Speakers for Yamaha RX-V375

[vivekayush]

Recently, I purchased "Wharfedale MovieStar 65+ Super" Speaker system. Specifications of its Subwoofer given on the seller's site were as under:

01. Boundary Position:28-170 Hz;
02. Crossover Range: 35-85 (10 Hz step).

However, when I got the product, I noticed that:
a. No Boundary Position was given in its User Manual;
b. Crossover Range was 70-170 Hz in User Manual as well as on the Subwoofer itself;
c. LF Response (fb) was given as 45 Hz in the User Manual.

Can anybody explain:
i. What is the meaning of "Boundary Position: 28-170 Hz"?
ii. What is the meaning of "LF Response (fb): 45 Hz"?
iii. What is the Frequency Response Range of the Subwoofer (if known to anyone)?

Thanks.

 

[Rohith]

Hello pal,
i recently bought my yamaha rx v375 from US purchased on amazon.com. i'm confused whether the rx v375 has a dual voltage switch or do i need a step up voltage converter to witch it on. hope you can help me with this