Good day tsikoteers.........after waiting for a long time magka-budget, nakabili din ng AVR and speakers

3 questions lang po

1. sino po ba gumagamit dito ng Monster THX speaker cables? alin po ba ang positive and negative? di po kasi colored and halos parehas lang yung wires except may marking yung isang half.

2. kailangan po ba talaga ng separate subwoofer power center? di ba pwede isama na lang i-plug ito sa power surge protector?

3. after connecting all speakers.......walang sound na lumalabas, sa setting ba to ng AVR o tama yung sinasabi nung mamang tindero na kailangan ko ng optical digital audio cable from the source to the AVR?

eto po ang aking set-up but not yet operational

Sony Bravia LCD HDTV “40
Sony CD/DVD Player
Harman/Kardon AVR 146
Polkaudio RM6750

Cables:
Monster HDMI Advanced High Speed 2m
MonsterBass 300 Subwoofer Interconnect 1.83m
Monster Standard THX Speaker Cables

Monster THX Digital Fiber Optic (?).........or anything else I need?

thanks in advance!!