Help for Tango 300b amp

[timothygurney]

Hi,

Could any body be kind enough to indicate a good schematic for a 300b amplifier using the following "Iron":

All Tango (older versions)

Output : XE-20-S
Interstage : Trans NC-15
Choke : MC-10-2000

Many thanks
Tim

[45]

Originally Posted by timothygurney

Hi,

Could any body be kind enough to indicate a good schematic for a 300b amplifier using the following "Iron":

All Tango (older versions)

Output : XE-20-S
Interstage : Trans NC-15
Choke : MC-10-2000

Many thanks
Tim

Input: 6H30 (RC coupling)
Driver: 10Y + NC-15
Output: 300B + XE-20-S

The 10Y needs 385V approx. (350V anode voltage, 27V self bias + some drop due to the IT)
The 300B can be run at 350-360V/60mA (74-75V bias) 3.5K (Pout = 7.5W) or 5K (Pout = 6.5W with lower distortion).

You run all the tubes with self bias and will need just one supply voltage of 450V using the choke MC-10 (I assume it is 200 mA).


Cheers,
45