Custom Audio Electronics 3+SE Tube Preamp Operating Manual Download Page 3

100V

120V

220V

230V-240V

Voltage Selection

To change selected voltage: Open cover using small blade screwdriver or similar tool; set aside cover/fuse block
assembly; pull voltage selector card straight out of housing, using indicator pin; orient selector card so that desired
voltage is readable at bottom; fix indicator pin into notch at opposite side; insert voltage selector card into housing,
printed side of card facing towards on/off switch, and edge containing the desired voltage first; replace cover, and
verify that indicator pin shows the desired voltage. USE PROPER FUSE for voltage selected!

1 0 0 V

u s e

1.5 amp slo blow

1 2 0 V

u s e

1.25 amp slow blow

2 2 0 V

u s e

.75 amp slow blow

2 3 0 V - 2 4 0 V

u s e

.75 amp slo blow

Housing

Indicator Pin

Voltage Selector Card

Cover/Fuse block Assembly

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