Ok, so its easy enough to get to, but I had poor results muffling the sound with random things I had laying around my house/garage. I tried dense foam, not so dense foam, plastic, an old cut up sock (lol), and paper towel. The Paper towel had the best results muffling the sound by maybe 10%. So I'm up for ideas in terms of different materials, and I'm also going to give it some more thought on what could be done on the electrical side. But this speaker is also what emits the audible "click" for the turn signals, so whatever is done will affect the turn signal "click".
For anyone up to the challange,
To access the speaker you need a ratchet/driver, 7 and 8 millimeter socket and an extension at least 4 inches long. A flash light and a telescoping magnet pen also helps but not necessary. There are a total of 6 screws that must come out using the 7mm socket. The rest is held together with plastic fasteners that come apart by hand/force. Before starting this it's a good idea to disconnect the battery (8mm socket), so when the cluster is disconnected/reconnected electrically, there won't be any surprise smoke shows. It's very unlikely to happen, but better safe then sorry.
First tilt the steering wheel all the way down to help ease both the bezel and cluster out. Two screws attach the bezel to the dash. They are located at the top of the bezel and point upwards.
Once the screws are removed, grasp the lower corners of the bezel and gently tug untill the clips release. There are several clips lining the bezel, so just work your fingers around untill the whole thing is free. Getting the bezel past the steering wheel takes a little creative wiggling.
Once the bezel is removed, 4 screws hold the cluster to the dash. Two up top and two (one at each corner) on the bottom. This is where the extension comes in. The telescoping magnet and flash light helps here to retrieve the loose screws. (The screws in all these pictures are already removed)
There is only one connector that must be un-done. There is one tab in the center of the connector that must be pressed in order for the connector to release. Once the screws and connector are removed, more creative wiggling must be done to get the cluster past the steering wheel. Start by slidding the bottom of the cluster down and out, rolling it out towards you.