Technical Reference
277 topics in this forum
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- 1 reply
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Good day my fellow sound peeps. Just a question.... I usually use the NP-F970 lithium batteries on my SRb receiver and it lasts a few days. Bought a NP-F550 today and just want to know what the average hours you guys get out of it?Or should I rather ask,at what voltage does the SRb switches off,if the battery runs flat? Thank you in advance
Last reply by Ruvis, -
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So I recently bought a second hand 416T and have noticed it seems to have a more self noise than I expected as well as not having as much gain as I expected. Not knowing if this is just a common 416 sound I recently got to compare it to another 416T and it is noticeably different. I pulled the capsules out and the 416T I bought second hand has a KS16 cap and the other one has a KS15. I am now thinking that my mic has had a replacement capsule put in but wanted to know if the KS16 cap is 48v? Just trying not to fry any of the components. James
Last reply by Glen Trew, -
- 2 followers
- 23 replies
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Hello, If using a headphone monitor with a XLR pass-through like the Rolls PM55P, does it matter if I am using cables with a different brand, spec? If not, then in which case using different cables can become a problem? Until now I have only used one cable from source to equipment, unless going through mixers or preamps. Thanks.
Last reply by Rich Reilly, -
- 1 reply
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Gotham Sound came up with this amazing tool for archiving frequency spectrum scans. The user base can submit their scans to be added to this repository, helping all sound mixers in the world better prepare for frequency coordination: http://gothamfaxes.com If everyone helps submit scans to this repository, we will forever answer life's greatest question: "what blocks are usable in XXX city?"
Last reply by Boomboom, -
- 1 follower
- 14 replies
- 5k views
I have a DPA 4061 terminated with a TA5M for Lectro servo input. I'm having trouble finding an adaptor or schematic for wired 48v, XLR use. Any ideas anyone? -Thanks
Last reply by beartrax, -
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Hi All, Any body got an idea on what frequencies are available in Papua New Guinea particularly round Port Moresby and the Southern Highlands. Are they affected by the Australian Digital Dividend? Any advice will be gladly appreciated.
Last reply by JDirckze, -
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Looking for the exact sized hex tool to remove the rotary fader knobs from my cooper 208. I know i had a allen wrench that worked for these but can not find it now. Need to order it on the internet. Thanks...
Last reply by johngooch, -
- 6 replies
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I friend of mine asked if it is possible to recover the programing on an helical video tape from the early 1970"s The tape is a Sony V-32 I see that there are companies that offer this service and was wondering if anyone on JWSound has used any of these services and , if so, how did it go? Is there any company that you would recommend? Thanks, Bob
Last reply by Robert Buncher, -
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I’m not to crash hot on the whole balance, unbalanced, line and mic level thing. I’m sure I have balanced/unbalanced sorted but not how it all combines with line & mic levels and wiring. Here’s what I need to do. I have a 442 and a Tascam Dr-60. I want to be able to record the 4 direct outputs to the Tascam which has 2 x XLR inputs and a 3.5mm jack for channels 3&4. So the variety of input types has sticked me up a bit. The 2 x XLR inputs can be selected between line or mic. The 3.5mm mini jack is/can only be unbalanced line level, correct? So to get everything matching as best as possible I’ll need to change the 442 settings so that the outputs are …
Last reply by mark kirchner, -
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Dear friends, How do Lectro block 21 and 24 work in Toronto? What blocks work best? Anticipated thanks Libero
Last reply by jason porter, -
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Hi there, I have got a new 788t with cl-8. How can I listen in post fader from my hp? When I use the 788T in post-fader, also if all the cl-8's faders are -∞ I listen the armed tracks. Why? I would like to listen only the tracks that I open from the cl-8. Is it possible?? Thank you
Last reply by Chris Woodcock, -
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Just had a recent experience that I thought others would find useful. I wrote about it on my blog, found here, but the text is below. WAV Goodbye To File Corruption They say that power corrupts. I had never really given that much thought until my 788T froze on me a few days ago. At the end of a 1 hour, 8 minute clip, my unit ceased to function. Running firmware v3.0, I incurred the fatal(Please power cycle your unit) error. I pressed the power button and it immediately blanked out. I didn't have to remove external power or anything, which I found odd from previous lockups. I turned the unit back on and everything worked like normal. While doing my sound repor…
Last reply by Brian, -
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Hey guys, I'm totally stumped. I got the Remote Audio straight replacement cable since my cans were a bit old and one of the ears had gone out. I'm not the world's best solderer but here's what's now happening. Left channel goes to Left ear (as planned). Left AND Right channels go to Right ear instead of Right channel only. I can't figure out why the Left channel is getting to the right ear, full and clear. I tested with a couple different playback devices using youtube stereo test videos. I also put a stereo song in a DAW. Panned full L, I hear L in both ears, Panned full R, I hear R in Right ear, nothing in L ear. Panned center, I think I'm hearing L…
Last reply by Glen Trew, -
- 28 replies
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SD_664_Ch5_NTG3_Noisy.wav I've just tried posting twice and both times somehow deleted all the text, so here's an ulltra brief run down of my issue: Channel 5 of my 664 is producing a weird noise, as heard in the attached sample. It is not cable or mic related as both have been switched out. It happens with both the 416 and Rode NTG3, and any cable. It is intermittent. I first heard it two days ago, about 4 hours into a corporate shoot- single boom, in channel 5. Noise would come and go. Usually immediately after buttoning on. I switched the cable out, the problem persisted, I switched 416 out to the NTG3 and the problem dissapeared. Next day I'm using the NTG3 on a…
Last reply by chriskellett, -
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http://www.tonmeister.ca/main/textbook/index.html
Last reply by ricseq, -
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Hi, I am about to shoot a documentary in Saint Petersburg in russia. Does anybody have any experience as regards with radio frequencies that are not occupied by TV channels in this city ? I haven't found any infos in Olle's "ultimate frequencies list"... Thanks Vincent
Last reply by VM, -
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Hi guys, I'm a long time viewer of the site but haven't posted anything until now. Most of the time any questions I have can be answered by a scan through this site but I want to make sure i'm on the right track with this! I may be doing some work in Taiwan come November and i'm looking at frequencies over there. I have only previously worked in Europe. So far I have only found this - http://www.ncc.gov.tw/english/files/07060/92_070605_1.pdf Am I right in thinking I can use some frequencies of Channel 69 radio mics over there? All my equipment is currently CH38. It also seems I am limited to very low power transmitters- does anyone have any experience with th…
Last reply by Kyle Martyn Clark, -
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Hi, Recently on a shoot the time code on my SD 633 kept resetting to 0.00 every time the machine was powered off. Even though i had entered the time of day and jammed the camera. Not sure why as usually it holds it for the day. Anybody know what might be causing this? Or rather how I guarantee it stays..
Last reply by Symbioth, -
- 1 follower
- 23 replies
- 13.3k views
CAT-5e cable for portable applications: (pre-chewed but not inhaled: researched but I have only a little reliable field feedback) To distribute SD video and audio for Video assist purposes this paper is much too complicated but CAT5 is good enough. Quality is secondary to convenience and cost. Go to Pac Radio and get what they have on the floor. You do the sales people a favor, they will make their quotas and get their commissions, forget all this research stuff. Anyway read on you geeks: Cat-5 solutions are for analog component video and audio signals through cheaper lighter weight Cat-5 cables were the best quality is not so important. Cat 5 was originally mad…
Last reply by studiomprd, -
- 5 replies
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[edited for clarity] Hi Guys, I am getting no love from the manufacturer or the distributor of the microphone, so I am forced to ask here. Has anyone successfully terminated an OST TL40 for Wisycom systems? My best guess would be to wire it for the "2 wire + bias" setting on the wisycom Tx, however I'm suffering a little bit of a mental block over the supply voltage available. The manufacturers spec lists the nominal supply voltage for the TL40 as 1.2volts, the wisy's offer 5.5volts - should I be looking to wire in a resistor or will the mic operate happily with a 5.5v supply? There is no maximum supply voltage offered by the OST on their website and they were…
Last reply by SeeKai, -
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The left channel is interrupted once for 250 ms every 4 seconds. 250 ms later the right channel has two interruptions of 250 ms spaced by 250 ms. Graham's Line Ident Tone System (GLITS) is a test signal for stereo systems devised by BBC TV Sound Supervisor and Fellow of the IBS Graham Haines in the mid 1980s. It comprises a 1 kHz tone at 0 dBu (- 18 dBFS) on both channels, with interruptions which identify the channels. This arrangement has an advantage over the EBU stereo ident tone in that each channel is explicitly identified as belonging to a stereo pair. The EBU Technical Document Multichannel Audio Line-up Tone (Tech 3304) defines stereo lineup tone has havi…
Last reply by mikewest, -
- 1 follower
- 11 replies
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Something has been bothering me for a while. So I have done some crappy, quick turn around jobs. You know the type - A Simple Boom and Lav shoot. The turn around is quick and the editor doesn't even bother with a simple sound mix, because it was shot on a 5D and they spent all their time syncing. The final videos sometimes don't have the audio tracks center panned. The boom is on the left and the Lav is on the right and it just sounds ridiculous. It makes me ashamed to have my name in the credits. I remember that I got a complaint about this a few years ago from an editor. He didn't like that when he brought my sound into his NLE (FCP7 at the time) he had to manu…
Last reply by Jan McL, -
- 1 follower
- 57 replies
- 19.2k views
A quasi continuation from my other recent posts. The hits just keep coming; let's talk levels for a moment. I've gone through the audio for the first couple days and the levels are pretty low around -42 to -30db and occasionally peaking around -24db. This is occurring for both the boom and lavs. From my understanding the levels should be around -12db? I'm not just talking about Wide shots where the boom can't be near the actors either, the same thing is happening in Mediums and O/S, and it's not framed in some artistic way, the players heads are near the top of the frame, so the boom mic if placed properly should be giving a pretty strong signal and I imagine the l…
Last reply by Glen Trew, -
- 15 replies
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Hello, just got a report back from editors saying that -20db tone on the files is playing back at -15db when imported into tbe avid - as a result they're saying the audio is a little hot. question is, is this on my side somehow? I'm using a 788t and ad 256. Thanks J
Last reply by Ze Frias, -
- 7 replies
- 4.2k views
Hello, I want to do a mod in the direct outs of my CS106, like the one Vark Audio offers. The problem is that I live in Ecuador, South America, and sending the unit to them would be a little difficult. So I contacted a local electronics engineer and he told me that he needs the service manual, because the diagrams in the operators manual that I gave him don't have all the information he needs. Does anyone have the service manual of the CS106 or know where to find it? I sent an e.mail to coopersoundsystems@gmail.com, but they haven't answered yet. Thanks. Juan
Last reply by Mirror,
