Can I use my Bass amplifier (s25b?) to jack in a guitar and a bass?

So you want to both play at the same time?

For just practicing, that wouldn’t be too bad, but you’ll see a huge loss in quality in both instruments unless your amp has 2 EQ sets. With only one EQ someone’s going to need to compromise their tone a lot to make that work. There’s a good chance the sound will come out very bassy on the guitar and kind of flat on the bass.

And if the speaker blows, don’t say we didn’t warn you. That’s a very good equation for a blown speaker if you’re playing at a high volume.

Also, note that even though your amp has 2 inputs you may not be able to play through both at the same time.

So I’d say if you don’t really care about tone out of the 2 instruments, go for it, but be very very careful when playing at a high volume.

I wouldn’t place my bet on it working. I’d say keep the pedal, use it for your bass, and ditch your friend.

That’s the other thing. Playing with a distortion pedal through something like that could be an issue because the first sound of a speaker blowing is slight distortion, something you won’t hear when using the pedal.

You can do this, as long as you keep the volume very low. i experienced this same situation one night. my band was playing at a fraternity homecoming party at Vanderbilt. the theme was set on Hawaii. as the night progressed, everyone became a little more drunk. around midnight, someone dropped a beer on the lead guitar player’s amplifier. a blue streak reached for the ceiling and the amp was shorted – out. now, both were using the bassman’s amplifier. right in the middle of playing The Twist, all hell broke loose. the bassman’s amp died. later, at the music shop, a worker told me that the wires crossed in the speakers magnets, because of the loud volume and the combination of both instruments being played at the same time in one amplifier. this was a Fender Bassmans amplifier with four twelve-inch speakers. two speakers had to be replaced. the fraternity paid for all the damages, since one of their members caused the problem.

I would not use two instruments in one amplifier.

Thanks, don’t think I’ll try it since this is in no way an emergency.