DaanHoffmans Posted June 24, 2015 Share Posted June 24, 2015 Hi There, Since 2011 I use of 10 Line-6 XD-V70L systems for a music theatre group. I combine the body packs with lavs fron Microphone Madness lollipop well as Sennheiser MKE-2's. However, from the very first beginning the signal is polluted with a very high pitched whine, especially when the belt pack is not in direct contact with the skin of the actor. We avoid the problem by wearing the packs close to the body, but in two topics I read about a whining noise which might be the same as mine: http://line6.com/support/topic/8372-xd-v75-distortion-again/ http://line6.com/support/topic/7389-input-impedance-tbp12-beltpack-when-pin-4-tied-to-pin-3/?hl=whine&do=findComment&comment=53250 Do you expect the problem to disappear when shorting pin 4 and 3, of is there an other known issue with these (slightly aged) packs? Best regards, Daan Hoffmans Quote Link to comment Share on other sites More sharing options...
tccc Posted June 25, 2015 Share Posted June 25, 2015 Hi Daan, I've reported this several times on here and to tech support, but never really managed to get anywhere. We actually have 14 XD-V75s, which all (apart from one which was replaced recently) have the high-pitched whine to varying extents. As you say - it depends whether it's touching skin or not, and you can silence it by completely cupping the transmitter in your hand. If you want to make it really loud you can put the transmitter right next to the receiver rack! I was told it only affected early V75 units, but obviously that doesn't seem to be the case. I was also told on this forum that it was a known fault, and required a small modification to the beltpack with a resistor added, and some sort of extra shielding where the antenna connects to the mainboard. However, every time I've spoken to Line 6 support in the UK, they've denied all knowledge of this being a known fault, and stated they've never seen it before. I even sent all the transmitters in to their UK centre, who claimed they couldn't find anything wrong with them. If anyone from Line 6 is reading this and willing to finally resolve it, please let me know! I can confirm that shorting pins 4 and 3 doesn't help. Thanks, Daniel. Quote Link to comment Share on other sites More sharing options...
DaanHoffmans Posted June 25, 2015 Author Share Posted June 25, 2015 Thanxs for sharing this experience Daniel. However: in one of the topics you mentioned that you solved it by yourself using of sealant? Is this the same problem? in that case: can you please provide a bit more information about that fix? Daan Quote Link to comment Share on other sites More sharing options...
KrisJ Posted September 24, 2015 Share Posted September 24, 2015 I specifically joined the forum because of this issue! I'm glad to see I'm not the only one... Means there is a chance at finding a solution. One place I mix we Have a XD-V70 Lav that has the high pitch whine.. I actually have a graphic EQ inserted to notch it out... Really makes it sound great.. :rolleyes: I personally own 3 XD-V75 Lavs and all of them exhibit the same problem. I've also tried the body packs with a Shure Capsule, which sounds quite nice, except the whine is even worse! One of my packs also is very prone to signal drop outs, so It needs repair anyway. But I'd love to find a solution to the Whine, whether it be DIY or an Official Line 6 Fix. I've just resigned myself to renting a rack of wireless gear when I book gigs. It's a bit annoying when I own a bunch of gear that is essentially useless at the moment. I have a couple of the XD-V75 Handhelds that have been awesome and completely trouble free. I'd love to have the Lav's working at that level. Quote Link to comment Share on other sites More sharing options...
Sheriton Posted September 24, 2015 Share Posted September 24, 2015 In the spirit of troubleshooting, does the problem only exhibit when using particular lavs or is it with every lav (including the L6 one bundled with the systems)? I've only ever used mine with headsets and haven't seen this problem; I'm just wondering how one could recreate it. Quote Link to comment Share on other sites More sharing options...
Sheriton Posted September 28, 2015 Share Posted September 28, 2015 Over the weekend, I inadvertently discovered a way to create a high pitched whine with my headsets. They were all laid out very close together before being fitted and one of them was clearly picking up some RF from its neighbour as it was producing a very distinctive whine. As soon as either of them was moved more than a few inches away, it disappeared. Never a problem in real world use. I assume this isn't the same issue experienced by others, unless actors are double-mic'ed or in extremely close proximity to one another? Quote Link to comment Share on other sites More sharing options...
KrisJ Posted October 1, 2015 Share Posted October 1, 2015 In the spirit of troubleshooting, does the problem only exhibit when using particular lavs or is it with every lav (including the L6 one bundled with the systems)? I've only ever used mine with headsets and haven't seen this problem; I'm just wondering how one could recreate it. I experience the same problem whether using the standard Line 6 Lav, a Shure Lav, a Countryman headset, and a samson headset. So I for me it's def. not related to a particular mic. Quote Link to comment Share on other sites More sharing options...
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