audiodave

Jon, I have a pair of Duntech DL-15B speakers. They are as close to a perfect speaker as I have found. Very tight well defined bass. Great low end and very controlled. No wallowing overshoots like most subwoofers have. They are accoustic suspension (sealed box) and give up efficiency for accuracy. 100W per channel is the minimum power you need. I drive them with a Crown D150A. The stereo image is very accurate because of the foam that prevents reflection of waves from the hard wooden box. The original paper dome tweeter has a soft horn made of putty that is applied to it that further directs the highs without reflections. The foam does not cover the tweeters. It is used to shape the dispersion of the high frequency energy in the near field. These speakers were designed by engineers that used radiation and reflection theory to time align the 3 speakers and also to control the dispersion for very accurate sound reproduction. The shop that replaced your drivers had no idea how these speakers were designed and how to restore them. What a shame. I have replaced the surrounds on the woofer cones as they have deteriorated over the years. They still sound great. They were designed for two pair to be stacked. The top speaker upside down so that the tweeters are close together This was known as the double duntech and were absolutely Awesome!!! I have the manuals for these and can send you a scan if you are interested. Dave Mackenzie Wilmington, DE davemack(at)udel.edu