I need information on my home theater

Hi everyone,

First of all, english is not my first language so i'm sorry if my text is hard to read.

I need help to find more specs about some part of my home theater system.
The first piece is the sub made by Acoustic profiles, i heard this was made by audiosphere in canada but the company dosent exit anymore.
The only info is : sub power module model ap-a120 and rms-1200.sub

Second part are 2 speakers (3 way)made by Yamaha model: ns-30x
I knon they are old but the sond is realy nice.

Third part, 2 speakers B&W dm600 s3 but i have all the info on this

The center is made by Energy model XL-C100
I got all info on this one

Ampli is a Yamaha rx-v550

I need more info on the sub and the pair of yamaha speakers and i also like to know the resale value of all the system. I'll be realy happy if you can help me.