It might seem a silly question,but have you got the 'speakers connected correctly ?

The sockets are for two pairs of 'speakers,each pair having  left and right channels.

The SP2 connectors are for say,a pair of speakers in another room.SP2 is controlled by the switch under the front of the unit.

Make sure that you have your pair of 'speakers connected to the SP1 sockets.

If you are sure of the connections,a fuse may have failed.The speaker outputs have a fuse for each channel,and these are concealed inside a small hatch underneath the unit.

These are nice little units,that can sound good particularly when used with virtually any other B&O 'speaker than the X25!

You can connect a streamer via the tape/aux socket at the front of the unit.too

Nick

Hello there,thx for the reply.

Not a silly question at all, considering my experience with electrical devices it's not too much to assume.
I have the speakers connected to both outputs that say Speaker 1 though, so I think that's fine. I will look for the hatch and the fuses asap, though I'm not sure what exactly I will have to look for. But that's something I can definitely check out.

As I said, so far I have been using the aux socket, which is labelled as Headphones to connect the Center to a Bose Link. It works well enough, but I would like to put the speakers I have into to use as well, naturally. 

Many thanks again
Yannick

If one channel is missing only on FM, the problem is very likely to be with the MPX-filter in the affected channel.
They are known to break internally.

Martin

Hello Martin,

FM as in in  frequency modulation for radio? The issue of one speaker being much less audible persists when listening to records as well as the radio or even tapes. 

Just to add, I switched around the cables and even got a new set through ebay, because I first thought the cables might be faulty. Doesn't seem to be the case though:

Yannick

FM as in Frequency Modulation, yes.
In this case radio signals utilizing MPX encoding/decoding and the need for filtering the pilot tone away.
But if the problem is also present when playing records, you can rule out the MPX filter (at least as the common cause).

There are some capacitors in the signal path that will need replacing.
It's typically the small ("subminiature" green'ish or black) ones. They are found many places but particularly the ones near the circular cutout in the large board are of interest.
They leak their fluid and lose function. I suggest you replace the lot.

Martin