Volviendo al tema de la ventilacion, adjunto datos curiosos:
Ver en el video en elos segundos 0:47 al 0:48 el ventilador https://www.youtube.com/watch?v=sacs9vy56VA
Cito respuestas de Behringer al respecto:
" Jan Duwe wrote View Post
Thank you for your valuable comment.
As you have noticed, there are cut outs on the right side of the XR18, which stem from an early design-in for a fan. However, after the design was completed, we measured the temperatures during our mandatory stress and aging tests that run under extreme temperature and humidity conditions.
Furthermore, while not mandatory, we test all our products to meet the stringent safety regulatory standards such as UL, which includes internal and external temperature tests, even under abnormal conditions, such as short-circuits etc.
It became obvious that there was no need for a fan since all temperatures were way below the limits. As part of our rigorous reliability tests, we also ran the X AIR mixers through our extensive life-cycle testing routines, with no issues at all.
With the excellent quality of our X AIR mixers’ preamps and A/D stages (which are identical to the award-winning X32 mixer), we are glad we could avoid the use of a fan, as even subtle fan noise may be picked up by microphones during recording situations. While the XR18 will surely warm up, mostly due to the high-quality high-current preamp and A/D converters, there is no concern in terms of life-cycle or safety testing standards. After all, we provide a 3-Year Warranty program for all our products.
Congrats to your new X AIR mixer and I hope you will greatly enjoy the X AIR journey, while exploring its outstanding sonic performance and feature set. Perhaps you can share with us your experience after having used the unit for a while.
The journey has just begun and I can confirm that the next small update will include an X AIR Edit for Mac and Linux, later this week.
Del propio ULI BEHRINGER
"Uli Behringer wrote View Post
allow me to jump in here, as there are a few misconceptions.
Electronics creates and dissipates heat which is perfectly normal. There are typical temperature ranges that are considered normal in electronics and the X AIR products fall well within that range.
In fact, critical E-caps found in our power supplies and other hot areas, are specified with 105 degree Celsius or 220 degree Fahrenheit.
When you look at semiconductors, they are usually specified at 85 degrees Celsius or 185 degree Fahrenheit. The spec sheet from Analog Devices for a typical DSP provides some clarity.
We do not suggest adding any form of heat sinks onto those processors as the manufacturers does not suggest them and adding mechanical pressure on those highly sensitive chips can potentially cause damage to the ball grid solder joints or rupture the fine traces underneath.
I fully understand your concerns and be assured that we apply some of the most stringent aging and stress tests that allow us to comfortably provide a 3-Year Warranty program on all our products.
Finally, thank you for your great support. It is very much appreciated.
Aparte de todo lo citado, se pueden instalar ventlladores externos, uno metiendo aire y otro sacando, o dos sacando aire, o uno sacando aire, etc, el caso es "que corra el aire" jejeje...... para tal fin se embridan los ventiladoles usando los orificios de las rejillas de ventilacion y los orificios que tiene los ventiladores, se le pone a los ventiladores una fuente de alimentacion apropiada a los voltages de los vetiladores instalados. De esta forma no hay que abrir nada.
Los de Behringer dicen que nao hace falta, pero asi se alarga la vida util de los componentes electronicos, como es el caso de los condensadores electroliticos, ademas que estos alemanes nos saben como aprieta el sol y en calor en España.
Otra problematica es ver las pantallas de los PC y tablets a plena luz del sol, alguna recomendacion de pantallas, PC, tablets, o sistemas "anti sol", pero vamos que a mesas de mezclas de 18000€ (o mas) tambien le pasa lo mismo con su pantallas integradas,