Output transformer DC resistance measurements

[mikhett]

I have an output transformer from an 18 watt Ampeg vintage amp that I'm pulling parts from for a new amp build.I measured 97 ohms from red to blue on the primary and 87 ohms on red to brown.DOES THAT SEEM RIGHT?? THANKS

[sluckey]

That's probably right. You were expecting the resistances to be the same? Many times the primary is wound as two separate windings that are then joined together. The second half of the winding is wound on top of the first half and will require more/longer wire for the same number of turns.