I'd decided to rip out the speakers and fit "better" ones. An old pair of headphones should do the trick.
This is a shot of one of original speakers in its pouch.
Pop it open...
De-solder the connector to re-use...
You could probably fit the new speakers in the original case (speakers look the same size). I chose not to, thinking the enclosure has an effect on sound quality.
Fit the connector to the new speaker (you may need to glue too) and re-assemble...
The new speakers are slightly bigger overall, but stay in place and don't snag your ears.
With both speakers in place, I powered up and tried the same tracks; IT ROCKS! A million times better and some half good bass!
Haven't had chance to ride with it yet. Watch this space for an update.