This article has taught me quite a few things! Thanks @V8 I have bookmarked it and keep going back to.
The most interesting aspects for me are:
Blocking off a trem by wedging a piece of wood between the block and the back of the spring cavity tends to thicken the midrange and soften the transients for a more compressed tone. Some claim it improves sustain – Clapton is a fan. In contrast, floating the trem tends to open up the sound and allow the treble harmonics to ring a bit clearer. You may also discern a bit more of the Strat’s springy ‘internal reverb’ and you can enhance this effect by removing the spring cover.
I would never have imagined that this could contribute to tone. With the mod I am currently busy with I am going to be blocking off the trem, purely in an effort to improve the mids.
If you need convincing, consider how the bridge pickup of vintage-style Strat sets usually sounds disproportionately bright compared to the middle and neck.
It’s because stock Strat wiring leaves the bridge pickup unconnected to a tone control.
WHAT!?! Ok, something for me to investigate
While you are changing blocks – or merely changing strings – try Eric Johnson’s trick of removing the paint from the top of the block for direct metal-to-metal contact. He also removes lacquer from the neck pocket and the area beneath the bridge.
Alternatively, check out Wudtone’s ‘Whacker Plate’ – a 0.5mm sliver of stainless steel that sits between the body and bridge plate to enhance bridge-to-body contact (see our review of various Wudtone Strat upgrades on p88). It improves definition and clarity while providing a smoother vibrato feel
Small changes that can add dramatic tone differences?
So all in all a great article that taught me so much!! Now do an ultimate guide to Les Paul tone... :-)