Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 6 replies
  • Subscribers 21 subscribers
  • Views 979 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Active Loudspeakers.

Zoomup

Dad, these active loudspeakers seem to have loads of stuff inside them, and I reckon that they will overheat with long use and perhaps break down, because of inadequate ventilation. What do you think?

https://www.youtube.com/watch?v=CyhyuWqCLxQ

Z.

  • 0

    Nah,

    These have been quite common in the Rock'n'Roll touring world for a while.

    They often have largish heatsinks on the rear to dissipate the heat from the active components.

  • 0 in reply to AdrianWint

    There are many repair videos on Youtube son where the internals have failed. If the active speaker is installed in a difficult place it may be awkward and expensive to remove it for replacement of repair.

    www.youtube.com/watch

  • 0

    My reading of this is it isn't quite so simple as electronics in a sealed box.  The two black rigs on the back above the heat sink are bass ports and these are open to the inside of the cabinet and the outside air.   When the speakers are operating air will be puffing in and out, and will to some degree provide ventilation by virtue of the pressure variation within the cabinet.  The heatsink provides cooling to the power amplifier.

  • 0 in reply to davidwalker2

    I don't reckon that the puffing air, in then out etc. provides any cooling at all. Also the large power supplies needed create large amounts of internal heat. I think that the design is flawed.

    www.youtube.com/watch

    Z.

  • 0 in reply to Zoomup

    No Z, they work just fine. You need to remember these are class D amplifiers, so do not dissipate much heat as they are very efficient, and the power supply is a switchmode type so again very little heat. The dissipation of one of these is probably only 100W, even though the amplifier may produce a kW or more RMS. Technology rules! Failures of reasonable makes are very rare, and they monitor the temperatures anyway and will reduce power if a problem is detected. They are all networked with Ethernet so report the status continuously to the operator.

  • 0 in reply to Zoomup

    No problems, as yet - after 6 years, with my very compact Sonos play 1 active speaker setup. It booms out all around the house. when given some input.

Community Rules & Guidelines