Marshall Origin 20H - which speaker connecton slot to use to connect 2x12 cab

[jajo]

Hello All,

Seems obvious but not really given how the slots on the head are marked. Please can anyone advise which speaker connection slot should I use to connect a dedicated Origin 2x12 speaker cab. It has two Celestion Seventy 80 speakers, 16ohm 80W each. The cab is 8ohm though. It's a bit confusing then. The amp works when the cab is connected to the middle one as well as the one on the right (see the picture). I was just wondering which is the correct one and if there are any implications of using one over another. Thanks

 

[Edgar Frog]

The middle one with 8ohm directly below it is the dedicated single 8 ohm tap on the Origin.

 

[J.LaGrassa]

When 2 16 ohm speakers are wired in parallel you get 8 ohms, so the 8 ohm tap is what you want.

 

[fitz]

Long story short : middle one.
If that's an actual pic of your amp, it has the "fix" sticker, so either factory or service center repair of the 1st gen Origin speaker jacks.
I think the fix actually hard wired the two 8 ohm jacks to parallel, but just use the middle one unless you're running a pair of 16 ohm cabs.

 

[jajo]

Thanks all. I will use the middle one then. It seems there is slightly more high end when connected to the middle one which is actually not that pleasant. But I guess that's because of the Seventy 80 speakers which have that "piercy" sound that I am not really a big fan of.

 

[fitz]

Thanks all. I will use the middle one then. It seems there is slightly more high end when connected to the middle one which is actually not that pleasant. But I guess that's because of the Seventy 80 speakers which have that "piercy" sound that I am not really a big fan of.

That "piercy" high end goes away over time with the Seventy/80's, as you replace them with greenbacks...