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My situation may actually more complicated than this.

Posted by akltam (A) on May 4, 2015 at 08:57:15

In Reply to: RE: Can I connect the output of 2 identical transformer to get double power? posted by jea48 on May 4, 2015 at 07:45:03:

The power transformer I am talking about is a Lundahl LL1669A.

This transformer has multiple different secondaries such as high voltage coil, 6.3V coil for the filament ...etc.

I have one of the LL1669A driving only 1 pair of 6550 tube. (no problem here). This amp is driving the tweeter in my active system.

I have the second LL1669A driving 2 pairs 6550 tube. The transformer gets very hot as it is approaching the limit VA of this transformer. This is driving the BASS in my active system.

I was thinking if I can connect the High voltage (340V) coil from first LL1669A transformer to the high voltage (340V) coil of the second transformer so that the first transformer can share the loading of the 2nd transformer.

Note that there are other coils like 6.3V for the filament of each transformer which were loaded different under each amp. And I am planning to leave those other coil untouch.

So to be short, I am planning to connect only the High voltage coil of the LL1669A together. As the other coils of the first transformer are loaded differently to the other coils of the second transformer. The total loading of the 2 transformers will still be different.

Do you think I can share the power of the High voltage coil this way between the 2 transformer.

Alan

Edits: 05/04/15 05/04/15

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