jamesdesilva Posted January 11, 2008 Share Posted January 11, 2008 Hi...Having spent out a small fortune on four Sennheiser EW100 G2 series wireless handheld systems, with corresponding Antenna & Power Distribution Unit from Shure, I am looking to find some budget beltpack transmitters for use with the JTS CM204 headset. I know I could use the Sennheiser beltpacks, but they are slightly out of price range compared with the JTS stuff. I wondered if there would be any likelihood of problems, mismatching the JTS and Sennheiser systems? As I understand, I can get the frequencies to match up, which is an upside, but I don't want to spend out another small fortune on a beltpack and microphone to find I can't use them!!! This set would purely be used for backing vocals from a Keyboard player live on stage, so quality isn't such an issue either, otherwise I'd be looking at everything from Sennheiser! I have also had no problems using the Shure Active Distribution system with the Sennheiser stuff, so that wouldn't cause any issues either.Ciao, James De SilvaFreelance Musical Specialist Link to comment Share on other sites More sharing options...
KevinE Posted January 11, 2008 Share Posted January 11, 2008 The general answer about this is that the Sennheiser being a fully tuneable receiver should be ok with pretty much any analogue transmitter. The basic rules are that if the transmitter has a pilot tone, it should be turned off as they are proprietary and not always compatible, and that you may have to alter EQ's and audio levels (both in the receiver, mixer and transmitter) to compensate for the different audio responses and companding differences between the two different systems. Since you're not after studio or broadcast quality, and the JTS transmitters are extremely cheap, I wouldnt worry about ordering one unless someone else has been there, done that and specifically failed! I've tried various mics of different vintages around the workshop on the Senn EW receivers and they've sounded fine on all of them, including AKG, Samson, Scanner (Chiayo), Audio Technica and Beyerdynamic. Link to comment Share on other sites More sharing options...
paulears Posted January 11, 2008 Share Posted January 11, 2008 It isn't just the frequency, pilot tone and companding ratio - the bandwidth often varies too - but the only way to find out is to try it and see. Link to comment Share on other sites More sharing options...
jamesdesilva Posted January 11, 2008 Author Share Posted January 11, 2008 thanks all for your speedy replies... I suppose I'll just 'suck it and see', so to speak!!! I can always send it back if it's incompatible anyway! if anyone has actually done the specifics, please tell... before I do something stupid.James De Silva Link to comment Share on other sites More sharing options...
cedd Posted January 12, 2008 Share Posted January 12, 2008 If only you were a little nearer Yorkshire I could lend you one of mine to try. It'll be a couple of weeks before I'm near a setup with sennheiser recievers to do a test I'm afraid. The JTS kit is pretty good on the whole. Certainly never let me down and very well built mechanically. Their latest range has a tighter frequency spacing, hence more to choose from, whereas their first frequency-selectable system (Off the top of my head the 900 series) is slightly wider so the frequencies you want might not be available. Check on the actual model you are getting first. CPC now have a stock of pretty cheap 4 pin XLR flesh coloured low profile headsets. They also list the single beltpack on their web catalogue, though I haven't seen it in the printed one. Seem to recally the price is better than Handheld Audio will do it for.http://cpc.farnell.com/jsp/Audio,+Video+&a...jsp?sku=MP33792 Link to comment Share on other sites More sharing options...
KevinE Posted January 12, 2008 Share Posted January 12, 2008 The Sennheisers aren't fussy about frequency bands, although they come pre-set to jump between the standard frequencies, you can alter a parameter and make them freely tuneable (within the law of course!). Link to comment Share on other sites More sharing options...
jamesdesilva Posted January 12, 2008 Author Share Posted January 12, 2008 again, thanks guys... I've used the jts stuff before, but as all my sennheiser stuff is racked up and road ready, I just wanted to try and add to it by replacing one of the handhelds with a beltpack & headset rather than a whole other system. plus, as said before, I'm already actively splitting RF signal and don't want to have to stick a second set of aerials up if I don't have to!if anyone has the chance to test it out, let me know... if anyone near me has a JTS system, we could meet and test it together?thanks in advance,james Link to comment Share on other sites More sharing options...
Rob_Beech Posted January 12, 2008 Share Posted January 12, 2008 The 300 G2 series use HDX which is a noise reduction system which is designed to reduce RF interference, it compresses the signal to raise the signal above the noise floor and then back again. If the 100 G2 Series also incorporate this feature you may find extremely limited bandwidth when using a transmitter that doesn't support this feature. From what I can gather, this cannot be turned off. You may way be limited to a dynamic range of 55dB. Provided pilot tones are switched off, this is the only problem I can see with using the systems together, but IMO, it's a fairly big one. The only thing you can do is borrow/hire/buy/steal one to try it. Rob Link to comment Share on other sites More sharing options...
boswell Posted January 12, 2008 Share Posted January 12, 2008 EW100 G2 series does use HDX according to Senn website Link to comment Share on other sites More sharing options...
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