Tech Question... Rectifier speaker outs

[screamingdaisy]

Always wondered this....

Is the 16ohm output on the back of a Dual/Triple/Roadster actually a 16ohm tap? Or is it another 8ohm tap that was labeled 16ohm so that people would be less confused about where to plug in their Marshall cab?

 

[Koreth]

I plugged in a cable and measure resistance from tip to sleeve, and got different readings from the 8? tap and 16? tap. A different DC resistance would imply a number of turns on the transformer's secondary at that tap. I'm guessing the 16? tap really is 16?, at least on my tremoverb anyway.

 

[94Tremoverb]

They are actually different taps, apart from the early Rectifiers that say '8-16 ohms'. I don't have a Roaster schematic but I do for the others, and the ones I've been inside match the schematics.

It would be pretty foolish of them to deliberately mislabel an output.

 

[screamingdaisy]

It would be pretty foolish of them to deliberately mislabel an output.

Yeah... I was just wondering why the Dual/Triple, T-Verb and Roadster had a 16ohm output when none of Mesa's other amps (including the Single/Rectoverb and Road King) had a 16ohm out.

I could see them getting tired of phone call after phone call about where to plug a 16ohm cab in.... and them getting fed up and sticking an extra tap on board just to shut people up.

However the 16ohm tap actually being a 16ohm tap kind of shoots that theory to sh*t....