Is this a - maybe unfortunate - default setting?
The default reverb is indeed unfortunate IMO. It is hard-coded in SoundPlayer>>#startReverb
In muO, I use a much lighter reverb (no reverb would make some FMSounds end badly):
ReverbState := ReverbSound new tapDelays: #(1601 3469 7919) gains: #(0.012 0.007 0.001).
Whatever the default, I guess it would be good to have it defined elsewhere.
Stef