[Jukebox-list] Extention speaker

[rockolakid]

Jay,
       Thank you very much. for that info.
              Douglas

----- Original Message ----- 
From: "Jay Hennigan" <jay at west.net>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Wednesday, May 24, 2006 7:45 PM
Subject: Re: [Jukebox-list] Extention speaker


> rockolakid wrote:
>> Thanks Dave/Ron,
>>                             There is no voltage tapings on the amp, but 
>> there is a little slide switch that moves between LOCAL SPEAKER and 
>> ADDITIONAL REMOTE SPEAKER ( I presume you have to throw this switch) and 
>> a connector strip  with connection points A.B.C,  B-C are linked, I 
>> presume the extension speaker goes somewhere? on these connectors, but it 
>> doesn't give any size limits, sorry I dont yet have a drawing, Thanks
>
> The switch moves a transformer tap to a lower impedance point to 
> accommodate the additional load.
>
> Terminal A is ground.
>
> Terminal B is the pole of the slide switch, amplifier output.
>
> Terminal C goes to the cabinet speaker.
>
> To connect a regular low-impedance extension speaker, put the switch in 
> the "Additional remote speaker" position, connect the external speaker 
> between A and B, and leave the jumper in place to allow the internal 
> speaker to continue to play.  If the extension speaker will be in the same 
> room as the jukebox, swap the wires to it both ways for best bass response 
> to ensure proper phasing.
>
> Or, you can get a 70-volt transformer and connect the external speaker to 
> the "500 ohm" terminals through the transformer.  This will allow you to 
> selectively control the volume to the extension speaker with the 
> transformer taps.  500 ohms is 10 watts on a 70 volt system.  For lower 
> volume to the external speaker, select a lower wattage tap.  Similarly, 
> swap the wires for best bass.
>
> To lower the volume of the cabinet speaker if it is too loud in comparison 
> to the remote, you will need an L-pad.  Connect the hot to terminal B, the 
> ground to terminal A, and the center to terminal C. Remove the B-C jumper.
>
> See:  http://www.verntisdale.com/schem/1448.jpg
>
> -- 
> Jay Hennigan - CCIE #7880 - Network Administration - jay at west.net
> NetLojix Communications, Inc.  -  http://www.netlojix.com/
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