MeloManiac Posted June 16, 2021 Share Posted June 16, 2021 Europe is dealing with a (mild) heat wave (+30 °C). I once had a gaming pc graphics card fail due to a heat wave. So is it safe to play music when the temperatures are up? My Leben CS300 is like a convector. Nice in winter, but not so in summer... Amp temp getting close to 40 degrees C. It now has reached 41.1 degrees C. 1 Quote Link to comment Share on other sites More sharing options...
Bubo Posted June 16, 2021 Share Posted June 16, 2021 Get a silent USB 70mm fan blowing down into the unit and use it every time use the switched outlet on the amp or other device Update, the 140MM are the ones I like. Yes Heat Kills 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted June 16, 2021 Share Posted June 16, 2021 A little AC... Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted June 16, 2021 Share Posted June 16, 2021 I use USB fans as well, even in an air conditioned room. 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted June 16, 2021 Share Posted June 16, 2021 1 hour ago, MeloManiac said: Europe is dealing with a (mild) heat wave (+30 °C). I once had a gaming pc graphics card fail due to a heat wave. So is it safe to play music when the temperatures are up? My Leben CS300 is like a convector. Nice in winter, but not so in summer... Amp temp getting close to 40 degrees C. It now has reached 41.1 degrees C. remove the top cover and verify the temp again , does it lower ? - letting the air flow naturally is the idea here , versus adding forced air cooling - Quote Link to comment Share on other sites More sharing options...
KT88 Posted June 16, 2021 Share Posted June 16, 2021 Is a tube amp heat sensitive? The tubes get much warmer than 40 degrees C anyway. Or does the Leben amp also contain semiconductors which could be heat sensitive? At least we are still far away from solder becoming liquid or the amplifier housing bending. Quote Link to comment Share on other sites More sharing options...
AndreG. Posted June 16, 2021 Share Posted June 16, 2021 I have two of these on my Marantz: https://www.amazon.de/AC-Infinity-MULTIFAN-Receiver-Playstation/dp/B00MWH4FL4/ref=sr_1_6?__mk_de_DE=ÅMÅŽÕÑ&crid=K8XDUL0NLV7B&dchild=1&keywords=ac+infinity&qid=1623865716&sprefix=ac+infinity%2Caps%2C240&sr=8-6 This solution may not be very asthetic on Your Leben, but it helps to get some more ventilation. Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted June 16, 2021 Share Posted June 16, 2021 4 hours ago, AndreG. said: I have two of these on my Marantz: https://www.amazon.de/AC-Infinity-MULTIFAN-Receiver-Playstation/dp/B00MWH4FL4/ref=sr_1_6?__mk_de_DE=ÅMÅŽÕÑ&crid=K8XDUL0NLV7B&dchild=1&keywords=ac+infinity&qid=1623865716&sprefix=ac+infinity%2Caps%2C240&sr=8-6 This solution may not be very asthetic on Your Leben, but it helps to get some more ventilation. Exactly what I use, although not in German...... 1 1 Quote Link to comment Share on other sites More sharing options...
GriffinFL Posted June 17, 2021 Share Posted June 17, 2021 10 hours ago, Bubo said: Yes Heat Kills Living in FL and running tube pre and power amps into my Belles, you're scaring me. Define "Heat" in this situation. What level of "heat" starts doing actual damage to the tubes (or other components, for that matter)? Quote Link to comment Share on other sites More sharing options...
Subway Posted June 17, 2021 Share Posted June 17, 2021 Years ago I used infrared thermometer when I thought output transformers were running hot. If tubes are biased correctly and not "red plating" I've never thought about it. Possibly operating temp on tube data sheet. Bob Carver sells (current production) "cool running" tube amps which I find intriguing (video of him discussing these amps online). https://www.bobcarvercorp.com In fact, they are the coolest running tube type amplifiers in history, allowing you to actually touch the tops of the mighty KT120's and never be burned! While we caution against grabbing the sides of the output tubes (they must be hot to function), the internal temperature of our amplifiers is a bit warmer than the inside of your mouth, resulting in an indeterminate lifespan. ------------------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------ Vacuum Tube Plate Temperature vs Performance In Audio Power Output Tubes.wmv - YouTube ElPaso Tube Amps In working on vacuum tube amplifiers, just for fun, I started measuring the temperature of the output tubes with an IR (infra red) thermometer with a laser pointer. Much to my surprise, I think it has real value. I have measured a number of tubes and there seems to ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ----------------------------------------------------------------------------------------------------------------------------------------------- Welcome to the Home of The Bias King™ Quote Link to comment Share on other sites More sharing options...
tube fanatic Posted June 17, 2021 Share Posted June 17, 2021 I have never used air conditioning and my listening rooms have often hit 90F during the summer. It has never been an issue. Considering the fact that electrolytic caps are typically rated for at least 85C it is not likely that they will be damaged if run on the hotter side for a few hours. Resistors are even more heat resistant. And remember that the under chassis temperatures will be lower. Maynard Quote Link to comment Share on other sites More sharing options...
Shakeydeal Posted June 17, 2021 Share Posted June 17, 2021 We are not neanderthals. Crank up the AC and live like a king! Shakey 1 Quote Link to comment Share on other sites More sharing options...
henry4841 Posted June 17, 2021 Share Posted June 17, 2021 Worry about something else. Tube gear reigned before air conditioning became prevalent in homes. 1 Quote Link to comment Share on other sites More sharing options...
Bubo Posted June 17, 2021 Share Posted June 17, 2021 42 minutes ago, Shakeydeal said: We are not neanderthals. Crank up the AC and live like a king! Shakey Most of Europe does not have or use AC NYC is the same latitude as Rome, most of Europe is at Canada Latitudes 1 Quote Link to comment Share on other sites More sharing options...
Bubo Posted June 17, 2021 Share Posted June 17, 2021 58 minutes ago, tube fanatic said: I have never used air conditioning and my listening rooms have often hit 90F during the summer. It has never been an issue. Considering the fact that electrolytic caps are typically rated for at least 85C it is not likely that they will be damaged if run on the hotter side for a few hours. Resistors are even more heat resistant. And remember that the under chassis temperatures will be lower. Maynard When I worked in high tech electronics that went into refrigerated bunkers, every unit had it's own fan, plus the fans the customers would mount on racks blowing into the gear, all solid state. Quote Link to comment Share on other sites More sharing options...
Shiva Posted June 17, 2021 Share Posted June 17, 2021 Heatwaves are the perfect time to break out your Class D or T integrated amps, for cool running music listening sessions, without putting any heat into ones room, or worry into ones mind. That's what I've done over the years. On the other hand, I posted a vid some time ago about how hot tubes get. In the vid, his power tubes in normal operating mode are reaching 280 degrees, or for you guys over the pond, that would be around 137 celsius. For anyone wanting to see some of the readings, just skip ahead to around the 5 minute mark. 1 Quote Link to comment Share on other sites More sharing options...
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