Levente Udud Posted November 28, 2017 Report Share Posted November 28, 2017 Hello all! My recently purchased used MKH 40 just did the strangest thing last week and again today, this modulating high pitch noise appeared depending on mic position and angle. Today the problem went away after a couple of minutes, but it may come back anytime. Anyone experienced simiar issues with a MKH mic? Thank you for your input MKH40_noise.wav Quote Link to comment Share on other sites More sharing options...
Mobilemike Posted November 29, 2017 Report Share Posted November 29, 2017 8 hours ago, Levente Udud said: depending on mic position and angle. Based on the quoted phrase alone this made me think the mic is simply picking up something in the environment. If it was a problem with the microphone itself I would think the noise would be present no matter what the mic position and angle is. -Mike Quote Link to comment Share on other sites More sharing options...
RadoStefanov Posted November 29, 2017 Report Share Posted November 29, 2017 it does sound electrical possibly on the mic. tell us about the rest of the setup. Did you try basic troubleshooting on different cables and preamps on different recorder? Quote Link to comment Share on other sites More sharing options...
daniel Posted November 29, 2017 Report Share Posted November 29, 2017 The only time I've had something like an intermittent problem with a senny (depending on mic angle/position) the sound was very different and it was because something had come loose inside - it had been a badly treated rental. IIRC sennheiser charge c. 200 for servicing mics and this includes everything except a new capsule. When I've bought second hand sennheisers I have tried to factor this in when deciding what I'll pay. If you need the piece of mind to know you can take this mic on job - send it for servicing. Quote Link to comment Share on other sites More sharing options...
Freeheel Posted November 29, 2017 Report Share Posted November 29, 2017 I seem to recall that some earlier MKH 50s had some RF issues - maybe your 40 as well? Cheers, Brent Calkin Quote Link to comment Share on other sites More sharing options...
Patrick Farrell Posted November 29, 2017 Report Share Posted November 29, 2017 Sounds like it's not fully grounded. Try tightening the screws on the mic. Quote Link to comment Share on other sites More sharing options...
soundchris Posted November 30, 2017 Report Share Posted November 30, 2017 (edited) that sounds like a cricket to me, honestly ;-) HP_filter_9khz48db-okt.wav Edited November 30, 2017 by soundchris added WAV Quote Link to comment Share on other sites More sharing options...
osa Posted November 30, 2017 Report Share Posted November 30, 2017 There has been an issue with earlier model mkh's i believe with models having silver pins vs newer ones with updated boards n gold pins. A friend of mine had to send his 50 in and once sennheiser got their mits on it all was fixed -Ken Quote Link to comment Share on other sites More sharing options...
Glen Deakin Posted November 30, 2017 Report Share Posted November 30, 2017 Ask for a chassis upgrade and you should be good. New everything except for shell and capsule. Quote Link to comment Share on other sites More sharing options...
Levente Udud Posted December 4, 2017 Author Report Share Posted December 4, 2017 Thank you all for your input, I have a quite good relationship with my local Sennheiser Service shop and they are in walking distance, so I'm definitelygoing to head there. MobileMike, RadoStefanov: Yes, I troubleshooted, and it's definetly the mic, and I think it's an internal issue, I couldn't recreate the problem on the spot and since either. Quote Link to comment Share on other sites More sharing options...
Lancashire soundie Posted December 5, 2017 Report Share Posted December 5, 2017 I had this many years ago with a second hand MKH40, it was faulty so I returned it to Sennheiser for repair. It's been fine ever since. Quote Link to comment Share on other sites More sharing options...
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