Vintage Speakers ESS PS 8 Heil Photo #2566810 - US Audio Mart
Ready for testing… we converted this PS-820 into a PS-920; swapped out the 6” driver for a new 8”, max watt… | Subwoofer speaker, Speaker box design, Audio speakers
RMAF 2017: ESS Labs 40 Years Strong, All Night Long - Part-Time Audiophile