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Post by Eduardo Wobblechops on Jan 3, 2016 21:18:48 GMT
Which wouldn't matter if it was to be used with Class II equipment only, as an earth is not a requirement.
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Post by Eduardo Wobblechops on Jan 3, 2016 21:21:33 GMT
YES IT BLOODY WELL DOES!!!!!! At great inconvenience, I struggled to get to the mains socket the BMU is plugged into (it's partly obscured by the PC workstation and pulled out the PC mains plug instead Anyway, I completely disconnected the BMU and tested for earth continuity from sockets to mains plug - perfect earth continuity on my meter!!! Why are you shouting Dave? It was a simple question. I have no dog in this race. I built my own balanced supply, my design was what I considered safe, I couldn't give a toss how others design theirs.
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Post by AlanS on Jan 3, 2016 21:23:24 GMT
YES IT BLOODY WELL DOES!!!!!! At great inconvenience, I struggled to get to the mains socket the BMU is plugged into (it's partly obscured by the PC workstation and pulled out the PC mains plug instead Anyway, I completely disconnected the BMU and tested for earth continuity from sockets to mains plug - perfect earth continuity on my meter!!! Thank you Dave
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Post by MartinT on Jan 3, 2016 21:46:44 GMT
Which wouldn't matter if it was to be used with Class II equipment only, as an earth is not a requirement. Caiman-II aside, everything I use requires an earth (in fact, the Caiman-II also has an earth post and sounds better for using it).
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Post by Eduardo Wobblechops on Jan 3, 2016 21:53:04 GMT
I was just pointing out the reason for my previous question.
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Post by Deleted on Jan 3, 2016 21:54:01 GMT
All the questions about the BMU are answered in the appropriate section on the HFS forum. Class II operation as well as earthing compatibility with class I equipment explained. It has all been tested under fault conditions. Just so there is no more daft inaccurate information posted. Also Eduardo try touching a live 15 volts (in other words DON'T).
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Post by Deleted on Jan 3, 2016 22:01:48 GMT
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Post by Greg on Jan 3, 2016 22:03:52 GMT
All the questions about the BMU are answered in the appropriate section on the HFS forum. Class II operation as well as earthing compatibility with class I equipment explained. It has all been tested under fault conditions. Just so there is no more daft inaccurate information posted. Also Eduardo try touching a live 15 volts (in other words DON'T). Now you are being a bit of another forum dafty. You obviously have absolutely no idea what Eduardo does for a living! No reason you should but what you posted in your ignorance was rather naive.
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Post by Deleted on Jan 3, 2016 22:08:16 GMT
Well best to be safe than sorry and I have it on good authority that 15v can be lethal.
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Post by Eduardo Wobblechops on Jan 3, 2016 22:11:01 GMT
All the questions about the BMU are answered in the appropriate section on the HFS forum. Class II operation as well as earthing compatibility with class I equipment explained. It has all been tested under fault conditions. Just so there is no more daft inaccurate information posted. Also Eduardo try touching a live 15 volts (in other words DON'T). I have had many shocks over the years at work, and just so you know, I am electrically qualified and do have some idea what I'm talking about. I don't post factually incorrect information as far as electricity is concerned, not deliberately anyway.
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Post by Eduardo Wobblechops on Jan 3, 2016 22:12:40 GMT
Well best to be safe than sorry and I have it on good authority that 15v can be lethal. Very true, but your statement is incorrect, much less can be lethal in the right (wrong) circumstances.
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Post by AlanS on Jan 3, 2016 23:06:19 GMT
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Post by Eduardo Wobblechops on Jan 3, 2016 23:16:53 GMT
Well frankly that's rich coming from you..
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Post by ChrisB on Jan 3, 2016 23:23:02 GMT
Steady boys!
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Post by Eduardo Wobblechops on Jan 3, 2016 23:35:42 GMT
You might note the question symbol at the end of the first sentence, that means I was asking a question, and despite what you think, it was a genuine one. The grounds I have for thinking that was an old post by Richard, which I may or may not be remembering correctly, hence the bloody question.
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Post by Mr Whippy on Jan 4, 2016 0:22:06 GMT
You are back on the bone that said you were not going to chew Richard. GGRRRRRRRAAAHHHHHHH!!!
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Post by pinkie on Jan 4, 2016 6:22:50 GMT
The sound on sound article was from several years ago and therefore referring to stand alone balanced power long before nva decided to build one (or eduardo for that matter) It is worth noting that the reason for studio's using balanced power was to tackle ground loops and not to clean mains. "they are used in studios aren't they" is often put forward as evidence for their magical properties in" improving " sound. But the primary original reason for that was fixing hum problems in an environment where equipment from many sources, often with chassis ground leak problems would be used. This was the reason I originally looked at getting one. As the article noted - they can fix ground loops, but even in that professional environment should only be used if properly understood and appropriately configured and designed. Ironically, on the only 2 occasions I have listened to music through a system using balanced power there was a loud hum which was being tolerated. On the 2nd occasion I intervened to fix it. (it was capacitive coupling of mains from the apple laptop power supply - fixed temporarily by running it off batteries) And there are other ways to fix ground loops - and I have used them, so I no longer currently have a need to consider balanced power.
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Post by pinkie on Jan 4, 2016 6:25:21 GMT
Briefly, since so much recent thread has been devoted to it. A pass through earth does not fix the rcd problem. It causes it.
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Post by MartinT on Jan 4, 2016 6:54:44 GMT
Briefly, since so much recent thread has been devoted to it. A pass through earth does not fix the rcd problem. It causes it. Once again, this thread (which you created) is not about electrical safety, it's about sound quality.
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Post by MartinT on Jan 4, 2016 6:57:04 GMT
I no longer currently have a need to consider balanced power. Since you have been so voluminous about what a BMU contributes (or doesn't) to sound quality, may I now strongly suggest that you borrow one and try it for yourself? Report back on your findings, too? That way, you will have an opinion on the subject.
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