5150 and speaker question

Downtuned

Losethehorizonagain
Mar 25, 2011
123
1
18
UK
hi guys, i have my 5150 mk1 at my house now and i was wanting to take a line from the preamp out into my interface and use it with impulses. i understand that i need a speaker load for the 5150 and i have an old 1x12 that i bought at a flea market but will it be safe for my 5150? The 1x12 works alright but I don't know what kind of speaker is in it, i think it's an old PA speaker or something and it just says 8 ohms on the back of the case at the input so i would assume it would be ok if i set my amp to 8 ohms. the volume would be down anyway and i wouldn't care if the speaker was shit sounding it's just to get the preamp out. thanks