KLING & FREITAG K&F SWi 118E - Manual (Page 20)

User's Manual K&F ‘SW’ Series Subwoofer Systems
KLING & FREITAG GMBH ©1998 - 2015 Version 5.1, 29.05.2015 Page 20 of 20
7.4 Replacement and Positions of the Short Circuit Fuses
When the fuse is burned out, then the chassis is most likely already ruined, as the fuse
just prevents consequential damage resulting from a short circuit of the chassis.
A disassembly of the chassis is, therefore, unavoidable.
7.4.1 Subwoofers without Crossover (XO)
The fuse holder of the subwoofers without a crossover (XO) is mounted on the signal
wiring behind the input connector. The subwoofers with two chassis have 2 fuses be-
cause the chassis are intended for parallel use.
When replacing the fuse, the chassis must be removed in order to reach the fuse holder.
Unscrewing the connecting terminal does not enable you to reach the fuse holder.
When the chassis is re-assembled, first loosely fasten the screws diagonal from one
another, then tighten them. By tightening the screws diagonally in two steps, a defor-
mation of the chassis and thus a possible de-centring of the voice coil can be avoided.
7.4.2 Subwoofers with Crossover (XO)
The fuses of the subwoofers with a crossover are serially mounted on the crossover. The
exact position is described in the chapter ‘Internal Wiring of Subwoofers with Low-Pass
Filter (XO)’ beginning on page 25 for the particular models.
If it happens to be a model, which has already been upgraded, then the fuse holder is
mounted on the signal wiring behind the input connector.
When replacing the fuse in both cases, the chassis must be removed in order to reach
the fuse holder. Unscrewing the connecting terminal does not enable you to reach the
fuse holder.
When the chassis is re-assembled, first loosely fasten the screws diagonal from one
another, then tighten them. By tightening the screws diagonally in two steps, a defor-
mation of the chassis and thus a possible de-centring of the voice coil can be avoided.
7.5 Add-On Kits for Subwoofers without Short Circuit Fuses
All subwoofer systems, which are not serially equipped with short circuit fuses, can be, if
required, easily and inexpensively upgraded even by yourself.
An instruction manual for this upgrade is delivered with the add-on kit.
Subwoofers with a crossover that are not serially equipped with short circuit fuses can
also be, if necessary, upgraded with fire safety fuses. The crossover does not need to be
replaced. For this, we offer an add-on kit that is mounted between the crossover input
and the input connector.