Both Mikenl and Silvertones make good points. Powered speakers do require AC line cords of some type. Some manufacturers have semi-proprietary cables for these - so they don't get kicked out during a performance.

For example, we use a set of ElectroVoice SxA360 powered mains (nice size for a roughly 100-200 person venue) which have Neutrik 'speakon' type of connectors - not for the audio, but for the AC power. These have a 1/4 turn locking mechanism.

Works great for the intended use - but don't lose that cable! Not so easy to replace. We really should have a spare set made and keep them in a different case, etc.

What's interesting is that the audio connects on these speakers are NOT speakon connectors, just a bog-standard combo 1/4" / XLR jack.

Here's a back-view of them: http://www.keymusic.com/gfx_productcode/91176/2/Electro-Voice-SXA360.jpg

-Scott

BTW one nice thing about these is that if you want to you can press them into service as floor monitors as well - their wedge shape is designed just for that. Many of these powered main speakers are designed for such use - including the JBLs that I would not recommend - simply because of those cold solders (hopefully their QC has that taken care of by now).

Last edited by rockstar_not; 05/20/11 05:59 AM.