Vintage pair of Acoustic Research AR-4x Speakers They were tested and sound great, one speaker is missing the control on the back. The serial numbers are: FX302173 and FX310317. The cabinets look very good they do have scratches from normal use, grills look good, there is one missing “AR” badge from the grills (see pictures for condition). The item “Vintage pair of Acoustic Research AR-4x Speakers” is in sale since Sunday, June 26, 2016. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “boswell1261″ and is located in South Plainfield, New Jersey. This item can be shipped to United States.