[hpsdr] Speaker output from mercury

[Jim Sanford]

you will definitely need an external amplifier.

There are several small board stereo amps available; have one in my 
first SDR, but don't remember whence it came.  I also have some 
"PAM8610" 2 x 10W Class-D audio amps that I bought for my other SDRs.  
Have not used, since I virtualized the audio and the only connection 
between the computer and radio is ethernet.

DO go with stereo -- the binaural mode is VERY nice.  And 10 watts seems 
like way overkill, but it gives you plenty of "headroom", helping keep 
the audio out of the radio very clear and low distortion.  In my 
experience/opinion, this is key to making the radio sound so good.

Finally, to be complete, I use a "sound bar" intended to be the 3 front 
channels ib a 5.1 or 7.1 surround system.  Again, not for power or evetn 
"high fidelity", but low distortion.  Also has the advantage of being 
lower profile than traditional external speakers.  AND, the "center" 
channel makes a nice port for a second radio, without taking any more 
shelf/desk space.

Good luck!!

73,

Jim

wb4gcs at amsat.org


On 8/13/2023 10:36, Ramakrishnan Muthukrishnan wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Has anyone tried an external speaker with the Atlas based transceiver? The aux output is for 600ohms and the other output is for headphones. So, I am guessing we will need an amplifier before giving the headphone out into an external speaker?
>
> 73
> Ram VU2JXN
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