Spot the deliberate mistake

2 x celestions in a Vox AC30.

First person to spot the mistake gets a picture of a slice of my dad's birthday cake

Lovely wiring technique, how would you call it?   

kedwardsleisure wrote: 2 x celestions in a Vox AC30. First person to spot the mistake gets a picture of a slice of my dad's birthday cake

The Jumper cable is wired negative (-) to negative (-) instead of positive (+) to negative (-).

Best Regrads,

Yup,i have seen this sort of thing a few times,especially in 2x12's,are the drivers wired out of phase with each other? and they wonder why the cabinet doesnt sound quite right?


Edited by jbl_man - 18 April 2013 at 5:28pm

No they are not out of phase but they are wired in series when it should be parallel. Once upon a time it was considered good practice to earth speaker chassis as a safety precaution. However earthing only one is a bit pointless. The only other thing is that the speakers are G12M. If this is an original vintage amp it would have been fitted with Celestion Blue speakers. They are still available. However they cost an arm and a leg and usually get replaced with something cheaper.

Edit. Having had another look at the photo I think both speakers are earthed.


Edited by Creative - 18 April 2013 at 5:26pm