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  • 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 :)

RED XLR > MiniQ

Could someone post a schematic of the appropriate way to wire the line converter to get phantom audio from the mini to a full XLR, along with recommended resister values? I'm getting mixed understandings about the situation from the way this thread is rolling out, so it would be nice if a definitive solution was drawn up by someone.

BTW, for those people manufacturing these cables for others... please do NOT add red colors to the wire coat - keeping everything black is the best way to keep the camera from showing up in reflections. Covering everything up with black electrical tape is always a bit of an ugly solution.
 
Hi there,

Please may I ask for a confirmation that we do NOT need any resisters in our XLR cables if we're not using Phantom power (e.g. if we're feeding the RED ONE a line-level feed from an SQN mixer).

Many thanks,
Jack
 
Offhollywood said:
based on a bunch of tests, we made custom cables with a -10 db pad in the cables for LINE in -
Click to expand...

That is one of the three functions of the RED adapter cables. When the camera is in line mode, they raise the input compliance level from 2V RMS (+6 dBV) to 6.6V RMS (+16 dBV).
 
Michael Morlan said:
Mark,

What is the schematic for those -10db cables? My audio guy couldn't get his line level output low enough to avoid peaking on my RED this week.

Michael
Click to expand...

Try a RED sourced cable and all will be fine.
 
Get them from RED unless you have a really good reason not to (which for the life of me, I can't imagine what that might be).
 
Proprietary? Hardly. Just bust open the XLR shell and note the resistor setup within. Very easy to replicate and RED is hardly in the business of making bank from these. Their money is elsewhere. ;-)
 
Michael Morlan said:
Proprietary? Hardly. Just bust open the XLR shell and note the resistor setup within. Very easy to replicate and RED is hardly in the business of making bank from these. Their money is elsewhere. ;-)
Click to expand...

No, not exactly "Proprietary", but rather specific to the RED ONE. As long as one is very confident that they can execute the exact same configuration, having someone else produce them is an acceptable alternative concept, but remember, they must be done correctly.
 
will someone make a 300-500 Dollar (cheaper would be niiiiice) audio breakout box with some controllers regarding this issue.....dont want to order mini xlr-to XLR cables every two months....
 
Those that have seen it at the REDuser party can tell you that its not heavy nor bulky. Its slightly wider than the full size XLR connector at the back. Any thinner, not possible...unless you want to go back to Mini-Q? The HDMI & USB ports are accessible thru the panel, It has an opening for them to pass. We are using the audio monitor output (5pin) for audio monitoring from the panel on the camera (3.5mm jack). The output level to the jack has a volume control pot as well.

Best,
 
airsealand said:
Those that have seen it at the REDuser party can tell you that its not heavy nor bulky. Its slightly wider than the full size XLR connector at the back. Any thinner, not possible...unless you want to go back to Mini-Q? The HDMI & USB ports are accessible thru the panel, It has an opening for them to pass. We are using the audio monitor output (5pin) for audio monitoring from the panel on the camera (3.5mm jack). The output level to the jack has a volume control pot as well.

Best,
Click to expand...

thanks for the clarification
 
If it's a matter of welding three resistors, it can't be too difficult to have it done right. Big reasons for me would be would be: a)custom lengths and b)custom connectors at the other end. I personally would like to have four longer miniXLR-XLR leads that I can secure on a universal mount at the back of the camera plus some miniXLR-minijack(locking) to connect to the Sennheiser wireless receivers without the need of going to and from big XLR. Could anyone summarize clear instructions on how the wiring should be done and the value of the resistors if we want custom cables that work the same way as Red's? Thanks.
 
"Could anyone summarize clear instructions": Apparently Not

"Could anyone summarize clear instructions": Apparently Not

dmartos said:
If it's a matter of welding three resistors, it can't be too difficult to have it done right. Big reasons for me would be would be: a)custom lengths and b)custom connectors at the other end. I personally would like to have four longer miniXLR-XLR leads that I can secure on a universal mount at the back of the camera plus some miniXLR-minijack(locking) to connect to the Sennheiser wireless receivers without the need of going to and from big XLR. Could anyone summarize clear instructions on how the wiring should be done and the value of the resistors if we want custom cables that work the same way as Red's? Thanks.
Click to expand...

TRIVIA ANSWER TO "WHAT ELSE CAN A RESISTOR PAD BE CALLED?"
FYI, when two resistors are connected this way, in addition to being called a 'pad', it's also called a voltage divider. With reference to the pictorial diagram shown earlier, the voltage at the output is the input voltage divided by the ratio R2/(R1+R2) or Vout = Vin * (200K/(681K+200K)) or Vin * 0.227
 
There is no polarity issue, there was just a misprint on the mini xlr picture in the pdf file that was corrected.

The phase on the audio ch 1 to 4 is correct. ver 15
 
Coffey Sound cables

Coffey Sound cables

Coffey Sound has made many input cables for the Red Camera. Before we received feedback that headroom is optimized with a pad in the cable, we made them without the pad. Please note that all cables now in stock and all future cables will have the pad installed. Also, previously sold cables will have the pad installed at nominal charge.

Forrest Forbes
Service Manager
Coffey Sound LLC
 
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