Dumble discussion

[jazzbass]

Hi everyone,

I purchased a Hammond 1750D, 2350 ohm C / T, 4/8/16 ohm 100Watt output transformer to power a quartet of 6L6 in a JM / Wonderland project. I didn't notice when I ordered it that this transformer also has an extra Feed Back winding. It is described as a winding to reduce noise and distortion, can someone explain to me how it is implemented in a musical instrument amplifier?

Thanks

Franco

[talbany]

Hi everyone,

I purchased a Hammond 1750D, 2350 ohm C / T, 4/8/16 ohm 100Watt output transformer to power a quartet of 6L6 in a JM / Wonderland project. I didn't notice when I ordered it that this transformer also has an extra Feed Back winding. It is described as a winding to reduce noise and distortion, can someone explain to me how it is implemented in a musical instrument amplifier?

Thanks

Franco

https://en.wikipedia.org/wiki/Ultra-linear
http://www.r-type.org/articles/art-140.htm

[martin manning]

Hammond 1750D has a dedicated feedback winding, essentially a very low impedance secondary, that can be used as a source for feedback voltage. You could use that instead of one of the speaker taps, or just ignore it. It is not a UL transformer.

[jazzbass]

Hi guys,

thank you talbany and tank you Martin, and again Happy Easter to all.

Franco