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Radio speaker volume control

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nuckolls.bob(at)aeroelect
Guest

Posted: Fri Mar 02, 2012 5:29 pm Post subject: Radio speaker volume control

At 04:06 PM 3/2/2012, you wrote:

  	  Quote: 	
		  I have a small 8-ohm speaker that I plan to connect to the speaker output of my XCOM-760 radio.  For speaker volume control, do I simply wire a potentiometer into one of the wires going to the speaker, introducing a variable resistance in series with the speaker coil, or is something more specialized necessary? 	


    There's a specialized device for direct

    control of speaker volume called an L-pad

    which has all the appearances of an ordinary

    potentiometer . . .



 [img]cid:7.1.0.9.0.20120302191906.03402968(at)aeroelectric.com.0[/img] 



 

    . . . but specifically designed to work with

   low impedance speakers.  See:



  http://tinyurl.com/84jwt7v 



   I think that radio's volume control affects

   both the headset and speaker volumes. Do you

   anticipate simultaneous use of both headphones

   and speaker such that independent control of

   each is necessary?  If so, it could be that

   setting the radio's volume for the desired headset

   level will leave you short on speaker volume

   so that even with the l-pad set for wide-open,

   the speaker volume is found wanting.



 

   Bob . . .

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tim2542(at)sbcglobal.net
Guest

Posted: Fri Mar 02, 2012 6:24 pm Post subject: Radio speaker volume control

Paul the Icom A210 may be different, but on my plane I just used a SPST switch to turn the speaker on/off. Then the volume controls the speaker and headphones if the speaker is selected on, of course I don't use both at the same time so this has worked great.

Tim



Sent from my iPad



On Mar 2, 2012, at 2:06 PM, Paul Kuntz <paul.r.kuntz(at)gmail.com (paul.r.kuntz(at)gmail.com)> wrote:



[quote]I have a small 8-ohm speaker that I plan to connect to the speaker output of my XCOM-760 radio.  For speaker volume control, do I simply wire a potentiometer into one of the wires going to the speaker, introducing a variable resistance in series with the speaker coil, or is something more specialized necessary?

 

Regards,

Paul Kuntz

   	  Quote: 	
		  

	


[b]

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