ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
I have a pair of bl8000s and Pentas that buzz (white noise) when 2 of the 3 light dimmers are turned on in the room. Does anyone have any way of stopping this - it is driving me nuts. I have swapped cables (both Belolink and source) to no avail. In fact the buzz continues even when the the speaker cables Are removed.
You don't say what country, or the age of the dimmers, but likely the easiest course of action will be to replace what sounds like old dimmers. Even if you aren't a DIY kind of person, the price for an electrician and new dimmers (I choose Lutron in North America.) will be less than most pieces of B&O gear.
That's assuming the speakers don't pick up the local radio station, or the neighbor's dimmers, or, or, or... It can also depend upon the lighting fixtures: If they have their own power supplies to create low voltage, they need a dimmer intended for that purpose.
Trackbeo. Thank you. I am in the UK and dimmers are in switchplate rotary. Sadly changing to Lutron or similar remote dimming not an option at this stage.
replace the rotary swichplate dimmer with an MK electronic dimmer; about £30 from B&Q
Oops, sorry -- Lutron single-room dimmers are not available for 230V. The U.K. must have a brand that makes a similarly well-designed in-wall dimmer: Look for one that claims to work with compact fluorescent, *and* all modern LED bulb-swaps, *and* (by the way) old incandescent up to the same 600W as original dimmers. Replacing three 1980's (USA) rotary dimmers worked wonders for me.
[Edit: The dimmer type described above is called "trailing edge" (i.e. chopping that part of the electrical sine wave), but maybe merely replacing old dimmers with brand-new but old-style (leading edge, Triac) dimmers will cut the noise, because of newer components and EU noise suppression standards. But the B&Q website is poor: I can't tell by reading, any differences between those MK dimmers. If that's the state of the art, I can see why @Kiran went for the Lutron remote dimmers in his house build.]