초기의 극장용 사운드 시스템
1. JBL AMPEX 5070
2. ALTEC A-800
3. WESTREX
4. ALTEC A-5
5.WESTERN ELECTRIC MIRROR PHONIC
6. WESTERN ELECTRIC 16A
7. JADIS EURYTHME 11
1. JBL AMPEX 5070
2. ALTEC A-800
3. WESTREX
4. ALTEC A-5
5.WESTERN ELECTRIC MIRROR PHONIC
6. WESTERN ELECTRIC 16A
7. JADIS EURYTHME 11