If there's a separate room connected to the rehearsal space, I'd try sticking the bass amp in there. Maybe open the door a bit. Or drape a heavy blanket in front of the speaker cab.
If it's an active bass, try switching to passive mode.
Don't take this the wrong way, but: I remember worrying about getting my tone during rehearsal. That was a long time ago. For the band I'm in now, the priorities are to nail our parts and make sure the vocals are good. Since we practice quietly enough that the singers barely need microphones, I don't bother with any of my amps during rehearsal but just plug into a PA channel.
This is a working band, though. When we play live, we're plenty loud. If I were in a band that spent all its time rehearsing rather than gigging, I'd definitely want get my tone during rehearsal. Otherwise, where's the fun in rehearsing?
If it's an active bass, try switching to passive mode.
Don't take this the wrong way, but: I remember worrying about getting my tone during rehearsal. That was a long time ago. For the band I'm in now, the priorities are to nail our parts and make sure the vocals are good. Since we practice quietly enough that the singers barely need microphones, I don't bother with any of my amps during rehearsal but just plug into a PA channel.
This is a working band, though. When we play live, we're plenty loud. If I were in a band that spent all its time rehearsing rather than gigging, I'd definitely want get my tone during rehearsal. Otherwise, where's the fun in rehearsing?