Hi Ron, in this instance I bought the switch from modulusamplification.com/. They also supplied the lay down type transformer. Marshall also sell the the switches but sadly not the transformer. You will have to enlarge the hole a few mm. I used a stepped cone cutter on my drill. The original mounting holes will need to be slightly elongated with a needle file to take the wider bolt fixing centres. The switch has no limit stop and will rotate 360 deg in operation. Be careful to note the correct wire position with regard to the impedance. Wiring for the 50 watt model 4 Ohm, green = 8 ohms, gray = 16 ohms and orange = common/ ground Regards Steve
Can I ask where you got your speaker impedance selector switch from? Nice job!
Hi Ron, in this instance I bought the switch from modulusamplification.com/. They also supplied the lay down type transformer. Marshall also sell the the switches but sadly not the transformer. You will have to enlarge the hole a few mm. I used a stepped cone cutter on my drill. The original mounting holes will need to be slightly elongated with a needle file to take the wider bolt fixing centres. The switch has no limit stop and will rotate 360 deg in operation. Be careful to note the correct wire position with regard to the impedance. Wiring for the 50 watt model 4 Ohm, green = 8 ohms, gray = 16 ohms and orange = common/ ground
Regards Steve
@@stevewardguitars1661 Great thanks for that info.