I followed this advice 👆 and what a difference! 🤯
Soldered cables and fitted a block (heat shrink is my new favourite toy)
Then used nuts and washers as spacers
and oh my goodness what a joy! Not only is the love seat back to its throbbing best but the sound quality is just extraordinary. No need for a practice amp - my chair sounds just fine thank you.
It's quiet enough you could practice at night without headphones and not wake the neighbours but easily audible, and responsive to the tone controls on the amp.
Comes into its own however when you also use a headphone amp. An immersive, virtual reality experience. With free haemorrhoid and prostate massage thrown in.