Subwoofer failure


This morning after everyone was awake I put on Fiona Apple's Tidal record. The very first song, Sleep to Dream has a very loud recurrent low synthesizer note. Everytime it stuck there was a belch in the center field of the system. It turned out to be coming from one of the center subwoofers. These are Dayton Titanic III's and have not been made in years. The current version which uses the same basket has different parameters. Sh-t. 
So, I pulled the driver and sat down with a cup of coffee at the kitchen table with the driver. Everything looked fine and the excursion was smooth and quiet. The surround was in perfect shape as was the spider and lead out wires. Out of frustration thinking I would have to replace all four drivers I started tapping on things. When I tapped on the dust cap I got a mini belch! I ran a finger nail under the seam and sure enough it had detached around 1/3rd of the diameter. I ran a bead of medium viscosity cyanoacrylate glue around the detached area and it sucked it right up. Driver reinstalled it was back to normal. 
Subwoofer drivers have a very aggressive lifestyle and they can fail in many ways that can be easily fixed. This is just one example we can store in memory. 
Anybody else have a subwoofer driver failure? 
mijostyn

Showing 1 response by noble100

Hello oldhvymec,

     I respect and applaud your efforts of experimenting with bass reproduction systems in your room and system in order to optimize bass performance. 
     As I believe you're aware, I also utilize the DBA concept in my room and system, but employ it in a more basic manner through an Audio Kinesis Debra 4-sub complete kit DBA system.  My main speakers only go down to 35 Hz so my simple application of the DBA concept is to just have the 4 DBA subs reproduce bass below 40 Hz and down to their combined rated bass extension of 20 Hz,  
     This combination, of my mains reproducing all the bass down to 35 Hz and the 4-sub DBA reproducing bass below 40 Hz along with a slight overlap and redundancy between 35-40 Hz, has been perceived by myself as providing very good and well integrated bass at my main listening position.  I perceive no need for supplementing the bass in the 60-300 Hz range that I'm assuming the use of your 'bass bins' are providing. I also have no difficulty setting up the A K Debra 4-sub DBA and dialing in the bass in a matter of a few hours, not years.
     Just to be perfectly clear, I have absolutely no doubts that you are perceiving very good and well integrated bass at your main listening position with the combination 'bass bins' and subs bass system you've built and utilize. 
     My primary reasons for posting are curiosity and a better understanding of why and how you perceived a need for these 'bass bins' initially.  For example, do your main speakers lack the ability to provide good perceived bass performance in the 60-300 Hz range at your main listening position? 
      Or do you perceive the enhancement of bass in the 60-300 Hz range at your main listening position, resulting from the deployment of these 'bass bins', as being beneficial in some ways to your system's overall sound quality or listening experience? 
      I'm just curious about whether you use them to achieve bass accuracy or bass enhancement?  And if you use them for bass enhancement, what benefits do you perceive?  I'm suspecting that using your 'bass bins' may result in improved bass detail and sound stage imaging.

Thanks,
   Tim