Major Contradiction, Can you replace foam surrounds with Rubber Surrounds on Speakers ???


Hi Guys, I have a major conundrum to decide, and need the experts in the community to help. I have the Wilson Watt Puppy 6's and have 4 woofers that need re-foaming.

 Here's the issue, First, according to Wilson, I had called 2x(at different times) and asked to speak with a speaker engineer, Both times the knowledgeable staff member that answered the phone said that wasn't possible, but would relay any message to them on the spot and get back with me while I hold. My question was: Can you replace the foam surrounds on the Wilson speakers with Rubber Surrounds . After waiting on hold for about 5 minuets, he said "yes, you can",

I Then proceeded to call the well regarded Miller Sound in PA, who is recognized to one of the best in the Industry to do the replacing of speaker surrounds. I proceeded to ask the same question to him, and he said, "No, & that it would change the sound of the speaker and to only redo them using foam surrounds to preserve its original sound quality" . I see no other supporting evidence one way or the other on the net. What do you folks say and please elaborate one way or the other to help me justify my decision. Thank you, Rich
audiofan1

Showing 2 responses by edgewound

Surrounds will not appreciably change the sound if they're of the same...or nearly the same geometry and compliance. Foam and butyl are both pretty lossy when it comes to the cone termination. The moving mass difference will likely be not enough to audibly change the sound. When measuring for moving mass half the weight of the spider and surround are subtracted to get to net moving mass.
Keep in mind that just replacing the foam surround is only half the job. Best practice in most cases is to replace both the spider and surround. The spider is the more critical of the two suspension elements.

Keep in mind that many posting here...and even many repair shops don't really know what they're doing. The workmanship...or lack thereof..is evidence of that.