How different between B&W 804s & B&W 805s????

I have the N804 in a second system and the N802s in a reference system. I have also owned the 602 Series 3 speakers.

Before I picked the N804 I auditioned the N805 in my house for about two weeks. This was many years ago. The N804 is fabulous speaker. I think it is better than the N805 in every way. This was some time ago but I remember making a serious inquiry into whether the N804 was just a bigger N805 and the conclusion I came to was that in addition to the larger cabinate and lower range, the tweeter, midrange and crossover units were supposed to be better. It is not just a taller N805.

If you like your N805, you will probably like the N804 better. Basically, the sound of the 804 is a fuller 805. The difference is not insignificant, however. More bass is always significant.

Let me tell you what the problems with the 804s are. I have used them for 10 years, and I know them well. This is totally subjective. They are absolutely unforgiving when it comes to revealing the source. You NEED warm, refined components with these speakers. They are not inherently bright, but they can be quite hard on the ears with bad recordings.

Another problem is that, even though the 804 is a lot fuller than the 805, which only goes down to 49Hz, the 804 only goes down to 38Hz. This is a big improvement over the 805, however, this is not the type of speaker where you are going to simply call it a day and be happy that you have enough bass. At some point, after the honeymoon wears off, you will want even more bass. The 804 is a little lean in that sense, and you will eventually run into the same issue you are having now with the 805.

For that reason, I do not recommend the 804 as an upgrade from the 805. If I were in your shoes, I would save for the less compromising 803S, which gets down to 35Hz and in my experience is a more satisfying speaker. I feel like, since you have been compromising on bass for so long with the 805, you should move to a bigger floorstander than the 804.

I love my 804s--everything they do they do very well. They simply do not go deep enough in the bass for them to be an endgame solution.

Let me supplement my previous response by also saying that the 805, 804, and 803 are very demanding speakers when it comes to components. You can never good wrong with upgrading your front end components before your speakers, especially when you have speakers as good as the 805s.

The 805 is good enough that you should get the benefit of every component upgrade you make. I am thinking that the 805, the 804, and the 803 probably "max out" at around the same place.

With that Marantz, you are not even close to realizing what the 805 can do with respect to resolution and imaging. Not by a long shot. So you have to figure out what your priorities are. If you want to hear more midrange and high-end information, better stereo imaging, and a more refined sound, your 805 can absolutely do that for you but you need a better amp/preamp or integrated amp. If you are happy with the sound you have now but want deeper bass, the speaker upgrade will do that for you but it would be a parallel move in other respects.

There is no doubt that you should eventually do both, the question is, what kind of improvement are you looking for with your next move?

The rabbit hole gets very deep at this level.

Blackstonejd: Nice post. First, the 602S3 was a great speaker - I have a pair in my second system and I would not part with them. Second, I agree that the 803S is a large improvement over the 804. Indeed, the next step up in my opinion is not the 803D, which I found to have poor integration between the drivers, but the 802D. As to the driving electronics - absolutely agree. B&W's like current.

Blackstonesjd : Thanks for your post, it very helpful but i think i'll stay with 805s (Or may be upgrade 804s) because my room is small, it's only 12spm (3x4). 803s will be too big for this room. I'm going to buy a new McIntosh 6600 soon and find out what 805s can give first then upgrade the speakers later.

I think that is the right way to go. Please let us know what you think of the 805 with the new amp.