Using the Spider V as an amp, without speaker in Spider V Posted Friday at 07:17 PM I'm not certain what you're trying to accomplish. First, which Spider V do you have? They have different options for outputs. If you don't use the internal speaker, how are you going to amplify the Spider? Are you going to use another cabinet, the line out into another amp or the line out into a powered speaker? You know you can't plug a speaker output of an amp into another amp. Before you go through the hacking up of your amp and void the warranty, I'd make sure you do the update to Spider V MkII if you haven't already. The revision of the amp models is dramatically better and you might be satisfied with the sound of the speaker with the firmware update.