Pair Vintage Acoustic Research AR-4X Speakers. Used, Some corners have nicks. Tested with tablet and heard sound from both speakers though one sounded a but fluttery. 19 x 9 x 10 each, 18 lbs each. The item “Pair Vintage Acoustic Research AR-4X Speakers” is in sale since Sunday, March 05, 2017. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “globaltrader847″ and is located in 60031. This item can be shipped worldwide.