Deity THEOS - Canon C70 & R5c setup
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- เผยแพร่เมื่อ 4 ก.พ. 2024
- A detailed video on setting up the Deity THEOS two channel wireless system on the Canon C70 & Canon R5c. I talk about the easiest way to set it up and some of the troubles I ran into along the way.
I use a Kondor Blue dual mini xlr to 3.5 cable in the video.
:00 Intro
:40 audio example from Deity W.Lav Pro
:58 Canon C70 mic input
2:12 C70 menu
3:40 Kondor Blue cable set up via dual mini xlr
4:22 Theos menu setup for rx1+rx2 output
5:45 Two mini xlr cable test
7:05 the issue Im having with c70 inputs
8:17 bad sounds all round
12:23 Zoom F6
13:00 Setting up Canon R5c
14:00 The belt clip - ภาพยนตร์และแอนิเมชัน
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I also use a Deity Theos with a C70. Obviously there are many different ways to do this, but generally speaking in these kinds of scenarios, it is IMO better to use the 3.5mm out from the Theos D2RX (“Receiver”) into the 3.5mm "Mic" input on the C70 (Channels 3 and 4), with the external or on-camera mic being a professional XLR mic, rather than a 3.5mm output mic. The preamps on Channels 1 and 2 on the C70 are plenty good enough for a professional XLR mic. The “Out Type” on the D2RX would of course be set to “A = RX1 + RX2”.
When taking the 3.5mm output from the Theos D2RX into the 3.5mm "Mic" input on the C70 (again, Channels 3 and 4), I set the C70's "Mic" input to LINE (pg 4 of the Audio tab). Then I can set the “Level” of the Theos D2RX receiver to 0dB. I then adjust the amount of Gain on the C70's "Mic" input (again, in LINE mode) to whatever is needed to maintain a consistent level from Transmitter to Receiver to Camera, usually around 55 on the C70's Gain for Channels 3 and 4 (pg 2 of the Audio tab).
This should prevent distortion at each hop, and it also gives some breathing room in the gain staging at the D2RX Receiver level, vs. needing to have it all the way down at -20dB.
Hope this makes sense.
Thanks heaps for the detailed reply, I appreciate it. That totally makes sense.
I’ll give that a go and see if it suits my setup.
@@videographerstuff539 Happy to help! Thank you so much for making the video and drawing attention to the issues. I should note that I was an audio engineer for many years before I ever got into video, so audio is still my native language, as it were.
Thank you for this strategy! This seems to have a much cleaner signal for me than using "Mic" level. Question... Why do you suggest Ch3/4 instead of channels 1/2? Are the preamps different on the C70 in those channels?
Yeah I’m not sure, but where I come unstuck with the options is being about to quickly turn the dial the lower or increase audio levels on say my lav. I know I always have the 32bit float file on the device up sometimes I shoot for tv stations and they don’t want separate files, they just want the audio within the video file.
Hope that makes sense
@@SoundItOutFilms Hi Eric! Sorry, I didn't see your reply until just now for some reason. Thanks so much for all your C70 content, btw! Love your channel.
There are really two reasons why I recommend using Chs3/4 instead of Chs1/2 in this scenario.
The first reason is because if there's any chance at all to add a boom mic or an on-camera mic to the setup, a professional XLR mic is (IMO) quite a bit more preferable to using a 3.5mm based mic. Or maybe I'm even just using the built-in mics on Chs1/2 to pick up a little ambient sound in the space (they're not bad at all for that purpose). I want to be able to control the gain on those built-in mics with the knobs on the back of the camera on-the-fly.
The second reason is perhaps a bit silly: I just like the simplicity of using a 3.5mm-to-3.5mm cable, rather than using a 3.5mm-to-miniXLR-splitter adapter cable. The only real gain (no pun intended) of using the Theos on Chs1/2 is having access to the gain knobs on the back of the C70. But if I'm gainstaging correctly through the system, I don't actually need to touch the gain on the C70's audio inputs anyway - there's enough headroom as long as I'm using sane levels. And it's also quick to adjust the gain for Chs3/4 anyway - I have "CH3/CH4 Level" saved in my Custom Menu. One of my Custom Menu pages is all Audio-related stuff, so it's super quick to get to if I really needed to change it.
I'll confess I haven't spent too much time trying to go from the Theos D2RX Receiver into Chs1/2 on the C70. If you really wanted to go that way instead, I would assume the best move would be to make sure you have Chs1/2 on the C70 set to LINE level input, which I would think should also allow you to keep the D2RX Receiver's "Level" at 0dB. But I don't know the respective impedances of the C70's Chs1/2 inputs vs its Chs3/4 inputs offhand. You asked if the C70's preamps on Chs3/4 are different than its preamps on Chs1/2. I would say almost certainly yes.
I realized, too, though, that I'm kind of misnaming things here: On the C70, you can of course assign whichever set of audio inputs you want to either Chs1/2 or Chs3/4. There's no rule that the "INPUT Terminals" need to be assigned to 1/2. So really what I'm saying above is that I think it's advantageous to hook up the Theos D2RX Receiver to the "MIC Terminal" (that is, the 3.5mm jack). That 3.5mm jack could of course be assigned to Chs3/4 or Chs1/2, whichever makes more sense to you.
Hope I didn't get too confusing there. Let me know if it makes sense or not...
you stated using the 1+2 on a single output works quite well.. how does it work when you use the zoom sound recorder into the c70 ? what cables are u using from the zoom into the c70 and what cables are you using from the zoom into the diety theos receiver ?
Hey, when I refer to the zoom recorder, I mean that separately to the c70, as in, the zoom recorder is taking the audio and not the c70. I would then sync the audio with the c70 footage in Final Cut.
The cables I’m using from Theos to the zoom f6 are 3.5mm to xlr cables from deity.
definitely seems like the line out circuit on the theos is problematic but you can check with a separate mixer rather than a camera to be certain. definitely not the cables.
Yeah I’m pretty keen to test different cables as well as a different input. It will be interesting either way.
Even with the appropriate gain-staging, have you noticed some decent hiss/self noise in your recordings when transmitting? When plugging into my camera with the lowest possible gain setting in-cam, 20dBu out the receiver I still get self noise. I’ve adjusted the transmitter a few times as well. This on mic level. Not sure if it’s the lav mic or what.
Hey, i wonder what’s going on there. I must admit it was harder than I thought to get a decent sound into my camera.
I have a couple q’s on your setup,
what camera are you using?
Are you getting the same hiss/self noise in the audio file recorded directly to the sd card? Are you noticing it more out of out put A or B on the receiver unit?
I thought a couple times that I’ve gotten a ‘hotter’ signal out of my B output… not sure though
@@videographerstuff539thanks for the response. I’m using a Panasonic S5II, which doesn’t have the best preamps but I don’t think the noise should be this apparent. I wouldn’t say it’s “un-usable” but it is noticeable.
I set the gain per Diety’s gain-staging videos. -20dBu on the output of the receiver, RX1+RX2 on A. Panasonic S5II is set to -18dB (which is the lowest) on the meter (it also has a “Sound Rec Gain Level” setting with options for “Low” or “Standard” which I’ve set to “Low”) at mic level. Then I adjust the gain on the transimtter around +24dB and +21dB. Tried to do a line level in cam even with the 3.5mm cable and didn’t really help.
Yeah that’s weird hey, seems like all settings are at the good level. Was the self noise/hiss as bad in the recording as it was via headphones out of camera?
Hi i have the canon c70 & was thinking of buying this system for interviews what's your verdict
Hey, yeah I’ve used it a bunch now on jobs and it holds up well. I’d still rather use both outputs individually but using the 1+2 on a single output works quite well.
I haven’t had to use them very far away from the receiver yet but so far so good.
Hope that helps 😃
Any audio drops or audio lag ?
No drop outs so far. I’ve been re scanning at each location. I’ve been able to monitor audio with no noticeable lag.
Thanks for the info I need the system for interviews @@videographerstuff539
Yeah it would serve you well. Or the rode wireless pro is a good option if distance isn’t important.