Originally Posted by LTD02
this is incorrect information.
Unlike you I have hands on experience with the DDS-ENG. Should you choose to explore a little further than simply reading a few forum posts, you'll find companies like Emerald Physics have evolved from the generic 12" WG to using the DDS-ENG in their most expensive speakers. Wonder why???
As I type this I'm listening to DDS-ENG waveguides paired with the B&C DE250's. I've also used them with the BMS 4540ND. And unlike the 18Sound XT1086, the DDS-ENG don't have a characteristic horn like sound.
edit: janowitz had ordered some for use in a kit on which he was working. the fabrication was of such poor quality, the waveguides were deemed "unusuable".
Janowitz ordered a single pair and decided against using them based on problems with that particular pair. Had he exchanged them instead of posting a knee-jerk reaction he would have received a usable pair.
if you want something relatively inexpensive, but with great performance, have a look at the "econowave" over at audiokarma. it is a jbl waveguide that you can purchase from their pro parts group for $10 and a selenium d220ti driver that you can get for about $40 from parts express. crossover details are provided as well.
I have 2 pair of the JBL Eco-waveguides. The build quality isn't all that great, and they don't sound good even when paired with a high quality compression driver.