Very intriguing posts here!! Coupla questions:
Abe:
Also, you might want to try a different rectifier than what you are currently using on the Cornet 2 if you have 5Y3's. With a 5AR4, the B+ will be higher and could bring out the "airiness" you are looking for.
I'm using a 5Y3 and would like to try a 5AR4. Recommendations?
Hello,
Here's for you:
5AR4, I=1.9A,Vd=17 V at 225mA
5Y3, I =2.0, Vd= 60V at125 mA
5U4, I=3.0, Vd=44V at 225mA
5V4, I=2.0, Vd=25V at 175 mA
The filament current for the 6.3VAC heater of the 370 BX transformer is rated at 2.0 Amps.
As you can see, using a 5Y3, the tube drops around 60 but only 17 when using a 5AR4. This is why the B+ will be higher. You can also see that we can use a 5V4 rectifier tube instead since it has a lower voltage drop than the 5Y3 also and because the filament current is within specs to that of the transformer rating. The 5U4, we cannot use because it draws higher current than the winding at 3 amps regardless of the voltage drop.
For a 5AR4, there is nothing better for me than an authentic Mullard. I have them all (metal base, fat base, old logo, new logo, etc.)
Pat:
What the heck did you do to that Denon 103??
I am guilty as charge as well!



regards,
abe