VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 07-24-2011, 04:35 PM
tx_jayhawk tx_jayhawk is offline
 
Join Date: Mar 2005
Location: Olathe, KS
Posts: 374
Default Lemo (Bose) Plug Pinout

Guys,

At the hangar and trying to reroute some wiring. Anyone have the pinout for the Lemo plug that you could post or email me?

Thanks,
Scott
Reply With Quote
  #2  
Old 07-24-2011, 04:42 PM
HT1 HT1 is offline
 
Join Date: Apr 2006
Location: Tennessee
Posts: 45
Default LEMO

Hi Scott,
Just finished wiring mine. Send me your email in a PM and I'll send it.
__________________
Harry Herst
Eads, TN
Reply With Quote
  #3  
Old 07-24-2011, 04:46 PM
roee roee is offline
 
Join Date: Feb 2006
Location: San Diego, CA, U.S.A.
Posts: 770
Default

pin 1: Power (10-32VDC via 1/4 A fuse or 1/2 A breaker)
pin 2: Audio ground (also serves as power return)
pin 3: Audio left
pin 4: Audio right
pin 5: Mic high
pin 6: Mic low
__________________
Roee Kalinsky
San Diego, CA, U.S.A.
RV-7A under construction
www.kalinskyconsulting.com/rvproj/
Reply With Quote
  #4  
Old 07-24-2011, 04:54 PM
tx_jayhawk tx_jayhawk is offline
 
Join Date: Mar 2005
Location: Olathe, KS
Posts: 374
Default

Harry,

PM sent...thanks!.

Roee,

Can't seem to recall the extra 3 black wires...I am guessing they are the shield grounds, but I don't recall the recommended interconnect.

Scott
Reply With Quote
  #5  
Old 07-24-2011, 05:14 PM
HT1 HT1 is offline
 
Join Date: Apr 2006
Location: Tennessee
Posts: 45
Default Lemo

Scott,
I called Bose asking the same question. All 3 grounds are 26AWG and no way of telling which goes where. 2 are shields and 1 is a power ground.

They said it doesn't matter.

I used a OHM meter to determine which grounds were associated with the other wires and assumed the other is the power ground. I then wired according to the diagram. Haven't tested it yet though.

Good Luck
__________________
Harry Herst
Eads, TN
Reply With Quote
  #6  
Old 07-24-2011, 07:13 PM
roee roee is offline
 
Join Date: Feb 2006
Location: San Diego, CA, U.S.A.
Posts: 770
Default

Quote:
Originally Posted by tx_jayhawk View Post
Roee,

Can't seem to recall the extra 3 black wires...I am guessing they are the shield grounds, but I don't recall the recommended interconnect.

Scott
Scott,

I'm not using the harness Bose sells precisely because I didn't like the way they handled the shield grounds.

If you use their harness only to jumper across from the standard headphone jacks to the LEMO a very short distance away, then it probably won't matter in practice. A few inches is likely too short a run for the shielding to make any difference one way or the other. Just connect all the grounds together and you should be fine.

But if you use their harness to run a longer distance, say a few feet from the LEMO all the way to the audio panel, then the way you handle the shields and grounds will actually matter, and doing it per Bose's instructions may cause noise problems.

Looking at Bose's instructions, it appears that they intended the former, and gave no thought to the latter.

-Roee
__________________
Roee Kalinsky
San Diego, CA, U.S.A.
RV-7A under construction
www.kalinskyconsulting.com/rvproj/
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:34 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.