29 c or 84 F in the listening room
Posted by: French Rooster on 20 June 2017
hello,
I am certainly not the only one to have a hot temperature since yesterday in my listening room: around 29 degrees c or 84 F.
Few years before i had a problem with a nap 200 when it was very hot ( 38c) outside, and it also damaged my speakers. All was new, my dealer accepted the guarantee and the nap 200 and speakers were repaired.
But i fear today to have the same problems. So i shut off all my components. My cisco, on rubber feets and with air around, ventilates twice a day also.
Is it safe to listen to music in a room near 30 degrees celsius?
Is it the 500 that has built-in thermostatically controlled fans? If so should be no worries with that. Otherwise if in doubt you could always position a fan blowing air over the heatsinks/cases.
It's about 31 C in my listening room this evening. Nothing is overheating but I'm not driving anything 'hard' like a pair of speakers - it's 'phones only here with a Naim headline and a CB HiCap. The LP 12 just loves it and sounds terrific in a really warm environment.
Innocent Bystander posted:Is it the 500 that has built-in thermostatically controlled fans? If so should be no worries with that. Otherwise if in doubt you could always position a fan blowing air over the heatsinks/cases.
i have nap 300 and an tubes preamp....a fan blowing air is a good idea, but i have not one. In two days the temperature will decrease to normal level here in Paris, so i think it is better wait.
It is quite common for electronic equipment to specify acceptable ambient temperature conditions, though I'm not sure if Naim do. And some equipment will shut down to protect itself in case of thermal overload, but again that might not always be known. However, in practice if the gear is in a reasonable well ventilated place, not enclosed in a cupboard, then I would be surprised if it struggles with a temperature of 30C except if music is played very loud, pushing its towards the limits so generating most heat (excluding class A amps that generate the same amount of heat at all sound levels. But of course, the higher the temperature the smaller the margin of safety, so in the absence of any guidance from the manufacturer everyone has to make their own choice.
Naim amps shut down automatically if they reach 70 degrees C. The 300 has an internal cooling fan, so I don't think you need to worry too much. Maybe best not to work it too hard though.
ChrisSU posted:Naim amps shut down automatically if they reach 70 degrees C. The 300 has an internal cooling fan, so I don't think you need to worry too much. Maybe best not to work it too hard though.
yes and thanks....i would not worry if i had not this problem with my nap 200 few years ago. My linear ps witch powers my unitserve was very hot too...and my cisco is ventiling also twice or three per day. I prefer finally to feel safe and have all shut off, for 2 days, on wensday the temperature will be normal.
Naim recommend that the Unitiserve is kept at a room temperature no more than 35 degrees, but of course a PSU is a different matter.
Do people not have air conditioners in Paris?I live in "the armpit of Ontario"...Windsor,where they are a must have.Last week temperatures were 93 degrees and humid all week,which is normal for most of the summmer.
Is air conditioning optional in Europe?
Bored just thought I would share my overheating experiences with Naim.
Funny thing never had heating problems with my LK 280s, and they were tanks, but I must admit, I do prefer the Rich, Thick sound of the Naim's 250.2, combined with the 282, I'm really enjoying it.
However, the flow rate isn't that of an Full Blown LINN Aktiv System, Hence I'm on Naim's Active path!
Passive Bi-Amped Briks with 200 on the Tweeters and 250.2 on the Woofers and Mids, the 250.2 would shut down when worked hard for an hour or so!
But when I switched and put the 250.2 on the Tweeter, and the unregulated 200 on the Woofers and Mids, no heating problem, but it just didn't fit well with me, plus I noticed I couldn't play it as loud, but one really needed to be tuned in, to notice that subtle difference!
This is what Mr. Richard Dane had to say about that:
June 20, 2014 11:09 AM
like 99.6% of power amps out there, the NAP200 isn't a regulated power amp and so when the going gets tough it just lets things slide a bit. A NAP250 isn't allowed to do that, so it has to work much harder (and gets hotter as a consequence). Remember too that there's much more inside a NAP250 - twice the transistor count for one thing. For all that, unsuitable cabling will get a NAP200 hot.
Furthermore:
RICHARD DANEADMINISTRATOR
6/20/14 3:17 AM
it's the thermal trip operating on your NAP250. It shuts down when the temperature of the casing exceeds 70 degrees C.
A few things can cause this: unsuitable cabling or cabling; connection or cable fault; "difficult" speakers with complex crossovers driven at high level; high ambient temperature with not enough air movement for the heatsink (casework) to expel heat.
In the old days with the original NAP250 driving tricky loads like Isobariks at high levels, some owners directed fans at the amps during the summer to keep them cool. The NAP135 brought its own fan cooling, which is also found in the current NAP300.
Furthermore:
Administrator
June 22, 2015 8:48 AM
Yup, it's well worth doing as little as possible to upset the NAP250 re. cabling. Trying 5m per side of NACA5 is a sound plan. The NAP250 was considered the minimum recommendation for passive Isobariks and hard driving at higher levels could every now and then trip the thermal cut-out. Some resorted to running with the NAP250 tipped up on it's edge for better thermal cooling and even using a desk fan to blow on the casework. Others just traded up to NAP135s (with their own internal fans) when they came along or went active, thus bypassing the passive crossover.""
Hence, I sold my 200, and Upgraded from Passive Bi-Amped Briks > Passive Tri-Amped Briks, No more heating problems, but I did purchase two fans to direct on the 250.2, which is driving the Woofers. For those Secessions, when entertaining for more than hour, and really pushing at 10:00 or 11:00.
The other 250.2s, that are responsible for the Mids & the Tweeters are Cool as Cucumbers!
Enjoy your Music, The Why!
Allante93!
No quarter posted:Do people not have air conditioners in Paris?I live in "the armpit of Ontario"...Windsor,where they are a must have.Last week temperatures were 93 degrees and humid all week,which is normal for most of the summmer.
here the temperature rarely exceeds 30 degree. we have 35 yesterday and today...so it is perhaps 4 days per year, and rarely in june.
Kevin Richardson posted:Is air conditioning optional in Europe?
yes, optional. but in south of France, most people have it.
The heck with my gear, I can't deal with 29/30 degrees Celsius - I would never get to sleep in that level of heat. Outside that is fine, in my dwelling, no go...and that is from someone who lived in Dallas for 27 years, where every summer there are at least 20 days over 38 Celsius, and a boatload more over 36.
I keep it around 25 C at chez-DrMark.
I heard it was about 47-48 in Phoenix today. "But it's a dry heat" - yeah good, take your dry heat and stick it where the sun never shines..
Allante93 posted:Bored just thought I would share my overheating experiences with Naim.
Funny thing never had heating problems with my LK 280s, and they were tanks, but I must admit, I do prefer the Rich, Thick sound of the Naim's 250.2, combined with the 282, I'm really enjoying it.
However, the flow rate isn't that of an Full Blown LINN Aktiv System, Hence I'm on Naim's Active path!
Passive Bi-Amped Briks with 200 on the Tweeters and 250.2 on the Woofers and Mids, the 250.2 would shut down when worked hard for an hour or so!
But when I switched and put the 250.2 on the Tweeter, and the unregulated 200 on the Woofers and Mids, no heating problem, but it just didn't fit well with me, plus I noticed I couldn't play it as loud, but one really needed to be tuned in, to notice that subtle difference!
This is what Mr. Richard Dane had to say about that:
June 20, 2014 11:09 AM
like 99.6% of power amps out there, the NAP200 isn't a regulated power amp and so when the going gets tough it just lets things slide a bit. A NAP250 isn't allowed to do that, so it has to work much harder (and gets hotter as a consequence). Remember too that there's much more inside a NAP250 - twice the transistor count for one thing. For all that, unsuitable cabling will get a NAP200 hot.
Furthermore:
RICHARD DANEADMINISTRATOR
6/20/14 3:17 AM
it's the thermal trip operating on your NAP250. It shuts down when the temperature of the casing exceeds 70 degrees C.
A few things can cause this: unsuitable cabling or cabling; connection or cable fault; "difficult" speakers with complex crossovers driven at high level; high ambient temperature with not enough air movement for the heatsink (casework) to expel heat.
In the old days with the original NAP250 driving tricky loads like Isobariks at high levels, some owners directed fans at the amps during the summer to keep them cool. The NAP135 brought its own fan cooling, which is also found in the current NAP300.
Furthermore:
Administrator
June 22, 2015 8:48 AM
Yup, it's well worth doing as little as possible to upset the NAP250 re. cabling. Trying 5m per side of NACA5 is a sound plan. The NAP250 was considered the minimum recommendation for passive Isobariks and hard driving at higher levels could every now and then trip the thermal cut-out. Some resorted to running with the NAP250 tipped up on it's edge for better thermal cooling and even using a desk fan to blow on the casework. Others just traded up to NAP135s (with their own internal fans) when they came along or went active, thus bypassing the passive crossover.""
Hence, I sold my 200, and Upgraded from Passive Bi-Amped Briks > Passive Tri-Amped Briks, No more heating problems, but I did purchase two fans to direct on the 250.2, which is driving the Woofers. For those Secessions, when entertaining for more than hour, and really pushing at 10:00 or 11:00.
The other 250.2s, that are responsible for the Mids & the Tweeters are Cool as Cucumbers!
Enjoy your Music, The Why!
Allante93!
thanks for all these precisions. But when i put my hand on my uptone linear ps for the serve, it was very hot. The cisco is ventiling twice a day also( even with air around and on rubber feets).
So i don't want to take risks, just 2 days without music. I will discover again my system in 2 days, with more pleasure.
( my nap 300 dr and 300 ps were not specially hot, just my serve and ps).
Just keep out of direct sunlight. Especially loudspeakers, as the rubber surrounds might perish quicker and wood colour getting bleached.
some boffins have said that air is energised differently by loudspeakers when it is hot and humid, and for the better. Ever notice that music at an outdoor event always sounds better when it's hot rather than cold and damp ? Plus a good excuse to imbibe and become suitably refreshed 
Keler Pierre posted:Allante93 posted:Bored just thought I would share my overheating experiences....
RICHARD DANEADMINISTRATOR
6/20/14 3:17 AM
it's the thermal trip operating on your NAP250. It shuts down when the temperature of the casing exceeds 70 degrees C.
A few things can cause this: unsuitable cabling or cabling; connection or cable fault; "difficult" speakers with complex crossovers driven at high level; high ambient temperature with not enough air movement for the heatsink (casework) to expel heat.
In the old days with the original NAP250 driving tricky loads like Isobariks at high levels, some owners directed fans at the amps during the summer to keep them cool. The NAP135 brought its own fan cooling, which is also found in the current NAP300.
Enjoy your Music, The Why!
Allante93!
thanks for all these precisions. But when i put my hand on my uptone linear ps for the serve, it was very hot. The cisco is ventiling twice a day also( even with air around and on rubber feets).
So i don't want to take risks, just 2 days without music. I will discover again my system in 2 days, with more pleasure.
( my nap 300 dr and 300 ps were not specially hot, just my serve and ps).
Probably a good idea, to shut her down for a couple of days.
However, those small battery operated fans, aren't bad on hot summer days!
Out off curiosity, how often does the fans kick in, on your 300 DR.
Allante93!
For those with a USB port on a music server or suitably close by, they make USB powered small fans (approx. 4 inches) that could be pressed into service for such a time as this.