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Building12 Channel Sennheiser G4 system, advice needed

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Dennis Haneda:
Hi everyone, I’m new at using multiple wireless receivers. The school I work at has 8 Senn EW 100 G4’s and 4 older EW G3’s for a total of 12 receivers with 12 body packs with countryman Lav Mics. I have used all 12 simultaneously on two occasions: First time was outdoors; they were not scanned or all on one bank, needless to say we had hissy drop outs. The second time was indoors in a theatre; I scanned and set them all onto one bank. We had no dropouts, they worked great. Both times we used no ASA Splitters, we only used the supplied short antennas.

It is my understanding that to use these 12 receivers properly, I should purchase 4 ASA Splitters and 2 paddle antennas, so that I can minimize RF interference and intermodulation problems. Id like to install all 12 receivers + 4 ASA’s + BNC mount plate, in one large rack.

I’m a musician and a professional small venue live sound tech. I’ve used wireless many times, but never built a system like this before. I teach at the school where this equipment is used.. It needs to be mobile because we do shows in a couple different locations, and the equipment is sometimes shared with another school. It also needs to be as plug-n-play as a possible, because the school staff have minimal A/V experience.

Am I going the right route here or should I just install all 12 in one rack, or 6 in one and 6 in another rack, and just use the supplied antennas? Do I need to buy the splitters and paddles? We have good line of sight and never more than 75’. Thank you. 
 

Mac Kerr:

--- Quote from: MagnetMind on March 13, 2024, 03:41:43 PM ---Hi everyone, I’m new at using multiple wireless receivers.

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Mike Caldwell:

--- Quote from: Dennis Haneda on March 13, 2024, 03:41:43 PM ---Hi everyone, I’m new at using multiple wireless receivers. The school I work at has 8 Senn EW 100 G4’s and 4 older EW G3’s for a total of 12 receivers with 12 body packs with countryman Lav Mics. I have used all 12 simultaneously on two occasions: First time was outdoors; they were not scanned or all on one bank, needless to say we had hissy drop outs. The second time was indoors in a theatre; I scanned and set them all onto one bank. We had no dropouts, they worked great. Both times we used no ASA Splitters, we only used the supplied short antennas.

It is my understanding that to use these 12 receivers properly, I should purchase 4 ASA Splitters and 2 paddle antennas, so that I can minimize RF interference and intermodulation problems. Id like to install all 12 receivers + 4 ASA’s + BNC mount plate, in one large rack.

I’m a musician and a professional small venue live sound tech. I’ve used wireless many times, but never built a system like this before. I teach at the school where this equipment is used.. It needs to be mobile because we do shows in a couple different locations, and the equipment is sometimes shared with another school. It also needs to be as plug-n-play as a possible, because the school staff have minimal A/V experience.

Am I going the right route here or should I just install all 12 in one rack, or 6 in one and 6 in another rack, and just use the supplied antennas? Do I need to buy the splitters and paddles? We have good line of sight and never more than 75’. Thank you. 
 

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I would install the system all in one rack, less to interconnect.
You will only need three antenna distro units if you get the models that can cascade through to the next unit.
Make up a snake cable for the receiver outputs.

Rob Timmerman:
12 channels of RF is going to require multiple antenna distribution units, so I'd split the system to give you more flexibility (perhaps you have an event that doesn't need all 12 channels, and the other school needs to borrow a few extra channels?).  I'd probably split as an 8-pack with the g4 units and a 4-pack with the g3 units, and build a small rack panel with panel-mount BNC connectors for the antenna inputs and the RF cascade outputs.  And definitely a snake for the audio outputs.

You might also consider adding rack drawers for the transmitters, although if you do that, you'll probably want to stick to 4-channel units to keep the size and weight down.  Bu

For plug-and-play, it doesn't get much simpler than "plug in power, connect snake to mixer", which is what you have if you can leave the antennas connected with the case lids on the case.

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