jack.allwardt

In the 60's, as a young man wearing the uniform of the US Army, I was stationed at a large (undisclosed) radar site. There had been issues of soldiers becoming sterile and later on instances of cancer, far above the norm. But, I can't quote any specifics, but I'll bet they're around. Radar wave, microwaves, X-rays, and other RF signals are all a product of electricity, and they all have their inherent warnings. By the way, what about "the scare" that if you held your cell phone too many hours you'd get cancer of the brain? Any specifics on that?

Microwaves heat by stimulating the water molecules in the food. so, if your organs contain water/liquid, you may not cook, but at least get hot! But, the radiation from microwaves can cause more problems than just heat. Cancer, sterility, are a couple of things that come to mind. Be careful out there!

Hi Dudde! Thanks for your response. The original location was mid-way down each bleacher side about 6' higher that the upermost seats. My plan is to mount them on the front corners of the press box (an 8'x12' structure, 9' high.) My speaker wire runs will be 16' and 8', although I will most likely use the 70v line out and the transformers that come with the drivers. OK guys, here's another question: Although 90% of the use of this system will be announcing ball games, the stadium is used for several other activities, the most noteworthy being the 4th of July fireworks presentation. As the sound system was so poor, one member brought in his "home-brew" PA system and set it up just outbound of 2nd base. (Reason: The crowd "dead-line" as dictated by fire marshall) The audience has gotten used to having an announcer in the front of the field, folks come up with questions, requests for pages, music selections, and we do have our Chaplain give the invocation, the singer of the National Anthem, and the winner of the drawing all come to this location. I'm thinking of a medium quality wireless microphone system(s) to interface with the power amp--about 150' away--OK you baseball fans probably know the exact distance from home plate to 2nd base--1) for voice, the other interfacing with an MP3 player for both music and pre-recorded announcements in other languages--yes, we're in THAT part of CA! Any suggestions on systems--trying to keep that cost to under $300 for both channels.

Hi folks--got some real good info so far. Let me add some facts about this problem I'm trying to solve: It is an outdoor stadium, the seating runs nearly 100 feet in each direction from a press box directly behind and above home plate. At the present--there is a 20 watt (yes--TWENTY!) amp driving two 15" horns on a 70 volt line. There is extreme distortion, and the coach who has beem there all this time told me that they really "cheaped out" when they got to the sound system. When we analysed the system, we tried plugging an MP3 player into aux inputs--very clear patriotic music--military marches, etc.--and at low levels of gain, was not good. Announcing with a NEW mic produced a distored, but understandable output--OK for scores, etc. but not a play-by-play. My proposal so far is the following hardware all from parts-express (so far..) Amp: http://www.partsexpress.com/pe/pshowdetl.cfm?Partnumber=300-218&FTR=300-218&CFID=9760487&CFTOKEN=96404083 Speakers (2) : http://www.partsexpress.com/pe/pshowdetl.cfm?Partnumber=300-069&FTR=300-069&CFID=9760487&CFTOKEN=96404083 with these drivers: http://www.partsexpress.com/pe/pshowdetl.cfm?Partnumber=300-190&FTR=300-190&CFID=9760487&CFTOKEN=96404083 My tentative decision was based upon speaking with one of their techs, and then I found this forum and am looking for validation or better suggestions. Again, thanks to those who have responded so far, and please feel free to ask more questions--either on forum or at: jack@exeterlions.org

Hi there! I'm the local Lions Club projects director and have been tasked with replacing/updating/etc. the high school baseball stadium's PA system. This system is 20 years old, and really stinks! I'd like to chat with anyone that has experience or knowledge in this area. Most audio/amplifier/speaker forums don't wish to deal with this mundane subject. Any takers? Thnx!