Magfan, Good to know where it originated. Love movie quotes.
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Magfan, good catch! http://en.wikipedia.org/wiki/Stinking_badges My feeling re the original question: http://en.wikipedia.org/wiki/Don't_Worry,_Be_Happy http://www.youtube.com/watch?v=yv-Fk1PwVeU Best regards, -- Al :-) |
This thread has been discussed many times. There are several ways to go here. First, basic engineering will tell you that unless it is absolutely necessary, you never leave this type of equipment on all the time. Components will defintely wear out much quicker with heat and time on. Manufactures will install fans only if it is cost effective for them to do so. Each piece of equipment is designed and constructed and sold at a particular price point in competition with other components at that same price point, much the same as computers and cars/trucks. A Mercedes SL600 is most definitely not the same as a Toyota. The same holds true for high end audio equipment. Also, unless the manufacturer is a goverment contractor for military usage, they will not perform failure test on equipment. Again, it is not cost effective. They won't test to determine the failure rate or how long leaving equipment on will take it to fail. It just won't happen. Some may adjust bias or add fans or elaborate heat sinking to dissapate the heat if necessary. Again, building to a price point and some of this may not be cost effective with the competition. If you want to leave your equipment on all the time, talk with the manufacturer and go for it. However, it is not necessary. Depending on your listening style. you can turn your equipment on an hour or so before hand and you would be good to go. But, to each their own. If sound quality is important to you during playback, then try an experiment. Pick some music. Turn the equipment on two hours before hand and listen. take notes. Next day, turn it on one hour before hand and listen. Take notes. and then leave it on for an entire day, then come back and listen, take notes. Compare notes. I would be very interested to hear the discussion on the differences. Also, it would be extremely unwise to leave tube equipment on all the time. Tubes have a very finite life span and you will wear out your tubes very quickly if they were left on. Very expensive endevour. Enjoy |
"Noooooo! it does not draw 75A p-p all the time! The amp specs might say that it is capable of supplying 75A peak but the amp does not do that unless the load requires it. The 75A peak is just the max capability of the power supply transformer & capacitor bank to supply that much current. it runs warmer to the touch 'cuz the bias is on high(er) side (to perhaps make it run longer in class-A before switching over to class-AB)." Bombaywalla, I am very aware of that fact but wanted to point out that because of the temperature difference of the (2) B&K amps I own. They both have very limited space above them in my rack so I felt a fan was only necessary for just the one amp that operated at a higher temperature. I don't know if it is better for the amp to use a fan to draw away excessive heat or not but I feel better about it due to the age of them(12+ years) and to protect my other components. Bill |
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