You have gone a bit further than Colonel Sanders for this stretch, Mulester. And you keep ignoring two very important points, here.
1. A sub that is inferior to the quality of the mains WILL degrade the total sound you hear from whatever source, while a sub of superior quality to the mains will not degrade the sound. Yes or no?
2. We are dealing with a
real person, his purchasing budget, and his already-made decision to go with a specific set of speakers. This is not hypothetical stuff we're munching on, here, and we might have gotten a bit off the old train track. Yes? (No is not an option on this one, lol.
)