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Thread: Fender Super Twin.

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  1. #1
    GAStronomist DrNomis_44's Avatar
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    Dec 2014
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    Darwin,NT Australia
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    Update:

    I just ordered a couple new stereo Cliff jacks for my Super Twin amp along with some other things from Evatco.

    Update 2:

    Just did a quick calculation to see how much 6.3V AC heater current the two power valves and the five 12AX7 preamp valves are going to draw from the new power transformer, and it's going to be a total of about 4.5A, so this power transformer looks to be the most suitable one for the job:

    https://www.evatco.com.au/374bx-power-transformer

    The HT secondary voltage is a bit higher than specified in the SLOCLONE schematics I'm working with, it specifies a transformer with a 360-0-50-360 V HT secondary at 200mA DC, and the new power transformer I have selected has a 375-0-50-375V secondary at 201mA, it does have two 6.3V AC CT/6A heater secondaries, and one 5V AC CT/3A Rectifier heater secondary, so I reckon it's perfect for the job, the original power transformer I made doesn't have a 50V AC bias tap, so the fact that the new one does have one is a bonus.
    Last edited by DrNomis_44; 20-04-2023 at 10:14 AM.

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