AR-4xa / AR 4. Pair / vintage speakers. AR-4xa speakers retrofitted with drivers from AR-17/AR-18 speakers (equivalent internal cabinet volume). Installed AR#5 inductor to smoothen upper woofer response. Refinished cabinets, treated with Watco Danish Oil. Cabinet serial numbers FX-228650 FX-149256. In excellent condition cosmetically — please see all pics. Check these speakers out by visiting us at Infinity Records in Massapequa Park. Price will be lowered in store.