Jump to content

noises1

Members
  • Posts

    14
  • Joined

  • Last visited

Profile Information

  • Location
    Melbourne, Australia
  • About
    Location / Production Sound Mixer / Recordist for film and tv drama. Old electronics tech in film sound mix studio & film processing lab with optical sound camera.
  • Interested in Sound for Picture
    Yes

Recent Profile Visitors

710 profile views
  1. I've had the same non-payment issue twice in the last few years. In Australia the Copyright Act 1969 says that copyright is held by the producer - that you 6 people (NOT the show producer) and copyright is transferred to the production when payment is received in full. On the last show I did an EPK & accounts people would not answer my emails requesting payment, so I emailed the EPK producer & was paid the next day.
  2. I had 4 * A20 pre-doubler & pre-Nexus. Using Sony BX1 we got 4.5 hrs as Keenan925. On scripted projects - the cast didn't like the interruption for battery changes. Bluetooth usually took about 30 seconds to link to all 4 * A20 to put to sleep & often the actors had already left set. I found it a painful experience. I understand from users that Nexus control solves this problem. A20 + Double is an awkward shape to fit under contemporary costume. 2 * BX-1 batteries sided by side would have resulted in a thin tx but slightly wider or longer, making costume fitting easier. A20tx is too big - similar size as UM400 & A10. Actors are very familiar with SSM size & runtime of 6+hrs. The Nexus + 8 * A20 tx has a high change-over cost and we should question to real return & advantage of that investment. I've sold all my A20 & keeping Lectros
  3. Do you have an MKH416T or MKH416P? A UM400a has only +5volts available on the input connector, and this +5v is much too low to power a MKH416T or MKH416P. A MKH416T requires +12 volts (in T / Tonader wiring format), and a MKH416P requires +48volts (Phantom wiring format). Ambient make the UMP - its small, light weight, and can power both T & Ph mics. PSC make a power supply that powers only Ph mics & its big & bulky
  4. WRT keyboards - random lockups & only remedy was to remove ext power & onboard battery. I couldn't repeat a sequence reliably to induce the lockup, but removing the keyboard improved. Patience was always required especially with high track counts & long takes. Sorry I can't be more specific. I've just bought a new A4tech & hope that system remains stable. I've used Ambient Masterlockit & phone or tablet for metadata with 788 & that has been stable. I still own & use my 788 for light-weight days. Cantar is main recorder which I love.
  5. SD only recommend 2 keyboards - an A4tech & something else. I've found 788 is very particular about keyboards - my guess is that the 788 is fussy about the keyboard encoder. Remember that the 788 firmware is now 11+ years old & was always "buggy". I did find an A4tech keyboard in UK on ebay
  6. Just fit 2 * 56k 1/8watt resistors into the back of the Tuchel 7-pin connector. Note the Tuchel pins used, & unsolder the wire from the pins, then solder each resistor inbetween the Tuchel pin & the wire. Use tubing to insulate bare connections as necessary
  7. Hello Dan the DC in connector is a very common connector. The mating cable-mounted connector is a Hirose HR10A-7P-4P. The pin numbers are marked on the back of the Hirose insert (Pin assignments viewed from the outside of your mixer connector are: -ve at top-right, +10.5 - 17 V DC in to top-left). Respect the maximum input voltage & avoid any "magic smoke". A battery bank will output only 5 volts from a USB-A so not suitable.
  8. Every analogue tx MUST have a limiter to prevent over-modulation and excessive rf spikes - digital tx would be similar but I have no first-hand knowledge of them except as a user. The user has no control over the limiter parameters. I agree that the SK 5212 are exceptionally good design
  9. Hello Iara Interconnected audio gear should have each each piece grounded ONLY ONCE - (ideally) via the audio cable. For location sound ppl using bag kits, problems arise from several sources - unbalanced audio gear, common-battery systems, internal power supplies that do not isolate the power ground from the audio ground. Your kit most likely has multiple ground paths (via DC ground, RF ground, and audio ground), and this can lead to high noise floor. (You can test this by running the RF distro from the dc distro, and all other gear from their own on-board batteries - (assuming all cabling has been correctly made) & after audio levels are set correctly there should be no low-level hash of any kind.) The solution to this dc power common-ground problem is to install ISOLATED DC-DC converters (as suggested by PCM) to power the RF distro & link transmitters ( the G3/G4 will run all day on AA batteries) so with MixPre powered directly from DC distro, and all other gear either using internal batteries or ISOLATED dc-dc converters. [ISOLATED dc-dc converters do not have any direct connection between dc input ground & dc output ground] [Traco, XP Power, Murata all make suitable isolated converters. Suggest versions with 9-18 or 9-36 volt input, and 12 v output. 3 or 5 watt devices for rf distro & link tx, 10 - 15 watt version for MixPre. (from Mouser, Digitech, Farnell / Element14)
  10. Mini FL is the newest version, then the audio input is Lemo 6pin, with 2 keys placed at 30 degrees either side of pin 1. The cable Lemo is FGA.0B.306.CLAD42
  11. Continuing from Jim's post: the case of the R1a is "ground" for audio purposes, but is at half the DC power supply voltage when 9volt battery powered (Lectro ISOVOLT battery eliminators may have a different outcome). There is a 4-5 volt difference between the Ra1 case and XLR pin1, meaning that if the XLR is connected to the camera, and the R1a case also makes contact with the metal parts of the camera, then a low impedance DC path exists ... a short circuit / fault. I don't know the specifics of what happens with the R1a in this situation, but I have had R1 receivers shut down from excess current & heating on the rx output amplifier. The solution was to fit an electrolytic capacitor into the XLR shield / pin 1 for DC isolation
  12. I've had this problem several times on a Venue that I change frequencies on often. I just change the PB switches on the front panel PCB, ALL 8 switches, all at once, about every 2-3 years. Dismantling and reassembling takes some time, the switches are cheap, a little difficult to remove the switches from pcb - the tracks are narrow so care is needed. The switches have a long stem to pass thru the front panel Remember that the venue settings can be changes via Lecnet from a pc (and mac?)
×
×
  • Create New...