Today's Message Index:
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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
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| Subject: | Wiring GPS Audio |
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
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| Subject: | Re: 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
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| Subject: | Re: 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 <nuckolls.bob@aeroelectric.com>
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
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| Subject: | Re: Wiring GPS Audio |
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
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