Philco 37-611 Restoration

[MAGICBRAIN]

You could also drop the some of excess voltage by substituting 35 volt versions of the 25 volt tubes & 12 volt for the 6 volt - examples: for 25Z6 use a 35Z6 & for 6Q7 use a 12Q7.

I have done this to radios when replacing a resistive line cord with a standard cord.

[bandersen]

Originally Posted by MAGICBRAIN

You could also drop the some of excess voltage by substituting 35 volt versions of the 25 volt tubes & 12 volt for the 6 volt - examples: for 25Z6 use a 35Z6 & for 6Q7 use a 12Q7.

I have done this to radios when replacing a resistive line cord with a standard cord.

I was wonder about that. I found a 35Z6 while hunting for a good 25Z6.

Could I use a 50L6 in place of the 25L6 output tube

[sean]

Be careful about swapping 12V tubes out for 6V tubes. The 6V tubes generally draw 300mA on the filament while the 12V tubes draw 150mA. Same thing between a 25L6 and 50L6.

[bandersen]

Originally Posted by sean

Be careful about swapping 12V tubes out for 6V tubes. The 6V tubes generally draw 300mA on the filament while the 12V tubes draw 150mA. Same thing between a 25L6 and 50L6.

Ah, good point. I hadn't thought about that.

[dieseljeep]

Originally Posted by bandersen

I was wonder about that. I found a 35Z6 while hunting for a good 25Z6.

Could I use a 50L6 in place of the 25L6 output tube

I've done this numerous times. Substitute a 50Y6 for the 25Z6, a 35L6 for the 25L6. I think, the 35Z6 is a 300ma tube.