[hpsdr] Speaker output from mercury

[Ramakrishnan Muthukrishnan]

Thanks Jim. I have a few cheap LM386 boards with me. I will try one of those.

73
Ram VU2JXN

On Sun, Aug 13, 2023, at 8:56 PM, Jim Sanford wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Please forgive my incompleteness:  The 10 watt amps I have come from 
> "parts-express", an audiophile DIY source that has served me well in 
> many ways.  They were not expensive, either.
>
> I'm sure there are other sources out there.
>
> Good luck and 73,
>
> Jim
>
> wb4gcs at amsat.org
>
>
> On 8/13/2023 11:21, Jim Sanford wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> 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
>>> _______________________________________________
>>> HPSDR Discussion List
>>> To post msg: hpsdr at openhpsdr.org
>>> Subscription help: 
>>> http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
>>> HPSDR web page: http://openhpsdr.org
>>> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
>>
>
> -- 
> This email has been checked for viruses by Avast antivirus software.
> www.avast.com
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at openhpsdr.org
> Subscription help: http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
> HPSDR web page: http://openhpsdr.org
> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/

-- 
  Ramakrishnan