Modding B&O speakers?

15 replies
Anyone ever thought -or tried out modding any of their speakers? I have these Beovox S45-2 ones and I do like the imaging but feel like the tweeter driver could be replaced with a better one.
I'm not averse to modding speakers. However, you might want to consider restoring the speakers to original condition before trying modifications. Verify that the capacitors in the crossover are good, the surrounds are in good condition, the cabinet is properly sealed, etc. The tweeters might have ferrofluid that has gone bad. The S45's are generally regarded as a nicely voiced speaker. If you don't like the sound of a well restored speaker, by all means hack away. But keep in mind that it is pretty hard to improve upon a well designed speaker. What specifically do you not like about the speakers? Glitch
What other speakers did you compare to? Did you replace the capacitors or are the still the original? Martin
S45 speaker sound pretty good if technic is ok. Little bit oldfashioned, not very clear, but pretty ok. The crossover is made with bipolar electrolyth caps. Even new, the sound is just ok, not more. Replace them with this material: Audyn MKS foil caps. They last or a lifetime... and the sound is superior for tweeters and crossovers. Just a little bit expensive... https://www.google.de/search?sxsrf=APwXEdfKhAIQpbUCQv3JuWa-7OZkPReTWg:1682927688386&q=audyn+mks+kondensator+hifi&tbm=isch&sa=X&ved=2ahUKEwi6yrGY0tP-AhXySfEDHTOxAKIQ0pQJegQIBRAB&biw=2752&bih=1011&dpr=1.25  
Just to clarify: Do you mean it sounds superior once that condensator is installed?
So, basically, you are comparing a 45 year old speaker still running on its original capacitors that, ideally, should've been replaced 20 years ago, to two speaker models that are currently available new in shops - and you find them lacking a little treble? Well... replace the capacitors to grant it just a hint of fairness. Kits are readily available. Beovox S45-2 is an incredibly well balanced and sounding speaker, but it is not "audiophile" and will never be. Keep in mind it was merely somewhere in the middle of the Beovox model range at the time. Martin
That Philips tweeter was very good. It was used in many great speakers, including Philips’s own legendary MFB active speakers. I agree that replacing the Xover caps should be tried, hoping that the units were not damaged. No ferrofluid was used by Philips, by the way. Jacques
Jacques
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.

BeoSound Level

1st Prize

BeoConnect Core

2nd Prize

BeoRemote Halo

3rd Prize