I’m away from home at the moment and my daughter called to let me know there were thunder storms in the area and would I like my hifi switching off. Yes please I said and everything is powered off. However, the Naim logo on the 5si has stayed on even though the power is off and all the other lights, power, vol, source etc have gone out. The only way to switch off the logo was to pull the power cord.
Am I,losing my marbles or is something amiss here?
Sounds like it was not properly powered off. Logo should go dark after a minute.
However, please be aware that switching things off in a thunderstorm does nothing!.
You must actually unplug items and put some distance between the wall socket and the plug. When plugged in, ground and neutral are still connected and that’s what lightning travels up to fry things. Simply powering them off is the same as leaving them powered on in this respect.
You’re right but I can’t expect my daughter to get behind my racks and remove the power cords. Makes me feel better and she feels she’s helped out. Never had a nearby strike in the 35yrs I’ve lived there so fingers crossed.
Maybe didn’t give the logo time to clear but it was still on a good 10-20 seconds after the switch off. Maybe it’s fine, just never noticed before.
The reservoir caps on the rectifier are big. My 250 will stay on for a full minute after power off. Playing music and everything.
Not sure how this plays out normally on your box but when I powered down my 200 the logo would stay lit for a remarkable length of time before suddenly fading. Several times it almost persuaded me I’d not been firm enough with the power button.
Best thing is to have it all on one block or in my case 2. Remove the plug from the block. Also remove ethernet cables from streamer so system is not connected to anything.
That way it is not connected to anything whatsoever. If your house is struck by lightning badly, it may do damage to other equipment. I have heard of sockets being blown out of the wall.
This is extremely unusual. The weather forecast shows every day thundery storms but ther has been no thunder or lightning at all!
When I started my Naim journey I used to unplug if lightning was forecast and rush down in the middle of the night if I heard thunder or saw lightning!
Bit more laid back now. But if concerned take the plug out. Turning it off will do nothing to help.
Is your HiFi worth more than your own life!? (OK, on this forum the answer might be yes for some!) If you’re worried about a lightning strike, by the time you can hear it, it’s close enough to cause damage. Really not a good time to have your fingers wrapped around a plug 
If the lightning is immediately followed by thunder then it’s right on top. If there is a gap then then the lightning strike is some miles away.
Unplugging electronics is sensible. What do you do ?
The gap between lightning and the thunder noise is 5 seconds per mile. So if the gap is 30 seconds then it’s 6 miles away. Sound takes more time to travel than visual lightning. If you have this in mind you will know whether to unplug or not!
I’ve got to 64 years of age thinking it was one second per mile, and now I find it’s five seconds per mile. Every day is a school day.
Well I’m certainly not going to sit there with a stopwatch trying to work out if it’s far enough away to chance unplugging. Lightning conditions often cover an area many miles wide, and the fact that the last strike was, say, 20 miles away doesn’t mean that you won’t get hit until the weather system travels 20 miles to your location. There’s every chance that you are already in the zone.
What I do is keep an eye on the weather, and if there’s a chance of a thunderstorm I’ll use an online tracker to see what’s happening in real time. Blitzortung(dot)com is pretty good. Obviously you can’t catch every lightning strike, that’s what insurance is for, but having experienced a few direct hits I’m going to at least try to avoid blowing up either myself or my HiFi.
Edit: I also use fibre connections on my home network to reduce the chance of a hit reaching connected equipment. Once bitten, twice shy.
Keep safe everyone from lightning strike. 5 seconds for every mile. If it’s one second then it’s right on top of you!
If it’s 5 seconds you are almost certainly well within the area of the thunderstorm in which the next strike will happen.
The way I always did it is if the gap between lightning and thunder gets bigger then the lightning strike is moving further away. I remember this as a kid.
The lightning strike you heard might be getting further away. That doesn’t mean they all are. Just for perspective, here’s a current example of an electrical storm in which your 1 mile safety margin may not quite be sufficient.
I’m just going to leave everything plugged in and switched on in future. Never had an issue in the last 30 -40yrs so if it happens it happens.
Personally I’m more focused on whether I might end up with a couple of subwoofers when I get some new speakers. If I do, I can contribute to your new thread. Although, the Rel T5x subwoofers recommended for the ATC20s I’m interested in seem pathetic compared to yours. Hmmmm, it’s such an adventure this hobby 
Just to confirm your original query - the Nait5si has the longest decay on the logo of any Naim product I know of ,which is (almost) all of them!
Regards
Neil.
Thanks Neil, I’ve never noticed before as I just normally switch off and walk away. When I asked my daughter to switch off over the phone, I said have the lights gone out. She said yes but not the logo. Just a weird experience
Most meteorologists will say that is magical thinking. If you can hear thunder then you are within the possible range of the next strike regardless of how far away the flashes are.
Last summer, a resident in our neighborhood lost their whole house. Lightning struck the corner of the house and ruptured the gas furnace. It wasn’t even in the cloudy part of the storm which was about five miles away. In their case, nothing they did could have prevented it.
But the rule of thumb is, if you can hear thunder, you can be hit.
Paul,
It’s a case of getting the right Rel’s for your set up. My subs are heavy and cost alot more than the T/5x. Both of these are downsides for me but upsides for you!
The T/5x will be superb subs and match the ATC20s. They will be beefy enough and work with those speakers spot on.
Likewise if I went for T/5x they wouldn’t be right for my system. I think the S510s would have been enough for me. But I am thrilled with what I have.
Look forward to seeing your changes at some point!
