Speakers distort after 1hour of play Beocenter 7700 with S45-2 speakers

2 replies

My Beocenter 7700 plays very nice through my Beovox S45-2 speakers (4 speakers) for about 1 hour when it starts to distort the sound. Are 4 speakers too many? Do I need another amp to drive the speakers? The Beocenter gets quite hot on the back after a while.

Thanks for the help.

Starts to distort and gets hot? Probably the no-load current is off, or there are electrolytic capacitors going bad.

Replacing the electrolytic capacitors will help your beocenter sound as new.

Adjust the no load current as per the service manual, probably a good thing to replace the potentiometers for the no load current as these often go bad in B&O devices this age.

Location: Netherlands

or
BeoWorld Gold Membership card
Join BeoWorld

Register to access the forums, reference material, and exclusive member benefits — including our monthly prize draw.

Become a Member

December 2026 Prize Draw

Gold Members Only

As a Gold member you're automatically entered into our exclusive prize draw — your chance to win iconic Bang & Olufsen products. A unique benefit of BeoWorld Gold membership, every draw brings a new opportunity to win something special.