Buhayin ko lang itong thread na ito for those who are still loving their Diamond 9 Series
and I like to share my repair and small modification with my Diamond 9's.
After more than 9 yrs the sound coming from the speakers suddenly got distorted and noticed some of the woofer's rubber surrounds got partially ripped off and what I did to prevent its "self destruction" is that I applied small amount of Mighty Bond Extreme w/c is impact resistant and more flexible and do not use the yellow one, it is brittle and turns white when dried, apply it around the rubber surround using a flat precision tool...
Allow it to dry
Install it back to its case
after a few days it will dry up like this
I did the same procedure with DFS surround speakers.
Rubber surround's flexibility and speaker performance won't be affected by glue as long as it is applied around the rigid area only.
Also upgraded ALL the stock laid-back silk dome tweeters to a more aggressive yet smooth as silk dome tweeters.
Got these from Amazon.com
Now they all sound great again and prevented the rubber surrounds from ripping apart.