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i just saw a manual on ebay for this, i have a 564 but not a "b" version

Yup, bingo. E55L/8233's have had quite a bit of interest in some of the audio circles, particularly the low power/single ended amp crowd. However, due to the extremely high Gm of this tube (45mA/V),

Steve Bringhurst wrote: I think you can find 8233's in the Antique Electronics catalog for around $50, still not cheap. As you have noticed, you can buy a used 3A6 or 3A1 for a LOT less than that

Hi, I've got a R564B rack mount storage CRO with a blown transistor in the power supply, not sure what other problems. I think the tube's OK. I have the schematic for a 564 low voltage and high

Sorry that my email reply meant for Andrew in Sydney went out to the group. I didn't check the reply address before I hit the send button (and I also didn't correct the subject title). It's kinda

Hello Andrew, Thank you for the reply from early May providing me with the TAS 465 service manual part number. I'm still trying to locate one (though it turns out my next door neighbor designed

--- Stan or Patricia Griffiths <w7ni@...> wrote:

--- Stan or Patricia Griffiths <w7ni@...> wrote:

Steve B. wrote:

something (sorry a true I do have quite a sense of humor, but on this topic it has been long exhausted elsewhere, thanx to the persistently reoccuring pointed derision therein of those who have

Hi Fernando, Check the power supplies in the D43. It sounds like something common to both the deflection circuits and beam voltages. It seems the horizontal circuits are working

Hi there, This might be a bit offtopic since I'm bringing Telequipment scopes to discussion. But then again Telequipment was bought by Tektronix in the late 60's I think, so I hope all is well

Interesting range of opinions thus far.. and *yes* there's a relationship to scopes in all of this, IMhO. At least re test equipment operation, there are physics-laws + state of the 'mensuration art'

Hello, I'd agree with both Stan and Dean. If you want to meet the specs spelled out in the manual, then you should go by the manual. But I and many others the ballpark estimate is good enough.

Hello, Perhaps a change in subject is would be good right now. I caught up on the topics because I recently signed up. Anyway did you check the horizontal plates for jitter ? Because I had a

"guitar amps sound different with different sets of tubes from different manufacturers. Damned if I know why, but they do. Sometimes radically different. I almost feel that I have a split personality

After looking at my 535A this a.m., you are correct. There are tube lineups just as you say in my scope AND CA plugin. However, I don't recall seeing many 6AK5, 6AU6, or 12AU7 tubes from the

Right on. Same for the Japanese paying mega bucks for the old Western Electric theatre amps. Audio is rife with "the emperor's new clothes" syndrome, and the brain plays a lot of tricks on

europachris@... wrote: I'm not really sure what you mean by "small signal positions" . . . do you mean the first stage of a sensitive amplifier? For letter series tube amplifiers, the first

It isn't human dynamic range or bandwidth that creates this demand for certain devices/brands Dean; it's a tone; a certain character of sound quality. There is no technical definition for this