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Re: The BMU Bandits

Posted: Fri Jun 21, 2019 10:19 am
by Fretless
The NVA Aesthetics Police will be relieved to hear that the offending white plugs have been replaced by cool-looking black ones. 8-)

Sorry, Firebug, not MCRU or RA. :dance:

Re: The BMU Bandits

Posted: Fri Jun 21, 2019 2:54 pm
by Keithh
I had one of the first run and it stayed and won't be moving. The immediate effect was like having an extension to the living room as the rear wall seemed to have been moved back 6 feet - incredible. Only downside was the hum which I had from the A80s seemed to move to the BMU but that has reduced over time and I have to listen for it now.

Re: The BMU Bandits

Posted: Fri Jun 21, 2019 3:48 pm
by terrybooth
Keithh wrote: Fri Jun 21, 2019 2:54 pm hum which I had from the A80s seemed to move to the BMU
Yeah, but just think of it as an old marshall/fender/vox guitar amp turned up to 11. :grin:

Re: The BMU Bandits

Posted: Fri Jun 21, 2019 5:26 pm
by CN211276
I got rid of the hum with a DC blocker the Doc provided a link to. Around £80.

Re: The BMU Bandits

Posted: Sat Jun 22, 2019 12:15 am
by scotty38
Atlhifi is the place I think, well that's where I got mine from...

Re: The BMU Bandits

Posted: Mon Jun 24, 2019 2:00 pm
by Fretless
I've just worked out that with an extension cable I can also hook the bedroom system (Pi/DAC, Sansui amp & Cube3) up to the BMU.

Could be fun. Have to rig up the cable now.

Re: The BMU Bandits

Posted: Thu Jun 27, 2019 7:57 am
by Fretless
Don't often get the chance to listen to my main system during the day, but one afternoon this week (trying to escape from 33-degree heatwave) I did. The BMU was humming quite loudly - which is the first time I have heard it doing that.

Then the sun went behind a cloud and the humming stopped.
Sun came back - humming started again.

I have quite a large solar-panel array on the barn roof at the back of the house and this is obviously kicking some noise into the mains here, this is also audible via the old NVA A40 that I have in the lounge - that buzzes slightly through the speakers to let me know when the panels are starting-up.

Re: The BMU Bandits

Posted: Thu Jun 27, 2019 8:54 am
by CN211276
I do not have solar panels but for some reason my BMU would usually hum first thing in the morning. This stopped when I connected it to a DC blocker.

Re: The BMU Bandits

Posted: Thu Jun 27, 2019 9:31 am
by Ali Tait
Fretless wrote: Thu Jun 27, 2019 7:57 am Don't often get the chance to listen to my main system during the day, but one afternoon this week (trying to escape from 33-degree heatwave) I did. The BMU was humming quite loudly - which is the first time I have heard it doing that.

Then the sun went behind a cloud and the humming stopped.
Sun came back - humming started again.

I have quite a large solar-panel array on the barn roof at the back of the house and this is obviously kicking some noise into the mains here, this is also audible via the old NVA A40 that I have in the lounge - that buzzes slightly through the speakers to let me know when the panels are starting-up.
Have you checked your mains reading? Having solar panels can add 10v or more to your mains when they are producing. If your mains is high to begin with, transformers could become unhappy with this.

Re: The BMU Bandits

Posted: Thu Jun 27, 2019 9:50 am
by Fretless
Thanks for that tip Ali. Standard AC voltage in The Netherlands should be about 230V - I think I have a multimeter somewhere and I'll try to check it.