Recent content by beate_r

As well as the KT77. And one of its subtle differences to the EL34 is (accordingly?) a slightly smaller G2 currents and a smaller G2 load limit (writing from memory), the latter probably a case of trouble under heavy load in a PA amp like the Eminent.

That's why i try out and check recent tubes in those vintage amps. There is too much speculation on that issue. That's why i did not throw those tubes away. The Eminent is just not attractive für experimenting because it is build so tight. The only option in this amp is to reduce the G1...

Yes, they are. Actually intended as drop in replacements. But sometimes bias requirements seem to be different.

Well, of course. But that means that You simply ignore the fact, that those amps are desings that have proven their reliability of more than half a century. And basic physics like P=U²/R using the large primary resistance of the output transformers (8k). And the engineers who designed those...

With larger voltages, the plate dissipation is actually reduced (P=U²/R). A pair of EL34 can be run safely at even 100W with a rail voltage of nearly 800V. Measured with a sine signal of 400 Hz over at least half an hour (according to the German measuring standard at that time). The critical...

That's a bass i built by myself.

Why? They run within their specs, at least if they are not overdriven. And yes, for safety i might (and should, even for the EL34) increase the G2 resistance because the G2 of the EL34 withstands larger G2 currents than those of the KT77. BTW: i own another Eminent2 and i had owned an...

Here my latest output: quite some years ago i restored a Dynacord Eminent 2 PA amp, built in 1966 or 1967. Made for 220V line voltage to deliver 80W from 2 EL34 at roughly 750V; at the current 230V it should deliver about 90W. At that ime i removed two of its input modules and modified the...

May i show You something i built by myself? Quite a while ago i did that little amp -12W from a pair of 6L6GC. Fully from scratch. AMZ tone stack plus adjustable low mid scoop at the freqency of a Hiwatt tone stack. Which means that like a Hiwatt it can be used for guitar and for bass, and it...

That's true for the Fender construction. but not necessarily for th the others. I would check different bass VI type intruments ...

I do. And i like it. But the instrument is "special": it is a converted shortscale bass. Using a Di Marzio Model P and a chinese Firebird guitar pickup and strung wth LaBella Flats for the Schecter Hellfire. A really decent and flexible instrument. Can be used for playing bass with a pick if...

BTW: is there any 6 string or Bass VI with a slotted or open headstock?

Yes of course i stull have it. It is my 3rd attempt on DIY and actually the first bass i ever built. It is pretyy well balaced, but it took me a lot of effort get it into balance - a semi hollow V is pretty special.

Here is the data shoeet of the power triode: https://frank.pocnet.net/sheets/113/6/6N6P.pdf (that site also hast the other data sheet). What do we see in the amp: a toroidal power transformer and a small but for the low power relatively large OT. Interesting concept. If done with current...

I just tried them. Medium Scale light. Disregarding the thinner thickness of the Warwicks, the nylon cover looks and feels identical to that of the Fender balck tapes (9150 or so). An now a quick review: The E string is dead. Really dead. I never saw such a dead string.... Initially it just...