AR-4x

The Acoustic Research AR-4x is a vintage bookshelf speaker that was produced by Acoustic Research in the 1960s. It is a two-way speaker system featuring a 1.5-inch dome tweeter and a 6.5-inch woofer. The AR-4x is known for its high-quality sound reproduction and solid build construction. It became popular among audio enthusiasts and collectors due to its warm and detailed sound signature. The speaker has a walnut veneer cabinet and a removable acoustic cloth grille. Overall, the AR-4x is considered a classic vintage speaker.