Originally Posted by dsrussell
I think there was a misunderstanding in my post. I don't cross over at 60 Hz. I cross over at 80 Hz. But I was talking about the speakers in a 2.0 configuration and my subjective impressions of the quality (not necessarily depth) of bass in my room. If I was curious enough (and I wasn't, because I knew I'd be adding a subwoofer into the mix), I would have run some test frequencies and check that with my dB meter. BTW, my listening position is around 8 - 9 feet from the speakers.
Right. I knew you didn't mean YOU crossed them at 60hz, but I was just further pointing out that 60hz might be a tad too low for these bookshelves. Some have either asked about it or stated they are going to try 60hz or use 60hz. I see a lot of "what x-over should I use" in here and everywhere on these forums. Figured it'd be a good place for those new people getting their speakers after BF and x-mas to hear that there isn't a set place for the x-over for everyone. Too many factors. I'd say that unless you're listening to them relatively quietly and/or in a pretty small room...60hz would be out.
Sorry for the confusion
Originally Posted by Soulburner
I may not be understanding it fully, but that's what I learned based on my research a couple of weeks ago. When a ribbon or planar tweeter is made taller than it is wide, it already has a very limited vertical dispersion. This prevents reflections off ceilings and floors, and gives a very wide horizontal sweet spot. That's why I question the benefits of an MTM configuration with those types of tweeters, but like you I'm not a speaker designer.
Yeah I get what you're saying. I know that's the case, as far as dispersion patterns with MTM (dome tweeters) and that's the case with the planar types of tweeters (Height vs. Width). I figured if Salk and countless others are doing MTM's with the RAAL and other ribbons then I'm sure there's some sort of benefit to it. The most obvious would be higher efficiency and lower distortion
Originally Posted by Elihawk
Btw, my suggesting 55 hz was not based on any measurements and could easily have been 60-65 hz (and my bedroom is absolutely brutal for sound, but hey it is mostly TV anyway)...I just know that I was hearing bass that I hadn't heard from the almost year of occassionally listening to music via the JBL130s. Now, the JBL have 4 inch woofers, so maybe that shouldn't be a suprise...
Anyway, in an awful room with no EQ and very little placement, the e5Bi were able to impress me with the midrange, of course, decent to very good bass (perhaps not lower than 60, but the tuba sounded great) and again in a terrible room, they put out an impressive soundstage and "depth". Hopefully, this weekend and before the superbowl, I will have them mounted in my theater!
Sorry, I thought you meant you had them crossed at 60hz. They'll definitely put out some midbass punch and smoothly at that. I have mine (surrounds) crossed at 80hz since they're semi close to the wall and I don't really need them to go much lower
Originally Posted by tlopes
Any other thoughts on presence speakers and how they may enhance overall sound for movies? Thinking about adding presence speakers just above the screen and aligned with the mains.
Thanks for your thoughts gregoryperkins. Unfortunately I don't have much latitude on sub placement due to room aesthetics and WAF and that is one of the main reasons I opted for two subs instead of one; to minimize the need for the sub crawl and promote better blending with the mains.
Looks nice Tlopes. Wonder how the new sub(s) would perfo........oops. Nvm. Hahah. Seriously though, looks nice. Wish I had a dedicated theater room for a projector. Ugh. First world problems.