2
3.2. Notes -------------------------------------------------------- 10
3.3. Different Points ------------------------------------------- 11
4 Specifications ---------------------------------------------------- 14
5 Block Diagram --------------------------------------------------- 15
5.1. Main Unit (SU-HTB550) -------------------------------- 15
5.2. Active Subwoofer (SB-HWA520)--------------------- 19
6 Schematic Diagram--------------------------------------------- 20
6.1. Main Unit (SU-HTB550) -------------------------------- 20
6.2. Active Subwoofer (SB-HWA520)--------------------- 26
7 Printed Circuit Board ------------------------------------------ 29
7.1. Main Unit (SU-HTB550) ------------------------------- 29
7.2. Active Subwoofer (SB-HWA520)--------------------- 33
8 Exploded View and Replacement Parts List ----------- 34
8.1. Exploded View and Mechanical replacement
Parts List --------------------------------------------------- 34
8.2. Electrical Replacement Parts List-------------------- 41