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TheAmbitiousCard Eternal Order Northern California 13425 Posts |
Here's the wireless/battery idea I'm using. If anyone has a reason why it's not a good idea, please let me know. Instead of a big receiver that requires AC I'm now using 2 belt packs. I've tried it already and love it. Thought I'd ask the pros to see if there is any drawback. The new system runs off of AA batteries:
Old wireless system: http://www.sennheiser.co.uk/uk/icm.nsf/r......o2_a.jpg New wireless system: http://i8.ebayimg.com/03/c/000/77/53/b76b_7.JPG And for my amps/PAs. I can hook up a mic and an ipod to all 3 systems with no mixer necessary: Small, light-weight battery Amp (runs on AA batteries as well or AC. great sound) http://www.licklibrary.com/iguitar/Image......reet.jpg Carvin StageMate for medium to large shows. Also runs on battery or AC. I have the extra speaker for it too. http://www.doremusicexport.com/images/uploads/S4001.jpg For large outdoor shows, the JBL (which has mini mixer on board). NO battery here. http://www.finesound.nl/verkoop/images/eon10%20g2.jpg
www.theambitiouscard.com Hand Crafted Magic
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Dan McLean Jr aka, Magic Roadie Special user Toronto, Canada 804 Posts |
Quote:
On 2009-03-26 02:10, Frank Starsini wrote: Hello, Frank! The "two beltpacks" approach will be significantly less reliable than the typical approach. The reason is that the beltpack receiver has only one antenna, whereas a desktop receiver has two antennae. A single-antenna receiver is known as "non-diversity" receiver, and a dual antennae receiver is known as a "diversity" receiver. Think about the RF signal travelling directly from the transmitter's antenna to the receiver's antenna. That's exactly what we want: A direct path from the transmitter's antenna to the receiver's antenna. Well, that RF signal also bounces off a wall, before reaching the receiver's antenna, and since it's taking a longer route, it reaches the receiver's antenna a litle bit later. Those two RF signals (one direct and one reflected) CAN interfere with one another. I say "can" because there are a number of mathematical combinations between the two signal path lengths that can cause interference. Well, with a two-antenna (diversity) receiver, the receiver system is constantly determining which of its two antennae is receiving a better signal. I know that it may seem there really can't be much of a difference between what each of the two reciever antennae receives, but there really is a big difference. The wavelength of a wireless signal is not very long, so a small difference in antenna placement changes the mathematical results enough that it's very unlikely for that same "multi-path" interference to happen simultaneousy at both receiver antnnae. So, a single-antenna receiver (beltpack) cannot perform as well as a dual-antenna receiver (desktop). Cheers from Toronto!
Dan McLean Jr
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TheAmbitiousCard Eternal Order Northern California 13425 Posts |
HA! I knew there must have been a reason. Ok. Thanks.
Well, until I detect some sort of issue, I'll blindly enjoy its benefits. I do have diversity receiver that can also run on battery, I've found by plugging in a little rack of AA batteries instead of the AC cord. This one is just too cute and little to pass up for a while. Thanks!!!
www.theambitiouscard.com Hand Crafted Magic
Trophy Husband, Father of the Year Candidate, Chippendale's Dancer applicant, Unofficial World Record Holder. |
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