Crate power block speaker question

[mcfly]

I have aquired a crate power block and a Ampeg PB110H bass cab.(The lil 20 pound one)
This is for band practice and as a back up-
The Power block has a MONO 8 ohm out put(bridged/150 watt)
It also has TWO 4 ohm out puts(left/right each 4 ohm/75 watt)
QUESTION
My little cab is 4 OHMS, can I use it in one of the two stereo 4 ohm out puts and have NOTHING plugged into the other?(The guy I got it from says yes)
The manual says nothing about this.
DOES each speaker out put jack switch the amp(s) on when a speaker cable is installed?
Thanks-McFly

[joecool85]

Sounds to me like it is a dual amp setup inside there.  By using just one of the stereo outs it will run your cab just fine.  The other will technically be "on," but that doesn't matter.

[mcfly]

Thanks JOECOOL.Why wouldnt the manual state that?I know people have run it in bridge mode (8 ohm) with a 4 ohm speaker and the amp started cutting in and out.(like a demented tremolo)
By the way-how do I post pic's? THANKS!

[joecool85]

When posting, click additional options, then attatch a file.

And no problem.  I have no idea why it wasn't in the manual.

[mcfly]

thanks!