jetrexpro

Responses from jetrexpro

Elrog 300B vs Takatsuki 300B tubes
Matthias also brings to the table an interesting observation about the current draw of 1.5 amps for the EML 300b XLS. It is 25% higher than a standard 300b which is 1.2amps. This is something I have mentioned in these pages to folks who were consi... 
Elrog 300B vs Takatsuki 300B tubes
...and if the franks are set up to run at 413v @ 87mA. Many would say that's running 300b tubes pretty hard. 
Elrog 300B vs Takatsuki 300B tubes
I did not expect to hear that the Franks are indeed running 400v on the plate. That puts them towards the upper range and not a conservative operating point. I would think that's the upper range of what the Elrogs can handle. No wonder the EML 300... 
Elrog 300B vs Takatsuki 300B tubes
If the power supply is outputting somewhere around 425V that would mean the 300b tube would see a more conservative 325 to 350v acoss the plate depending on the cathode resistor value. 
Elrog 300B vs Takatsuki 300B tubes
Charles I agree there is some confusion going on. A call to Israel will solve this. I would guess the Franks Power supply is outputting more or less 425v. And if it is somewhere around 425v no adjustments to the Cathode resistor would be needed. 
Elrog 300B vs Takatsuki 300B tubes
Charles you may want to call Israel Blume. I find that this operating point would be hard to believe. It would fry any mesh plate tube and push any standard 300b to its limits:"1kOhms cathode resistor we have 86.8V at the cathode at anode current ... 
Elrog 300B vs Takatsuki 300B tubes
The franks have a very high operating point!?- 525V operating voltage with some drop (25V) over the OPT- Makes 500V at the Anode- because the 1kOhms cathode resistor we have 86.8V at the cathode - results about 413V across the plate of the Elrog. ... 
Capacitor log Mundorf Silver in Oil
Thanks Justubes for the detailed response. I have printed this and will refer to it often. 
Capacitor log Mundorf Silver in Oil
Justubes2, Could you fill us in on your bypass cap values?Lets say you have a 22uf cap in your power supply, what values and brand would you choose as your bypass caps? Thanks jet 
Elrog 300B vs Takatsuki 300B tubes
Sorry to hear about the failures guys. 
DeVore Orangutan 96 an upgrade over DeVore 9?
Voxshall, If you are motivated to tap you foot and your body is swaying to the beat then the O/96 have a musical pacing, it not they don't. Sounds like you have been able to dial them in - congratulations and enjoy! Regards Jet 
Capacitor log Mundorf Silver in Oil
I should also mention that I have tried only the Wima Polypropylene caps in my power supply. Which leaves many that I have not tried like Clarity caps for instance. I know many many amps use Polypropylene caps so they must sound very good to many ... 
Capacitor log Mundorf Silver in Oil
Justubes2, I have black gates in several places in the audio circuit of my amp and these caps have a very free and open sound like the Audio Note Kaisei.I think the Audio Note team is very familiar with WKZ BlackGate and their goal is make the Kai... 
Capacitor log Mundorf Silver in Oil
I have some limited experience with bypass stacks and it was not favorable. As some of you know I have been trying different types of capacitors in my power supply for the past three months. For the blow by blow you can refer to my system page thr... 
Capacitor log Mundorf Silver in Oil
I think we are all exploring different ways to get the sound we want. I can see how the Duelund copper cast can leave some listeners wanting. There are so many variations speakers, room, cables, output tube, driver tube, power supply caps...and th...