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Rogers 5/8 - vibration problems

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Rogers 5/8 - vibration problems

Postby CeruttiA » Wed Nov 28, 2018 3:19 pm

On loud volumes the back wall of the Rogers vibrates a lot, especially of course where the base unit is. What can i do ? Add additional sound absorbing foal to the inner wall, but then again i do not wish to change the speaker’ character too much.
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CeruttiA
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- passionate by sound. Equipment: Rogers LS 5/8 / Audio Research SP11

Re: Rogers 5/8 - vibration problems

Postby Hugh Robjohns » Wed Nov 28, 2018 4:21 pm

The LS 5/8 has a 'thin walled' cabinet which is designed to vibrate to a certain extent -- part of the LF energy intentionally comes directly from the cabinet itself.

So the question is whether your own speaker cabinet is faulty in some way -- perhaps the corner joints or internal bracing have become loose over time, or the internal bitumen damping pads have worked loose or have dried out and become brittle -- or if you are driving the speaker harder and louder than it's intended working range.

As you say, adding more internal damping will change the characteristics of the speaker, but it might be worthwhile checking to see if the internal damping pads are still effective.

H
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