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Hardwired IEM off Aux
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knerr
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Joined: 16/11/2010 20:21:29
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Location: West Central IN
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Didn't find anything specific on this is the search, so I'm hoping you all might have some suggestions. Thought I remembered seeing something before, but I could be wrong.
Our band is considering moving a couple people's mixes to hardwired IEM's, and wondered what the opinions were as to the effectiveness of the limiters in the SL16 for this purpose. Can they be trusted to protect hearing, and if so, what settings would you recommend?

Thanks a lot,
Matthew
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mstorch
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Joined: 07/01/2011 20:26:51
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On the 16, I personally don't think so because they're fixed at 0db. Your can use the compressor with the highest possible ratio and adjust the threshold, but then you lose the compression (if you use it on IEM's, I use a bit). With the 24 you have a variable threshold, so that's a bit more suited for IEM's. If you need compression and limiting, pick up a DBX 266 and use it for your limiter - the 166 has a limiter as well as compressor but if you're using the compression on the SL you can use the 266 with the ratio set to infinity:1 for a limiter. It may not be 100% as effective as the true limiter, but I think on the cheap compressors most companies use the same hardware for compressor and limiter, it's essentially 2 linked comps, one with knobs and one fixed as a limiter.

I really don't think the limiter on the 16 does much, opinions?
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knerr
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Joined: 16/11/2010 20:21:29
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Thanks for the reply, mstorch. I guess I'll need to do some experimenting. Another option that might not be too bulky that I just found is a headphone amp Peavey makes that has a built in limiter.
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waveburner32
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Joined: 24/10/2010 14:36:44
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I've been using a mix of hardwired and wireless IEM rigs with both the 16 and 24 for a few years and I've never needed limiting. If you've properly set the input trim for the individual channels you should have a significant amount of headroom which would render most of the limiters somewhat useless anyways. The only issues are going to be someone plugging or unplugging an instrument while others are using the buds and if everyone gets used to running their ear mixes low to begin with (as everyone should) then even those transients shouldn't be high enough to cause damage. Safe practices dictates checking levels on inputs and output sends as well as any knobs for the headphone amps themselves before everyone wires up their ears. You can have a limited signal and still blow someone's ears out if something downstream is turned up too high (like the headphone amp).

I was pretty worried about the same thing when I was getting into IEMs but after using them for a while it's apparent that limiting is unnecessary if you employ standard, safe procedures during setup and train everyone to observe their habits with regards to setting their personal levels and, of course, no musician should ever hot-patch anything without informing the board operator to mute channels.

BTW- for our hardwired system we use the Furman HDS system- the stereo mix gets the drums from a stereo paired subgroup and each of the four submixes is assigned to the other individual musician's voice and instrument. It's really worked out great and is extremely flexible for everyone in the group to get the mix they want without compromises.

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mstorch
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While this is true, I'd still prefer to have them for safety. You could apply that same logic to your mains - if you set your gain structure properly you shouldn't need limiters, but it's still good to have them.
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Core i5 - 2.27 GHz, 4GB RAM, Win7 X64
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tysonviolin
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Joined: 13/02/2011 06:07:21
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Why wouldnt the comressors on the aux outs work for this? I personally dont use them since ive been using the auxes for four hardwired iem setups with no need for limiters whatsoever. This requires good sound engineering and diligence by the group. If you are in the band and this iem setup is being used from stage then there should be no problem. I run into this situation all the time with touring groups other than my own. If you still are worried, the best limiter for iems is the dominator by aphex. I doubt you need it, but with a lack of the requirements above, thats the way to go.
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