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Author Topic:  Amp outputs
Harold Dye

 

From:
Cullman, Alabama, USA
Post  Posted 19 Apr 2016 7:58 am    
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On an amp head that has two speaker outputs does it matter which one of the two to use if only using one speaker?
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Georg Sørtun


From:
Mandal, Agder, Norway
Post  Posted 19 Apr 2016 8:10 am    
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It doesn't matter unless they are individually labeled to be used in a specific order.

Normally the two outputs for speakers are connected in parallel, and the only thing you have to think of is to avoid overloading a solid state amp with the speaker(s), or loading a tube amp with output-transformer too much out of ballance with regards to its ideal load (for which it should be labeled).
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Stephen Cowell


From:
Round Rock, Texas, USA
Post  Posted 19 Apr 2016 8:51 pm    
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If you don't use the Normal output on a Fender tube amp then the output is shorted... I learned this the hard way. Leo put a shorting jack on it because the amp lasts longer into a short than it does into an open.. but it won't last forever. Use Normal, then Ext.
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ajm

 

From:
Los Angeles
Post  Posted 20 Apr 2016 6:15 am    
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As the previous posters have eluded to, not all amps are the same. Tube or solid state, this brand or that brand, etc. It totally depends upon specifically what amp you are asking about.

Which you didn't say.
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Harold Dye

 

From:
Cullman, Alabama, USA
Post  Posted 20 Apr 2016 6:45 am    
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It is a MM head and has two outputs with the switch that allows for 4 or 8 0hm loads and is wired in series. I have always used the jack on the right (if facing the back of the amp) when using one speaker. I have tried the other output with one speaker with no problem (just testing, not playing), but I was curious if either would be ok to use should I choose to do that.
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Georg Sørtun


From:
Mandal, Agder, Norway
Post  Posted 20 Apr 2016 7:53 am    
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Based on description: series connected output jacks are NC (Normally Connected) so signal always passes through the unused jack(s), so using either one should be fine.
More important that the 4/8 ohm switch reflects the actual load of the connected speaker(s), and that at least one speaker is connected when amp is on.
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