Q. Is the sound from the various outputs of a 7.1 system vastly different from one another? I'd like to power speakers in different rooms by hooking up to the separate terminals.
--A.S.
A. If you are playing surround-sound material, yes, the output is vastly different, to say the least. The channels are completely different and if you listen to the surround channels on their own it may not sound recognizable at all.
If you are looking to play the same sounds in different rooms with stereo sources and a surround-sound receiver, you need a receiver that has two sets of terminals for stereo, or one which supports multi-zone operation. A stereo receiver with a heavy-duty power supply and two sets of speaker terminals is your best bet if you won't be using surround-sound in any room. Before you buy make sure the receiver will let you run both sets of terminals simultaneously. I recommend looking at models from Harman/Kardon and Outlaw Audio.
------
ADVERTISEMENT
Tiny video camera with great quality, only $8: Every once in a while I find a product that I need to mention before an appropriate question comes in. If you would like to have a lot of fun for less than $8, read on.
I belong to a model rocketry club. When researching my hobby on the Web I found some outstanding onboard flight videos complete with sound, made with a tiny video camera that looks like a car remote fob. On YouTube I found many other videos made by attaching the tiny camera to rockets, model airplanes, model cars, and motorcycle helmets, and placed a foot from train tracks when an Amtrak train rolled by. What fun! Even more fun is the cost, as these cameras can be had for under $8 delivered. It's not just a cheap trinket, though. The video and sound quality is absolutely amazing for a miniscule device selling for under $10.
The keychain cameras record in the AVI format on MicroSD cards. Video is DVD resolution 720x480 and the sound quality is excellent. Power is supplied by a built-in battery that recharges via USB. It couldn't be any more simple or convenient. My only complaint is the time stamp can't be turned off and mine kept resetting itself. I am sure I will figure that out, though.
I made a video of my own using a two-stage rocket and it came out perfectly on the first try. I now have a page devoted to the camera complete with the rocket video and links to other pages that will help you find and use this extremely nifty device. The page's Web address is long so I set up a redirect link to make things easy for you. Just go to http://tinyurl.com/keychaincamera and prepare to be amazed!