The DS7 surround speakers are rarely available and for good reason. It has a switchable feature on it where you can select for dipole or monopole operation. If the speakers on mounted on the rear wall, you can select monopole operation where only the front two fronts drivers – bass and tweeter is in operation. If you plan on mounting them on the side walls, you can then select dipole operation where the two side drivers and the main bass driver is used but not the tweeter. In this mode, frequency range is 60Hz to 15KHz whereas in monopole operation the highs are extended into 42KHz. Speakers are easy to drive with a nominal impedance of 8 ohms and a sensitivity of 89dB. Each speaker is about 12″ tall, 15″ wide and 8″ deep and weights about 20lbs.
These speakers made a big difference in our home theater system. The wide throw from these speakers complete the enveloping sound with the front and center speakers for a full scale sound that really elevated the movie watching experience.
Cosmetically, the speakers look good. Minor scuff marks here and there but nothing major. We don’t have the original box but will securely pack them for safe shipping.