Welcome to our community

Be a part of something great, join today!

Log in
  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

build 15 - audio

alrighty.. i sent in a ticket.

here's the Question:
HISS. on builds 13 and 15.. when i turn the phantom power on for my mic... i did get a xlr to mini-xlr adapter with my red... though i don't know if it's the new one or not.

Answer:
If your cable is one solid piece then your good if it is a cable with a 2nd piece that is the xlr adapter then don't use that one for phantom power.

--------------------------

I didnt quite get it. :s
________
Drugtest
 
Akube said:
alrighty.. i sent in a ticket.

here's the Question:
HISS. on builds 13 and 15.. when i turn the phantom power on for my mic... i did get a xlr to mini-xlr adapter with my red... though i don't know if it's the new one or not.

Answer:
If your cable is one solid piece then your good if it is a cable with a 2nd piece that is the xlr adapter then don't use that one for phantom power.

--------------------------
Click to expand...

What is this 2nd piece??? is it an XLR M-F?
Info I have on the correct adaptor is: TA3M ----- (pad) XLRF just as your picture shows.
 
Akube said:
alrighty.. i sent in a ticket.

here's the Question:
HISS. on builds 13 and 15.. when i turn the phantom power on for my mic... i did get a xlr to mini-xlr adapter with my red... though i don't know if it's the new one or not.

Answer:
If your cable is one solid piece then your good if it is a cable with a 2nd piece that is the xlr adapter then don't use that one for phantom power.

--------------------------

I didnt quite get it. :s
Click to expand...

Hello Akube,

Assuming that the photograph you have attached is the cable that you are using, it is the correct one.

Let's look at your comment/complaint.

You state when you use build 13 or build 15 (the only ones with phantom power enabled) you get "hiss". Several questions come to mind:

1) With build 14 and this microphone, how was the mic powered given that the camera was not providing the phantom power?

2) What gain setting is the channel of the camera set at that has this mic attached?

It is likely that you are simply revealing the noise floor of this mic when it is operational (being powered). If this microphone has the ability to be both phantom and battery powered, compare the two conditions. It is perfectly normal for there to be a small difference in the noise floor of a mic between these two modes as batteries have no residual noise component, only the DC elevation.

Kevin Halverson
 
em.. i never bothered trying my mic with build 14 cause the mic powering option was turned off.

I just got my mic... its a neumann kmr81i.. and it aint got no battery compartment to it. just mic.

1. i tested it on my canon xha1... no hiss.
2. tested it on the RED... it was nothing but hiss and all the recorded voice sounded like way below. it was some loud hiss.
________
TOYOTA HZ ENGINE
 
The hiss I hear in your sample is not unlike the hiss that was present when audio was first enabled (build 13, IIRC?). With a brand new mic that works with other equipment, I would assume that something's still amiss with RED audio.

Do you have a mixer or other auxiliary source of phantom power that you could plug the mic into and feed a line out from that into RED?
 
Akube said:
em.. i never bothered trying my mic with build 14 cause the mic powering option was turned off.

I just got my mic... its a neumann kmr81i.. and it aint got no battery compartment to it. just mic.

1. i tested it on my canon xha1... no hiss.
2. tested it on the RED... it was nothing but hiss and all the recorded voice sounded like way below. it was some loud hiss.
Click to expand...

Can you verify that the mic's attenuator is not activated in your configuration?

Please PM me for additional assistance.

Kevin Halverson
 
We are having the same problem with our RED and mic setup in build 15. Has anyone had success with recording audio in build 15? We just get hiss, and a very low volume from the mic. We are using a high end shotgun mic with its own power supply. Any ideas?
 
laselvasurf said:
We are having the same problem with our RED and mic setup in build 15. Has anyone had success with recording audio in build 15? We just get hiss, and a very low volume from the mic. We are using a high end shotgun mic with its own power supply. Any ideas?
Click to expand...

its OWN freggin' Powersupply Too! there goes that solution down the drain.
________
VAPORIZER REVIEW
 
I did a quick test of my inputs.

Here's what I get:

48V not working on all 4 channels. (tried 2 mics that require phantom power)

Dynamic mic (microphone input / 48v disabled)
_ Records on all 4 channels.
_ Monitor and playback through headphones on channels 1 and 2 ONLY.
channels 3 and 4 don't monitor or playback in headphones but do show a recorded signal.

Haven't tried line level input. Maybe someone with a field mixer can give that a try.

I wouldn't be surprised if RED see a lot of jammed miniXLR's in for repair.
 
Akube said:
ive put a pic in the first page to show what kinda red cable i got... yeah its set to mic. chanel 1... actually tried all channels..
Click to expand...

did you try to set to line?
If your mic has pre-amp and you are blasting at line level and camera is on mic instead of line?

check with line and then with mic setup on the camera.

Was the problem confirmed by RED?
 
OK - a little more info:

Decided to do a little more testing when I got home (after buying a Mac finally - yep right there in a Box... just for RED)

I have the same cable as is posted earlier in this thread. It's one mini to XLR cable that came with the camera. No adapter.

I power on the camera and see all 4 channels indicate phantom power. Hmmm, I thought I had turned them all off. I put my headphones on and I hear a high level of white noise. No microphone attached. I go to my system audio menu and see that NONE of my 48v options are checked. They are all off, but the menu shows them on. The level indicators are solid green to 3 bars. I assume that's the level of the white noise. Not sure.

Then -
I plug in a 48v Mic and THAT channel's green bar goes to zero and I can actually talk into it and hear the mic is working. I don't know if it's noisy because the other channels are still putting out noise. I played with the menus more and basically got to the point where if 48V is enabled then I get the high level of white noise regardless of whether a microphone is plugged in or not.

The other weird thing is I use ear bud style headphones for monitoring because they are small and block a lot of outside noise - they were getting WARM. Is it possible the camera body's heat is being transmitted through to the ear buds? That just seems all wrong to me...

Is anyone having success with their camera and phantom power?

EDIT - another test.

Rebooted again. This time noted a low level whine on input 2. In playback mode the whine went away went in "pause" and the whine returned in playback. So that noise was recorded.

I also noted that disabling the audio input in the system record on/off checkbox also disabled that channel (2) in playback. That seems like a bug to me.

Oh earbuds immediately got warm even though camera body was still cool.

Overall - audio, still very "beta". I'm concerned that some of this is only going to be hardware fixable. You guys better slow down and check this out or you might have 500 cameras coming back for audio fixes.
 
joelnet said:
Overall - audio, still very "beta". I'm concerned that some of this is only going to be hardware fixable. You guys better slow down and check this out or you might have 500 cameras coming back for audio fixes.
Click to expand...

That's been my worst fear from the beginning. I for sure will be delaying my purchase until all audio issues are resolved, even though my number comes up (likely) in May.
 
joelnet said:
Is anyone having success with their camera and phantom power?
Click to expand...

Sorry but may be you should have a look to this:
http://www.sonosax.com/index2.html
look to the MINIR82

I've tested it on a short movie (still in post production) and works very well, sound is good and it is really small.
My only concern is that it seems that the jam sync has one second offset (see my other thread).

Also I've tested the to record directly into the camera but using a sonsax SX42 mixer and setting the camera input to line, and the sound was quite good compare to the same sound but recorded to a pyramix station (http://www.merging.com/).

For best audio, phantom will never be the way to go, however I fully admit it should work like on any digital camera.

cheers,
antoine.
 
You must log in or register to reply here.
Back
Top