[quote name='gjones' timestamp='1434118823' post='2796895']
You can get a flatwound sound from roundwounds, if you take all the tone off your bass. ...
[/quote]
Not really, in my experience - and anyway different flatwounds sound quite different to each other as well as different to rounds.
Of course, with enough EQ and effects etc, you can make anything sound completely unlike a bass.