|Author:||randelli (registered user: 138 posts )|
|Date:||Mon, Mar 29th, 2010 @ 21:33 ( . )|
I have had to rotate the PT to put the laminations across the width of the chassis - especially with high gain amps. It seems that the field is an oval or figure 8 that is strongest at the lamination ends and weakest at the bell covers. I always locate my PT in this fashion.
As far as the OT goes the general thought is that it's laminations should be perpendicular to the PT; and centered so that it is in the "shaddow" of the field. I have had one OT that was most quiet bell cover to bell cover.
Clff is absolutly right in that there is a trade off with balance, aesthetics, and noise. You can place the OT in the perfect quiet spot with the headphones - only to pick up (or cause) horrible noise due to the routing of the primary and secondary wires.
One last thought. If you are building a combo amp it is a good idea to verify that your transformers will not hit you speaker. Your picture looks like the OT is placed relativly in the center front, which in a combo single speaker amp, would have the least amount of clearance to the speaker. I learned this the hard way!!
Good luck with your build
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