Ok, I have a 2001 LS430 and already went though one blown, crackling, buzzing Mark Levinson Sub Woofer. I found a used one on Ebay at a used auto yard and convinced them to send it to me for $50.00 including shipping. (All you do is ask). I had Myer Emco install it for $75.00 and saved me the headaches of doing it myself. Unit worked perfectly for a few years Then the amp went, $250.00 Ebay for an .01rev ML Amp unit and installed it myself in less than 20 minutes. All is well... Then, the sub woofer blew again. Now, I personally keep the bass level low and do not blast the system. Being the inventive person I am, I took off the Sub woofer's grill and inserted some fiberglass insulation to suppress the speaker. It works great, took about 30 seconds and there is no more buzzing that I can detect. What is the harm is there in doing this?? The speaker is blown and awaits the hot glue gun trick if it gets worse. This repair (for a lack of better words) puts no strain on the stereo system whats so ever. Actually, I kind of like the deeper base that comes out now. Even if I do the glue gun repair, I will put the insulation back in the speaker. This causes less strain on the cone because it cannot snap back and forth (frequency response) as easily as it does without it, which causes the crack in the cone to begin with. About 3" of R13 does the trick. Why Lexus puts Mark Levinson in their cars is a mystery, for the price, it is crap for a lack of better words.