The JBL family of acoustical lenses was originally designed for stereophonic audio systems for motion picture theater applicatio
![JBL 2390 (2309 and 2310) lenses and horns -- Los Angeles area sale only Photo #2767805 - US Audio Mart JBL 2390 (2309 and 2310) lenses and horns -- Los Angeles area sale only Photo #2767805 - US Audio Mart](https://img.usaudiomart.com/uploads/2020/06/5/649632425_thumb_b5b7bd404d9d7c5fa5290b506744d103.jpg)
JBL 2390 (2309 and 2310) lenses and horns -- Los Angeles area sale only Photo #2767805 - US Audio Mart
The JBL family of acoustical lenses was originally designed for stereophonic audio systems for motion picture theater applicatio
![JBL 2390 (2309 and 2310) lenses and horns -- Los Angeles area sale only Photo #2767803 - Canuck Audio Mart JBL 2390 (2309 and 2310) lenses and horns -- Los Angeles area sale only Photo #2767803 - Canuck Audio Mart](https://img.usaudiomart.com/uploads/large/2767805-d7a4f692-jbl-2390-2309-and-2310-lenses-and-horns-los-angeles-area-sale-only.jpg)