AVS Addicted Member
Join Date: Nov 2006
Location: Colorado Springs, CO
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I am no expert on installed sound of that sort, but you might be able to get by with a small number of speakers for background music in that small space. As I am no expert, I could only guess that 4 speakers might be enough.
You might be able to get by with almost any receiver and wire the speakers in parallel for a 4 ohm load. As it's background music you don't need much power and therefore 4 ohms is pretty safe.
If they wanted to play music louder, like for after hours cleaning and such, you probably want a good mid range receiver.
You can try a series wiring setup, which gives you a 16 ohm (nominal) load (again with 4 speakers.)
If you wanted more speakers, you can do a series parallel wiring with 4 speakers per channel for a total of 8, but this is a more unpredictable load. With 8 speakers, you might consider a different solution than a stereo receiver.
Also note that if you get an AVR with a 5 or 7 channel stereo mode, you have more channels to work with than just two.
For speakers, I think any decent speakers would do the trick. Yamaha makes budget speakers that seem to sound good in my experience. Polk and Klipsch are other reasonably priced brands I have had good luck with. You might want to look for speakers designed to be bracket mounted unless you want to build some shelves.
Make sure you use the proper wiring gauge for speaker wire (for the distance you need to run the wires for.)
People who do this stuff for a living probably have better advice than I can provide. But they may tell you that you want a more expensive distribution system as well, which I am not sure is true in that small of a space ( and given the background listening levels, which as I say don't need a lot of power.)
"But this one goes up to 11"