Let's get started! First thing to do, is to unsolder the existing leads from the primary and secondary wires on the output transformer. In this case, there are three primary wires and four secondary wires. Take a look at Image 1A below for reference… Once we demonstrate the process of swapping the Vox Style transformer for our Supro S6424 Transformer, we will feature sound clips of our NC3015 Amp Kit utilizing the stock 18 Watt OT, the Vox Style AC15 OT, and the new Supro S6424 OT, so you can see how each version affects the overall tone of the amp.įor those following along at home, here’s a list of tools and parts you’ll need:īefore we dive in, as always, we need to drain our filter caps for the sake of safety. If you are unfamiliar with this procedure please read our article on Filter Cap Discharge Procedures before moving on to the next part. If you ARE familiar with this process, please drain your filter caps now and then meet us at the next paragraph! Although our NC3015 kit does come stock with our British Style 18 Watt Output Transformer, the kit we're using in today's experiment had already been modified to include our Vox Style AC15 Output Transformer. There is one more thing we need to note here, however. This kit typically utilizes our 18 Watt output transformer, but today we will be implementing our Supro S6424 output transformer.

Welcome back to another exciting episode of Fix It Friday! A lot of our tech-savvy customers have asked about experimenting with alternative output transformers in some of our kits, so we decided to outline the procedure and capture the sonic changes that would occur with a modification like this. In today’s example we’ll be experimenting on our NC3015 kit, which is a spin on a Vox AC15 style amplifier.

Power transformer wire color code