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Technical Reference
272 topics in this forum
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- 8 replies
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My trusty (about 15 year old) 416 went scratchy today, intermittently crackling with multiple cables. I had opened it once before so I was curious to take a look and found that one of the two resistors on the input stage had badly corroded (see pic). Sharing this for others, perhaps for my own memory, and to take the comments of those wiser than me: fire away. Notes on opening: -Remove the C-clip from inside the XLR jack with a pair of needle nose tweezers or tiny screwdrivers, while this actually wasn't necessary in this case it's worth noting. -Turn the flathead set screw on the exterior and remove it -Remove the top outer case, the XLR jack assembly…
Last reply by LoganSound, -
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- 14 replies
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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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best manual in the world for DSP-110 Shark Beringer Audio Delay Manual http://wolfvid.com/datasheets/Transmitter_Digital_manual.pdf scroll down a few pages. wolf
Last reply by WhyOne, -
Florian Camerer gives an introduction to the European Broadcasting Union's R128 Broadcast Standard and speaks in general about perceived loudness, peak normalization, loudness normalization, etc. And here the .pdf file from EBU.
Last reply by VASI, -
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- 4 replies
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I have recently upgraded my A10-RX to a new A20-RX. The idea is to move from the crowded UHF band to the 1.3 GHz band and to reduce the lenght of the antenna on the A20-mini transmitters. As I was searching technical informations about the effects of obstacles, and especially human body, on the transmission at higher frequencies, I found this very interesting study: https://www.bakom.admin.ch/bakom/en/homepage/frequencies-and-antennas/facts-and-figures/the-effect-of-the-human-body-on-wireless-microphone-transmission.html If I understand well, if the body is an absorber in the UHF band, it acts more like a reflector at higher frequencies. …
Last reply by Soundwil, -
EMW wiring
by Brett- 11 replies
- 3.5k views
I was wondering what the pin assignments are to wire a Countryman EMW for 3 pin wiring to be used with Lectrosonics UM transmitters.
Last reply by Eric Toline, -
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A friend of mine is trying to make a .WAV file in FCP with time code for a music video-type application. He sent me a file which played on my MAC but not on my 744T. The 744T sees the file exists on the CF card, including the .wav extension, but says it is an "unrecognizable file format". I called SD, and they are looking into it. Anyone have any suggestions? Robert (818) 304-3066
Last reply by Jonathan Reyes, -
- 3 replies
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Following the DTV transition, there will be some changes as to where in the spectrum the TV stations will call home. In my area (Indianapolis), for instance, a couple of stations will transition their DTV frequency back to where the analog one was. In other cases, stations are moving into slots formerly occupied by yet a different station. To help sort out how the changes will affect your favorite freqs, here are the FCC's "Coverage Maps for All Designated Market Areas" as they are projected to be after the switch to full DTV is made: http://www.fcc.gov/dtv/markets/ (Thanks to Matt Mayer for posting a link, on RAMPS, leading to this link.) I don't recall see…
Last reply by wolfvid, -
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Charles Tomaras has posted this helpful ink on RAMPS; as he doesn't post here, and I don't post there, I'm thanking him, and cross posting this reference: http://reboot.fcc.gov/reform/systems/spectrum-dashboard
Last reply by studiomprd, -
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- 11 replies
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I am starting on a show that requires a light run and gun set up and production is asking that I provide a Comtek M 216 TX. I'll be feeding this from the tape out of my SD 302. Just wondering who's used the Sound Devices schematic to build either the mono tape or mic level output cable? http://www.sounddevices.com/notes/mixers/302/302-tech-note-adding-a-mono-mic-level-output/#more-35 Which is best for the M-216? Are there any other options out there that any of you have been using?
Last reply by studiomprd, -
- 11 replies
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Hi guys, Did a bit a googling but couldn t find what i was looking for.. Is there such a thing as a female to female 4 pin hirose adaptor and would it work powering from two male connector? Needed to power a sr reciever with a np1 cup the other day and realized on set that i was needing such adaptor. Do i really need to buy another power cable? Many thanks in advance! Dom
Last reply by JackHenry, -
- 2 followers
- 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, -
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- 1.1k views
Here's a neat website for finding open FM frequencies. Not used often, but useful for the occasional broadcast to background cars, etc. http://www.radio-locator.com/cgi-bin/vacant?select=city&city=
Last reply by BudRaymond, -
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I discovered this site whilst exploring a "Patchbot" at a very cool Tech based art gallery in NYC. From their home page: "Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical processing...." Click on the community tab to see some interesting projects. http://puredata.info/ Must see Art Gallery: http://www.eyebeam.org/
Last reply by old school, -
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Hi, might lend myself a small gig that involves shooting with the Alexa. From what I heard from many, it is a double-system workflow shooting with it. Since the budget does not justify in investing myself with a Nomad, I'm just wondering if the Fostex FR2 with Timecode option will be able to work with Alexa, timecode compatiability wise. Much advise is needed. Thanks a lot!
Last reply by Eric Toline, -
- 24 replies
- 4k views
I have a Tvc shoot this Sunday where the frame rate will be 33.33FPS. What is this? I usually record at 25 or 24 and I'm a bit stumped as to what to set my 744T to? I have never come across this framerate before and the 744 obviously has no setting for it. .. Would 25 on the 744 do and they will fix it post? Or better to change the FPS to something else? Thank you
Last reply by Tom Conen, -
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Hey Guys. Just wanted to check what radio frequencies / blocks are safe to use in the state of Georgia and Tennessee? Im ( very luckily ) heading out that way for a 3 week shoot from Ireland and was wondering if i can still use my ch38 /Block23-ish (606 to 630 MHz) freq radios or do i have to rent something more suitable out there? Ill only really be using 2 or 3 max at any time.. Also do i need to acquire a license? Any help is appreciated, Gray
Last reply by Graham Newcombe, -
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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, -
- 1 reply
- 1.5k views
Just wondering if anyone has heard of any RF co-ordination software that works in Australia. Have looked at Professional wireless' IAS software but only seems to support USA RF coordination. Cheers in advance Michael
Last reply by MickeyG, -
- 3 replies
- 1.1k views
Hi, I am designing a gooseneck podium mic/preamp. It will use an electret mic. There won't be much shock isolation between the gooseneck and the podium. I am interested in what people think a good frequency response would be. Some issues are low frequency thumps and handling materials such as notes on the podium. Also, what would be a good low pass for sibilance . Keeping in mind that in many instances there will be no sound person present to EQ. The EQ would be permanently set in the preamp. What would you set low and high pass filters at? Thanks for any help with this.
Last reply by Rick Reineke, -
My sister was in town and came with me to a rental house. She was looking at the labels and names on some item and commented that if she had just heard some of the names without seeing the items, she would assume she was in a hunting lodge. I thought it would be interesting to compile a list somewhat specific to our industry with how we define them. butt plug - xlr plug on transmitter dead cat/ dead wombat - "hairy" cover for a wind blimp wire - refers to lavalier plus transmitter. as in "wire the talent" shotgun - supercardioid microphone MOS - mixer outside smoking, Mit out sound, minus/missing optical stripe, etc. *edit - I did a search after posting and c…
Last reply by RPSharman, -
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I've checked the usual references, but would love to get some input from people with on-the ground (well, just-above-the-ground) experience. What blocks and/or frequencies in St. Louis, MO have people found to be especially open or especially crowded? Thanks, Jim
Last reply by Toddsound, -
- 1 reply
- 2.3k views
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
- 1 reply
- 2.3k views
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, -
- 3 replies
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I recently corrupted a drive and in the long search for an easy way to play/save the recovered headerless wav files, I found this programme for a mac. http://tmkk.pv.land.to/xld/index_e.html Just import as a raw file, set the destination folder and away you go! Way easier and quicker then other methods I found... Regards, Grant.
Last reply by studiomprd,
