Now...on to speakers.
Very often, manufacturers use the tower form factor to make their speakers play lower. Just purely from a physical standpoint, a bookshelf speaker is going to have less bass output. It's a smaller box with a shorter port (or no port) and often fewer drivers and thus, less surface area.
The thing is, I am solidly in the camp of using subwoofers to handle the bass and speakers to handle the higher frequencies. I don't see any need for "full range" speakers. In fact, due to the way bass frequencies interact so heavily with the room, I find it BETTER to NOT have full range speakers. It's rare that the best positions for bass are the same as the best positions for proper imaging and soundstage from the higher frequencies. So to me, the better solution is to let subwoofers handle the bass and focus on speakers that play nice and linear and flat down to 80Hz and then have a gradual roll off that will work perfectly with the 2nd order slope applied by any modern receiver in the bass management. The 2nd order slope from the receiver below 80Hz should "cascade" with the natural roll off of the speakers below 80Hz to create something close to a 4th order slope below 80Hz so that you get a nice cross-over to the sub. It's easier said than done
Now, let's look at some speaker options:
- The first one that instantly comes to mind is the EMPTek E55Ti package - available from the Audioholics Store at a terrific price in either
Red Burl or
Gloss Black :
What I adore about the EMP E55Ti speakers is that EMP wisely (IMO) used the larger tower size and greater number of drivers to allow for LOUDER playback, not just lower extension. EMP is a sub-brand of RBH Sound. And like all RBH speakers, the EMPTek speakers absolutely NAIL the midrange.
In terms of speakers that can play LOUD, look amazing, are affordable, and sound terrific, you really can't do any better than these.
You'll notice the very large center E56Ti speaker. It might look a bit out of place in your current room, but it'll be a godsend in a future, large room.
You'll also notice the bi-pole surround speakers. You asked about di-pole and bi-pole speakers vs. regular mono-pole speakers for the surround positions. When you go to the movie theater, you'll notice that there are lots of surround speakers on both side walls, and several on the back wall as well. Surround effects are not meant to be "pin point" accurate the way sounds coming from the front are meant to be. Instead, surround effects are meant to "envelop" the audience and "blanket" them in sound, with occassional discrete sounds that come from "somewhere over there", but not a pin point location. The idea is that you should be aware of sounds coming from all around you, but not to the point that your eyes are drawn away from the screen up front.
Regular mono-pole speakers placed at ear level are too directional. They draw too much attention to themselves in a home theater. And yet, this is what a lot of people want and expect. They want "back" speakers that are really easy to pin point and hear. But that's not really the way soundtracks are supposed to be heard. You're meant to recreate the theater experience, which is many speakers that are high up above you.
Moving monopole speakers so that they are 2-3 feet above your head while sitting and firing across the room, but not directly at the listeners is an improvement for home theaters. But if you really want to recreate the diffuse, enveloping effect from the theater, that's where di and bi-pole speakers come in.
Bi-pole speakers literally act as two speakers instead of one. Both sides of the speaker play at the same time. One fires at a forward angle, the other at a backward angle. So you get sound bouncing around the room and acting more like the multiple speakers from the movie theater.
Di-pole speakers go even further. The two sides fire out of phase. When one side is pushing out, the other side is pulling in and vice versa. This creates a "null" where the sound cancels, right at the mid-point between the two sides of drivers. The idea is that you place this "null" mid-point directly to the sides of the seat so that you are sitting in this "null". That way, you don't get ANY direct sound. All you get are the sounds that first fire forward and backward and bounce around the room. This is the closest experience to the full sized movie theater. But many people don't like such a diffuse sound at home.
Bi-poles are a good compromise and they are very flexible in terms of placement. Just get them up high - about 2-3 feet above your head when sitting. You can have them directly to either side, slightly behind you on the side walls, or on the back walls. They're very forgiving of placement. They'll always deliver a more diffuse sound than monopole surround speakers, but they have no "null"
You'll also notice that you get a subwoofer with this package - and at the package price, you're essentially getting it for free!
You have some options. You could sell that sub to get even more funds so that you can afford a pair of higher output subs. You could use the EMP sub in another room. Or you could just use the EMP sub for now, save a lot of money, and have more money later for that future room!
I like this package a lot for your price range. It's got everything you're after at a price you can afford and the speakers even LOOK great - lol
And since it's me, rather than suggesting even more expensive speakers, I'd highly recommend putting any money you have left in your budget towards room treatments.
For one thing, I consider decoupling a MUST for subwoofers AND tower speakers. It gets debated somewhat - strangely, most often by people who've never actually used decoupling devices. Some folks don't like the Auralex
GRAMMA ,
Great GRAMMA and
SubDude platforms that I most often recommend, simply because they think the $50 price tag is too high. Certainly, you can make your own decoupling platforms for less if you like. Personally, I think $50 is fine, but I can understand wanting to pay less.
Folks should also decouple center and bookshelf speakers IMO. It's rather easy to make TV stands, shelves or speaker stands vibrate and rattle. Decoupling eliminates that. Now I DO think the Auralex
MoPads are grossly overpriced. I also like something a little more secure, so I like
IsoNodes for decoupling center and bookshelf speakers. The claims on the IsoNodes website are ridiculous, but they work great as speaker decouplers
For the rest of your room, focus on bass traps and absorption on the front wall (behind the front speakers) and first reflection points on the side walls and ceiling (see where my screen name came from?
) My favorite
room kits from GiK Acoustics give you everything you need at a great price. I especially like Package #2.
Gik also has terrific
diffusion panels . Put these on the side walls and back walls behind the seating position to really help those surround effects envelop and blanket the listeners in your room!
If you don't want to go for plain, single solid color panels, GiK offers their
"ArtPanel" although they're a bit pricey. For printed panels, the better value is over at
Acoustimac . Acoustimac offers printed bass traps as well, so they're a superb source if you want pictures, posters or art that also doubles as excellent acoustic treatments!