Chipamp PT question.

[GloBug]

Hey guys I am picking out a transformer from my junk pile for a LM3875 gainclone build.

Let's say I have a 220VA transformer that has multiple secondary voltages. (22-0-22, 13.8)

Can I draw the 220VA from the 22-0-22 winding if I don't use the remaining 13.8v winding?, or do I have to subtract the unknown VA of the 13.8v winging from the total VA?

I have it narrowed down to two transformers with a workable voltage.
One has slightly more VA then the other, but it also has more secondary windings. So I'm having a tough time choosing the best one for my build.

Here are the specs:

PT#1 -removed from 20wpc HarmonKardon hk330i
220VA 22-0-22, 13.8 volt secondaries.

PT#2 -removed from 30wpc Technics SA-222
260VA 27-0-27, 36, 5.8 volt secondaries.

Which do you think would deliver the most power using only the main center-tapped secondaries?

The voltage might be a secondary decision after I sort out this part.

Thanks for your time.

 

[GloBug]

Sorry about the double post, you can reply to this thread here.
http://www.diyaudio.com/forums/power-supplies/203453-question-about-transformer-va.html