Clearsonic Ipj Roughly 5-Feet Wide By 5-Feet Deep By 65-Feet Highisopac JThe dark gray IsoPac J Vocal & Instrument Isolation Booth from ClearSonic is a 5 (1. 52m) diameter vocal and instrument booth, which works well for isolation of one or more vocalists. It also works for acoustic guitar, string, woodwind, and brass instruments. The IsoPac J uses a combination of clear panels and Sorber to achieve maximum sound reduction. This booth is often used for voice over work, recording, and practice. The IsoPac J consists of 8