[billb]

I had a similar problem on one of my BS9000s and it turned out that the cable from the keyboard had come loose at the PCB connector (PCB 3, connector P13) or it might have been P71 on PCB13 (secondary keyboard) but I think it was P13 on PCB3.

Good luck,

Bill

[billb]

Hi,

The foam material does breathe. The sound absorption is greater the higher the frequency, so the base port should be getting all the lower frequencies. I have changed the foam damping in my BL8000s to the updated version a number of years ago. The base response was not impacted. I use a pink noise generator along with a real time spectrum analyzer to adjust my system to be as “flat” as best I can. The lowest frequencies needed to be turned down a bit to get to “flat” response.

I think the foam materials and location info provided by B&O are just fine to use as-is.

Bill

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