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P/P 7868 output transformer nonlinear suggestion

Posted: one year ago Quote #1028
I'm upgrading Conn organ output transformers.im converting the amplifier for hifi use. not sure what transformers to get. its a 2 channel push pull 7869 power tubes cathode biased. nonlinear. what do you suggest for an output transformer. 450vdc on the plates and about 425vdc  on the screens.
Posted: one year ago Quote #1029
Do you know the wattage, input impedance and what output and impedance?
Brian Weston
Tech Support
EDCOR Electronics Corporation
Posted: one year ago Quote #1030
15watts max output for the amplifier. primary impedance of the current transformer is 7.6k and secondary is 8ohm.  i only have about 3.5 inched clearance between the power tubes . this is where the output transformers are located.

thanks
keith
Posted: one year ago Quote #1031
I would look at the XPP15-7.6. We have an 8 Ohms model.
Brian Weston
Tech Support
EDCOR Electronics Corporation
Posted: one year ago Quote #1032
That’s kind of what I was thinking too. With the limited space I have that’s about all a can use.
Now these are hifi grade audio transformers right? These will be the first hifi output transformers I’ve ever purchased. If they make a difference offer the originals I will be buying more for my other tube audio amp.

When wiring it up I would just not use the UL wires right?

Thanks
Keith
Posted: one year ago Quote #1033
Yes, if you do not need the screen taps you just do not hook them up.
Brian Weston
Tech Support
EDCOR Electronics Corporation