Speaker volume query

[odin]

Sounds like the potentiometer (variable resistor) of the volumecontrol is nearly deceased. You could perform surgery on the bugger and see if you can replace the potentiometer

[odin]

Most likely, no. In most cases a fooked volume control (or any control knob really) is an old fatigued pot-meter. Desolder the potmeter from the speaker and get an identical replacement from your local electronicsshop. Or get a pair of new speakers ;-).