Monitor 10

FYI, Polk didn't make the 10B in 1976. It was the 10 then 10A.
Sbilderb, I think you are suffering from some type of social isolation. You thought Doro, TroyD, or other members commenting on your posts were threatened and claimed to know more than everyone. It is impossible for you to understand and measure the scope of who these people are and the amount of knowledge that they have accumulated over their lifetime by a few posts on this forum. To claim you know more than them when you don't know them is completely irrational as are your suggestions. You basically changed the whole composition of the way the speakers were intended to sound. Doro pointed out the flaws of what you were saying plain and simple. It is completely natural for you to defend your sinking ship as your claims don't hold definitive water. I don't think you realize that you are swimming at this moment because Doro just sank your battleship! I think your speaker mod suggestions are in line with mine. I rewired my SDA 2A's with heavier wire and pulled out some of the polyfill and made an exaggerated claim that my speakers sounded better. I also replaced my original MW6510 drivers with the MW6503 driver because the MW6503 drivers were the ones from Polks TOP SDA SRS speaker. The MW6510 and MW6503 drivers at different times went in cabinets of the exact same size and were always matched with the same SL2000 tweeters. Now the crossovers probably aren't matching for the MW6503 to blend with the tweeter in that SIZE cabinet that they are in. The crossovers are set to blend with MW6510, but I emailed polk and found out that the difference between the MW6510 driver and the 6503 driver is very small. Ken said they have different motor strength and the MW6503 goes 2Hz lower than the MW6510. It is apparent to me that the motor strength of the MW6503 driver is higher than the MW6510. Anyway, motor strength and the FR were the two things that needed to be the closest for my 2A's to sound right. Even though the difference is so small the bass sounds much deeper to ME. My friend who is very subjective also noticed the bass improvement. I can have the bass set to zero like it should be and have more bass than the MW6510. I could distort the bass to +8 or +10 with MW6510 and still not hear the amount of bass I hear with the 6503. The difference SEEMS to be night and day. I like the midrange better too. Which brings me to my polyfill adjustment in which I cut out some of the polyfill and rolled it up in a block shape to have the upper cabinet evenly filled just above the drivers. I also put a square piece at the base of the cabinet. The rest of the cabinet is empty so there is none behind the drivers and so on. Before that the cabinet was filled wall to wall with polyfill. The drivers were blocked off from the passive radiator. I was wondering how the passive radiator could absorb the sound from the drivers with being completely blocked off from them with the polyfill? The PR is still relieving the cabinet pressure from the drivers otherwise it wouldn't be moving. The polyfill IMO muffled the midrange. It was like I had a pillow over the drivers. My Monitor 7C's and 5 JR++ came with the polyfill just above the drivers and none behind or below the rest of the cabinet was empty. This isn't what gave me the idea though. I just wanted the sound to be forced down to the PR of my SDA's.

All of this is an example of individual perception.
We all are looking at the same things and have to learn and remember them. That is the basics of learning like your a-b-c's
are all of the building blocks of words that we use to form English
weather it be good or bad. The extent of your vocabulary is the
extent of your communication level and how much you understand as a whole. Their is a specific way of looking at things and everyone looks at them different due to their upbringing and environment as well as genetics. All things aside from the real facts are a matter of opinion. Some people form irrational opinions around their lack of facts. People can fear something because they don't understand it. That is why they say , "fear is not an option" because fear destroys all options. If you were driving a car and heading toward something and all you had to do was go left or right and instead chose fear as your option and in a state of panic made no decision to go left or right you would crash the car. Lets hear it for fear the option killer!!! The Option less option! So my lack of understanding and inability to see the facts of how my speaker is working has formed my silly opinion. I told Doro to replace his polyfill in his SDA's with underwear and socks. His mistake was putting DIRTY underwear and socks in his SDA's and it made his sound muddy. I told him he should do that laundry and it would clean up his sound. Just a little bit of an inside joke!