I chose a set of Audio Selectors made by Gables Engineering for the Lockheed L-1011 project. The L-1011 used a number of different audio selectors, depending on the avionics package selected by the customer. This particular audio selector panel is from a TWA L-1011.
The case for the selector panel is split into two pieces: a top plate that unscrews with four screws, and a "U" shaped enclosure that also fastens with four screws.
Top: The top view of the audio selector is dominated by the brown circuit boards for the push button selectors.
Right hand side view
Bottom view
Left hand side view
Each of the audio selector push buttons has a dual function: (a) when depressed, the audio source is switched to the amplifier and, (b) turning the push button regulates to volume of the selected source. The volume is changed with a potentiometer on the backside of the switch, as can be seen below.
Each audio selector has a primary and an alternate amplifier. The amplifier can be selected with a toggle switch on the lower left hand side of the audio selector panel.
Hi Curd!
ReplyDeleteWould you have pinout of this audio selector panel? I happen to have same one!
Thanks!
Hello, and thank you for following my blog. I have determined quite a few of the pins on the audio panel. I have a series of postings that show a very similar panel (also made by Gables Engineering). If you think that you are up for trying out to see if they are compatible send me an e-mail. You can check my other audio panel blog postings out here under the following link:
Deletehttp://l1011project.blogspot.com/2012/12/avionics-bending-vhfhf-com-radio.html
It's a series of 8 postings.
Yep email sent - I'm Francisco :-)
DeleteI don't see pinout for the other panel, did I miss it? Sure I can check differences.
Thanks,