Join Date: May 2002
Location: Brisbane, Australia
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I wanted to post a thank you to Brian and Rythmik for supporting me with a 12" woofer from a kit that I purchased (one of two) that failed when the voicecoil developed a bubble in the aluminium bobbin that the voicecoil wires are wound around. I had not been abusing the driver, it was doing duty in my living room adding a bit more weight to the bass for my stereo speakers and was hardly used, and never turned loud (the one in my home theater gets a solid pounding and has been running fine). It developed a rasping sound which over time got worse.
I initially emailed Brian to see if he could help me diagnose the problem, and Brian asked me to disassemble the woofer and take photos of the voicecoil to look at the cause of failure and to check to see if was abused (overheating - usually shows with scorch marks on the voicecoil, but mine was clean). The aluminium bobbin had a bubble in one spot rubbing against the magnet. I did try to smooth it out and re-attach the cone but this only worked for a month and the rasping came back, possibly because I could not re-glue the spider perfectly and the cone was probably slightly misaligned. At the time Brian did recommend a replacement driver under warranty (it was 2 1/2 years old) but I thought I'd try the fix first to save the hassle of replacement.
When the fix failed, Brian arranged for a new driver and updated servo board (to suit the new driver which is slightly different to the original) to be sent to me from the factory. Brian was very helpful with diagnosing the problem and with organising the replacement, which other vendors may not have bothered with especially as it is easy to abuse subwoofers and void any warranty. The new driver slipped into its DIY cabinet and the daughterboard swap was easy, and the subwoofer was up and running in 20 minutes.
So a big thank you to Brian for his support and to others considering buying a Rythmik, the quality of aftersales is always the ultimate test of a quality vendor so I have no hesitation is recommending Brian and his Rythmik products!
(PS. If you do abuse your subwoofer and it does blow because of an overheated voicecoil, you should not expect the vendor to support you under warranty).