Would like to get more bass out of my B&W 801 series 2 speakers

@robert53 - Yes, the stock power cord on the amp.   

@porchlight1 - I have heard about this filter, seems the reviews are mixed... most say it improves bass but muds higher frequencies.   Don't want to do anything to foul the existing clarity...    plus the "bass alignment filters" are getting hard to come by.

The JBL added significant midbass to the home theater, it was a dramatic improvement.   Probably what drove my latest "push" to improve music.

Intrigued by this idea of a distributed bass array for music.   

I am going to see what adding power does to the existing setup, but it may be that this space simply demands moving more air.

Think you need to figure the room out before you purchase anything. It's a very big room, looks like your kitchen is behind it? You have everything going against you here. Lots of big windows, high ceilings, hard reflective surfaces. Speakers up on the wall under windows. 

No kidding it's not sounding "perfect". First thing would be to find out where the null points are in the room, then try to move the speakers around so you are not sitting in a null. That alone can double to triple the bass at your listing position. Also move the speakers out from the wall, at least 20in out.

Does the sound change at all when you close all the curtains? 

Then you got to do something with all the windows. Something like this

https://marigoaudio.com/zw-window-resonance-damping-discs/

But might want to try this "cheap" trick to see if you notice anything before you spend thousands of dollars on the good dots. 

https://www.enjoythemusic.com/magazine/equipment/0602/freakazoid.htm#gsc.tab=0

Yes, you need some bass traps, ceiling treatments, and who knows what else. Is there another wall to put all the gear? Looks like you are on the long wall, it might sound better on the short wall. 

Guess what I'm saying, is your gear is all good, think it's 100% the room letting you down. Really if you do some of the above and only get part of the sound you are looking for, just get a sub, it really makes a big difference. If you get one with speaker level inputs, they are easier to integrate and hook up. 

Good luck!

@mswale  -   thanks for your post.    I think the room is driving the issues, but the room is also what I want.    I rarely sit down to listen to music, as much as I would like to.    I spend my days working in and around this space.    My quality of life will improve with what I can do to help the response of the room...    whether it through treatment or the burning of more electrons. 

The main room is 28x32, with the speakers on the 32' wall.    However, there is another 14x28 (open) space/room at the rear of this room, so it is a lazy "L" with one wall being 56'.    There is no other wall where the speakers could be located.    

I owned the exact same speakers as you, the Sound anchors stand's requires you

to remove the plate on the bottom to mount the speakers on the stands.

This raises the speakers up aprox 4- possibly 6 inches  and also gives them a

slight tilt back, I also had the original B&W bass extender that goes into the tape

loop on your preamp, This unit is cheaply made, so I  had the Krell extender

that B&W asked Krell to design for this speaker and contrary to what people are

saying it does make a big difference to the Bass along with useing the sound

anchor stands. Originally the Krell unit sold for aprox $1000.00 but if i see them

now the cost runs between $2000.00- $3000.00 depending on how gready the

sellor is or what they Paid for them. I would recommend Getting the sound anchor

stands designed for these speakers as it lifts them up aprox 4" so the Twitter is at

aprox ear level when sitting in a chair. But I would wait untill you tried the higer

powerd amp to see, as I was driving them with a older Krell 600 wpc amp that

weighed 200lbs to see if you notice any changes in the Bass extension, before

starting down the road to be making changes to your system, also the speakers

were aprox 2 feet from the wall. They were also in my great room, where the ceiling

started out at 8' and ran up to 22' high on a 32 foot wall as I have a fireplace in that

room.

This fixed all my problems with the bass. Ihave since moved on with a newer 

system but this is what I remember when I owned the B&W 801 series 2 speakers.

Hope this gives you some more clarity on your system. Good Luck !