Aug 31, 2020 · Note: The color of the wires may vary. 4-wire and 5-wire configurations are differentiated by the way the signals from the first and second secondaries are conditioned. In the 4-wire configuration, only the voltage difference between the two secondaries is measured.
Subject:Re: Output transformer color code question I would check for continuity of the white striped wires with the OPT primary blue & brown in case they are ultralinear taps. Otherwise if they are the 25V & 70V secondary taps, the 70V one especially makes a very nice low impedance output to a slave power amp.