---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 09/26/14: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:01 AM - Wiring GPS Audio (stearman456) 2. 09:13 AM - Re: Wiring GPS Audio (Robert L. Nuckolls, III) 3. 09:48 AM - Re: Wiring GPS Audio (Vern Little) 4. 06:51 PM - Re: Wiring GPS Audio (stearman456) ________________________________ Message 1 _____________________________________ Time: 03:01:55 AM PST US Subject: AeroElectric-List: Wiring GPS Audio From: "stearman456" When adding the GPS (stereo) audio, do the GPS audio outputs wire directly to the headset jacks in parallel with the comm ouput wires? And when you're using stereo headphone jacks do you just wire the single comm audio output to both jack pickups? I can't see how else you could do it. In my case it's a Garmin SL40 com and Garmin Aera 500 gps. Thanks in advance. Dan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=431124#431124 ________________________________ Message 2 _____________________________________ Time: 09:13:55 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Wiring GPS Audio At 05:00 2014-09-26, you wrote: > >When adding the GPS (stereo) audio, do the GPS audio outputs wire >directly to the headset jacks in parallel with the comm ouput >wires? And when you're using stereo headphone jacks do you just >wire the single comm audio output to both jack pickups? I can't see >how else you could do it. In my case it's a Garmin SL40 com and >Garmin Aera 500 gps. Thanks in advance. Does your system include any sort of audio isolation or mixing amplifier? The legacy approach to merging multiple audio sources into the head-set feeds uses a mixing amplifier. Here's and exemplar device that includes some variations on the audio system architectures. http://tinyurl.com/lvwsypg You might also review the audio system chapter in the 'Connection . . . Bob . . . ________________________________ Message 3 _____________________________________ Time: 09:48:10 AM PST US From: Vern Little Subject: Re: AeroElectric-List: Wiring GPS Audio Here's an alternative: i assume you are a single seater 'warbird' and have no intercom. Connect your comm output and each of the two Aera outputs to 150 ohm resistors. Connect the other end of the three resistors together and connect this point to your headset earphone. Thanks, Vern Little =================================================== Sent from my iThing. It is responsible for all gramma and typo terrors. > On Sep 26, 2014, at 9:12 AM, Robert L. Nuckolls, III wrote: > > > At 05:00 2014-09-26, you wrote: >> >> When adding the GPS (stereo) audio, do the GPS audio outputs wire directly to the headset jacks in parallel with the comm ouput wires? And when you're using stereo headphone jacks do you just wire the single comm audio output to both jack pickups? I can't see how else you could do it. In my case it's a Garmin SL40 com and Garmin Aera 500 gps. Thanks in advance. > > > Does your system include any sort of audio isolation > or mixing amplifier? The legacy approach to merging > multiple audio sources into the head-set feeds uses > a mixing amplifier. Here's and exemplar device > that includes some variations on the audio system > architectures. > > http://tinyurl.com/lvwsypg > > You might also review the audio system chapter in > the 'Connection . . . > > > > Bob . . . > > > > ________________________________ Message 4 _____________________________________ Time: 06:51:20 PM PST US Subject: AeroElectric-List: Re: Wiring GPS Audio From: "stearman456" Fortunately at the moment nothing is hooked up and I have no amp. The radios (Garmin SL40 transceiver, GTX 327 txdr with Ameri-king encoder and an Aera 500 GPS) are mounted, as are the headphone and mic jacks and the four PTT's. There will be an intercom, two position, PTT activated, using the one built into the SL40. Two hole open cockpit biplane. No audio panel. Open to suggestions!! [Shocked] Dan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=431169#431169 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.