$599.0 Buy It Now or Best Offer
free,30-Day Returns
Seller Store bonnym1
(105) 100.0%,
Location: Birmingham, Alabama
Ships to: US,
Item: 266889017241
All returns accepted:ReturnsNotAccepted
Speakers:Speakers
Type:Front Right and Left Speakers
Color:Walnut
SDA-II, SDA-2:SDA-II, SDA-2
Connectivity:Wired
Unit Quantity:Pair
Country/Region of Manufacture:United States
The very well regarded speakers….have their place amongst speakers of that era (and quite a following). They were recently looked at by reputed Birmingham speaker repair (changed few surrounds and a mid range speaker was repaired). Everything works as it should. The person I bought it from had one tweeter in each speaker disabled. Apparently it is due to audiophile recommendations on web (do your research please). The disabled tweeters have nothing wrong with them though. After buying, you will have an opportunity to listen to them on certain video call. At that time, you can refuse to buy if you don’t like them. Wood surfaces are NOT perfect. Please do your research before buying. They require high power amplifier. People who have them do swear by them (look for Polk SDA forum discussions). I am selling for local pickup only. After testing, if you do buy them – I won’t be able to entertain any requests for return/refunds. Here is from instruction manual available on line: The principal design goals of the SDA-2 include the reproduction of a much more realistic sonic image. This is particularly important in separating one instrument from another and in recreating an accurate impression of the original hall (or studio) acoustics where the recording was made. Traditional loudspeaker design has focused on frequency response, distortion, transient response, dynamic range, phase, impedance, etc., in an attempt to make the reproduction of music as free from colouration as possible. Various other loudspeaker designs have used combinations of reflected and omnidirectional sound to create an illusion that the sound is not coming from the speakers themselves. While paying careful attention to all of the traditional parameters for good loudspeaker design, the SDA-2 goes much further in making the reproduced sound completely free of the loudspeakers themselves. In doing so the SDA-2 eliminates the problems of acoustic smearing and difficult room placement associated with reflecting or omni loud speakers, while offering all the musicality and detail of traditional systems. In addition it literally opens up a new dimension in the reproduction of music. The SDA-2 achieves these qualities through the application of technology based on a fundamental analysis of the recording process and the hearing mechanism. In order to create a convincing sonic illusion the loudspeakers must first be made to acoustically disappear. The method used by the SDA-2 to accomplish this is deceptively simple and relies on the fact that a listener uses both ears to determine the direction of any sound. Specifically, a sound travelling to the listener from any direction other than straight ahead (or behind) arrives at the two ears at slightly different times. Specifications 2 2A Type: 6 driver loudspeaker system Bass Radiator: 1 x D-1200-A Midbass: 3 x MW 7500 Tweeter: 2 x SL1000 Dimensions: 12 x 16 x 39.5 inches Weight: 80lbs
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