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john-sp

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About john-sp

Previous Fields

  • Member Status
    Working outside the industry
  • Current Employment or place of study
    Currently working in machine tool export - anybody want to buy a lathe?
  • Professional organisation membership
    ISCVE
  • Full Name
    John Grisswell TechInstSCVE

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  • Website URL
    http://www.sound-productions.com
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Profile Information

  • Location
    Derbyshire
  • Interests
    All things audio and musical. The culinary arts as long as wine is also available.

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john-sp's Achievements

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  1. john-sp

    200mm gooseneck

    Something like this, perhaps? https://cpc.farnell.com/pulse/pls00073/thread-adaptor-5-8-f-to-3-8-m/dp/ST01633?st=5/8 to 3/8 microphone stand adapter
  2. john-sp

    RVD30 microphone

    I have a few of these and use them pretty frequently. As mentioned above they punch well above their weight. I don't have many issues with them apart from singers who wander off mic and out of their hypercardioid field. I can get a decent sound out of them without too much effort. I bought them on the 4 for £100 deal as a mic for festivals where it wouldn't matter too much if they got damaged. They fill that role perfectly.
  3. Another vote for the DT770s, I use them in my studio, very comfortable and I like the sound, I find them reasonably detailed for the money too.
  4. john-sp

    Speaker fuses

    I used to encounter this problem in schools, mainly with JBL Control speakers, The EV ZX1s seemed harder to pop, but determined schools could still manage it. The issue was teachers/students not understanding that the knob on the front of the amplifier is an attenuator, not a volume control. There would be a complaint that the sound in the hall was too loud, so somebody would go in and turn the amps down to make it quieter. The next time the system was used, somebody would realise that it wasn't as loud as last time, and whack all the gains on the desk up to get it to the same level as before. This would result in a virtual square wave being delivered to the speakers, which eventually would take out, more often than not, the HF drivers. I spent many a training session in schools trying to make people understand that turning down an amplifier doesn't make it quieter, just makes it harder to go as loud as before.
  5. From the above-linked article in the Daily Mail: "An expert in building restoration suggested either excess water or a loose lighting rig could have been responsible. Martyn Watchurst, who has helped maintain ceilings at the Royal Opera House and Windsor Castle, said that plaster could be weakened by faulty fittings. 'The collapse could be caused by something as simple as a chain from the lighting rig attached to the ceiling which brings the whole ceiling crashing down,' he said. 'Sometimes these rigs are put up at high speed and without the time to properly check the structure can take it. 'What could also have happened is the obvious: the heavy rain made the weight of the cast increase significantly. This puts pressure on it and the whole thing crumbles and collapses. Once one bit comes away it pulls the rest of it down with it.' " Obviously that quote is pure speculation, I think it is rather stupid to cast aspersions on the show crew's technical expertise with no proof whatsoever! The real cause will come out after the evidence has been examined, but I would bet on water damage rather than a lighting rig being suspended from plasterwork!!
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