Whether or not you can blow a speaker has nothing to do with what kind of signal you are sending it but the power you send to the speaker. In other words, whet

Whether or not you can blow a speaker has nothing to do with what kind of signal you are sending it but the power you send to the speaker. In other words, whether the current going through the speaker is sufficient to either overheat the voice-coil, or to drive the speaker-cone beyond its physical limits. These are qualities pertaining to the speaker itself, not the PC's output. The easy answer to the question is "It depends".