For banana plugs and Y-lugs, if you feel that the cable to be inserted is too thin after peeling off the plug, you can fold the cable in half, taking into account the amount of bending, and then insert the cable into the plug and fix it with screws.

 

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The following is a photo of the "Western Electric WE 22GA" speaker cable with the "audioquest Banana Plug Y-Lugs".

The Y-lug type can be crimped by yourself with pliers, or you can have an electrician, electrician, or audio store crimp the Y-lug with pliers.