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Posted: **Thu Nov 29, 2012 1:02 am**

I was worried to use the Hammond 269EX as at 1st glance its spec'd for 115v. In my home and officer 120v is the norm and so I thought I might been over-running the power transformer. I garbed a copy of the PDF from Hammonds site and it seems the 269EX power transformer has a 125v and 115 primary.
So, If I use the 125V there are no worries that I might be over stressing the power transformer with too much incoming voltage? right?

Thanx... The 269EX is nearly $20 cheaper.

Posted: **Thu Nov 29, 2012 5:00 am**

Right. Probably the most stress is on the 1626, so lowering the B+ by using the 125V tap can help reach the target voltages if everything measures high.

Shannon

Posted: **Thu Nov 29, 2012 8:20 am**

I'm a novice builder so ill start with the 369ex and make adjustments if the b+ is too high. I didn't realize that using the 125v primary would lover the 380ct rating :-(

Posted: **Thu Nov 29, 2012 12:46 pm**

Justin, I misread your original post. Just use the 269EX. It'll be fine. Most of us have mains over 120VAC.

Shannon

Posted: **Fri Nov 30, 2012 10:41 am**

I've used the old style 269EX (115V primary) with no problems, my averageAC line voltage here is 123VAC, with only a volt's variation, under most situations.

/ed B