Originally posted by GeezerFaction:
I'm working with the same band as gruvnmelo and most of the times I'm the one getting saddled with running the PA. So, this system is especially interesting to me.
But, I do need some more info about the differential "Y" cable. Thats something I'm not at all familiar with. I've used stereo "Y"s, but this doesn't sound the same. Is this something I can easily order online?
Also, the overhead condensers we're using are two Shure KSM 109s. But, Bling Bling (seen posting elsewhere here) also has several other mics thats he's been using. I should avoid using the 109s? Or can I use those for the close micing?
Thanks very much for any help you can give us -- I think we're about a week away from ordering 3 PAS systems and getting some of these questions resolved ahead of time would be awesome.
Ken & Kyle are currently traveling, so I will try to answer your questions. I would NOT recommend the out-of-phase Y adapter (or any kind of Y-adapter for that matter) with condenser mics. These mics have build in preamplifiers and connecting the outputs directly will present the mics with the wrong input impedance.
The Y-adapters are pretty rare, I don't think you can buy them on line. You can buy an ordinary 2-female/1-male XLR Y adapter like YMFF type from here
and put an XLR phase inverter like this here
on one of the female ends.
Again, I would only recommend the adapter for dynamic microphones (like for example a Shure SM57). If you want to use KSM109s (which are nice microphones), you may have to use a little mini-mixer to combine the microphone signals. You can still use the XLR phase inverter on one channel to get the cancellation effect. The 109s should work for bear field as well as for overhead. For near-field you might have to engage the -15 dB pad on the mics.
Hope that helps.