#1
Hello, I read somewhere that I can run my combo amp through a speaker cab with my amps pre amp out feature, But I tried hooking my amp up to my friends cab with that, and it screamed! not in a good way, I mean there was an extremely high pitched squeal.

His cab had 2 inputs on the back, could I have put the jack in the wrong spot?

Please help, thanks.
#2
Well don't use the preamp out, use the speaker out.
“In my anguish I cried to the LORD, and he answered by setting me free. The LORD is with me; I will not be afraid. What can man do to me?”
#4
Well what is the speaker on your combo plugged in to? That's the speaker out.
“In my anguish I cried to the LORD, and he answered by setting me free. The LORD is with me; I will not be afraid. What can man do to me?”
#6
Actually, my amp isn't like alot of amps where the speakers are connected into a jack, mine a wired into something, so am I just screwed about getting a cab, because my band plays alot of shows, and at venues where my amp isn't mic'd there is so much feedback.
#7
Many combo amps dont use a speaker jack its hard wired form speaker to amp. A jack can be added then make a lead from the combo speaker to plug into the jack. Unplug the internal speaker and use a cab if you want then. BUT if its a SS combo your gonna usually gonna be stuck with a 4 ohm load so whatever cab you use would need to match the ohms of the internal speaker or speakers.
#8
You will need to wire up a 1/4" plug that goes to the ext cab. SS amps are ok with an impedance equal to or higher than the minimum spec'd impedance load.
#9
SS are ok with mismatch but going from a 4 ohm load to an 8 ohm will cut the volume alot.