SSLtech
Well-known member
So I've got this D12 which has no low end. (yeah... the old story!)
The acoustic chamber seems to be clear, and I notice that at some time it may have been dropped, since the one of the four brackets to which the suspension 'leaf-springs' attach has been bent slightly and was pressing against the diaphragm surround.
-So I bent back the bracket, but there's still no low end.
More investigation required...
I notice that the two ends of the voice coil wire are 'sleeved' and joined -VERY delicately- to the wires which run to the 'transformer' around the perimeter, but if I wanted to investigate the 'centering' of the diaphragm for example, What shoudl my next step be?
-Do I need to (CAREFULLY!) desolder the voice coil ends?
And then which screws do what? There appear to be three recessed screws (one every 120°) at about 2, 6 and 10 o'clock... but then there are also six screws which sit proud of the surface, at about 12, 2, 4, 6, 8 and 10 o'clock also...
I thought that Rod and Zebra50 had some D12 repair suggestions somewhere, but I can't find anything. -Would this be worth photographing in case it helps anyone?
Keith
The acoustic chamber seems to be clear, and I notice that at some time it may have been dropped, since the one of the four brackets to which the suspension 'leaf-springs' attach has been bent slightly and was pressing against the diaphragm surround.
-So I bent back the bracket, but there's still no low end.
More investigation required...
I notice that the two ends of the voice coil wire are 'sleeved' and joined -VERY delicately- to the wires which run to the 'transformer' around the perimeter, but if I wanted to investigate the 'centering' of the diaphragm for example, What shoudl my next step be?
-Do I need to (CAREFULLY!) desolder the voice coil ends?
And then which screws do what? There appear to be three recessed screws (one every 120°) at about 2, 6 and 10 o'clock... but then there are also six screws which sit proud of the surface, at about 12, 2, 4, 6, 8 and 10 o'clock also...
I thought that Rod and Zebra50 had some D12 repair suggestions somewhere, but I can't find anything. -Would this be worth photographing in case it helps anyone?
Keith