarce, and getting more so every day. And you should be very leery of fakes. It's easy to print "7189A" onto a cheap modern EL84, and hard to prove it isn't real. Several Hong Kong dealers are doing this, and their "handiwork" is starting to pop up on the websites of American tube dealers. (I'd tell you who, but he'd just sue me.) Suggest getting VTV issue 8, at least you'll have good clean photos of the real thing for comparison. Email me and I'll tell you which dealers to AVOID...
synth@metasonix.com
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| Re: KT-88 amp in VTV [message #8488 is a reply to message #8487] |
Fri, 01 October 2004 10:07 |
GarMan
Messages: 960
Registered: May 2009
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Illuminati (2nd Degree) |
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You know, I never understood the full benefit of the monoblock configuration of separating the chassis by channel. For me, it makes more sense to have a Power Supply chassis and Gain chassis, as opposed to right/left blocks. Gar.
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| Re: KT-88 amp in VTV [message #8495 is a reply to message #8486] |
Fri, 01 October 2004 22:18 |
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Wayne Parham
Messages: 18791
Registered: January 2001
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Illuminati (33rd Degree) |
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Thanks, I have that issue. It's on page 26 - the Eckland article about the Williamson circuit. I guess I had forgotten this article as I read the magazine about 6 months ago. This might have been the first issue I ever read; I don't know, but it's an impressive magazine with that article showing the full layout, schematics and the whole nine yards.  Vacuum Tube Valley, Issue 19
That issue also has an article by Kittleson with an equally in-depth write-up of the Craftsmen C500 amp with layouts and schematics and everything. There's a good comparison of several tube types too, which I thought was an interesting read. And then, of course, the Maven Peal ad. Gotta love it! Thanks for reminding me to look this up. That issue is a "must have" magazine for sure. I think maybe I'll have to build one of those amps too.
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| Re: KT-88 amp in VTV [message #8500 is a reply to message #8488] |
Sat, 02 October 2004 14:26 |
Russellc
Messages: 397
Registered: May 2009
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Illuminati (1st Degree) |
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I agree. The Kt88 amp I built uses that setup, i.e., separate power supply. Keeps all the dc stuff off the gain chassis. (assuming you rectify the power tubes heater voltages) However, the idea of an umbilcal after the power supply bothered me, so I took the advice of my local Mcintosh repairman/friend who installed the last cap bank after the coil IN THE GAIN CHASSIS, where it is nice and close to the output transformer. It passes beautiful bass signals on the scope with surprisingly low distortion for a tube amp. It does have a large power supply, with 8 1500 mfd 450 volt photo flash caps and 10 mhy 300 ma coils. I want that VTV amp bad, bought that back issue, but crikey, the cost of the plitron iron is VERY high! Russellc
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| you guys seem to be treading quite close to this one... [message #8627 is a reply to message #8495] |
Sun, 19 December 2004 09:52 |
PakProtector
Messages: 935
Registered: May 2009
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Illuminati (2nd Degree) |
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from the rules page:
Cooperative alliances whereby one party posts about another so that product announcement rules can be circumvented are prohibited. If we see these kinds of relationships develop, we will consider the parties to represent one another, whether a financial relationship exists or not. In other words, if you consistently support a particular person or company, we will view you as a representative of that person or organization even if you're not currently on their payroll.Soooo, what sort of cooperation is behind this?
regards,
Douglas
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