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Old 4th July 2013, 09:39 AM   #1
Domid31 is offline Domid31  France
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Default Interaction class D amplifier and speaker

Hello,

I intend to build an active speaker, with integrated class D amplifier (350 W bridge, based on IRS2092 chip).
As the amplifier will be close to the speaker, do I have to protect it against magnetic field generated by the speaker ?

Thanks for expertise !
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Old 4th July 2013, 10:08 AM   #2
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Magnetic field is not an issue however vibration is!
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Old 4th July 2013, 11:20 AM   #3
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You might want to put some selastic on the larger components to keep them from vibrating loose over time.
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Old 4th July 2013, 03:02 PM   #4
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Good active speakers have an acoustically insulaed compartment for the electronics anyway. But this comes at the cost of increased overall volume.
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Old 4th July 2013, 04:20 PM   #5
gmarsh is online now gmarsh  Canada
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In theory, the magnetic field of the speaker could push the inductors in your amp/power supply closer to saturation.

Provided you keep everything a few inches apart at least, you should be fine.
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Old 8th July 2013, 08:07 PM   #6
Domid31 is offline Domid31  France
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Thanks for your answers.
I already considered vibrations, the amp will be mounted using 'silent blocs' (I do not know if this is good english).
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