I ordered two MBM-12's to play the "hard to reproduce" (and soooo sweet sounding) mid-bass SPL's to blend with my sub and mains/surrounds. I'm looking for full range, high-end fidelity reproduction that goes up in a linear relationship as I adjust the main volume.
Here's HSU (great support) recommendations: I can hook MBM-12's up several ways and am looking forward to playing with different ideas/placements.
1) Leave the RF-7 front main signals at full (large - I will experiment with small, too). Connect the MBM-12's to the L/R speaker leads next to the RF-7's. Set the LFE low pass to my sub around 40-60 Hz. Set the MBM-12's to 150 low pass. The Klipsch's and MBM-12's both blend to reproduce 50 to 150 Hz together. Below 50Hz goes to the sub. The RF-7's get the full main signals (unless the small setting sounds cleaner and fuller), and take it the rest of the way up.
2) LFE connection: MBM-12's and sub all connected to the LFE with high quality "Y" connection for the MBM-12's. The MBM-12's are going behind the couch or in left and right end table positions. Or, near the RF-7's ports. Using the LFE, set the MBM-12's crossover to about 80 and the sub's around 50 Hz. The RF-7's get the full L/R main signals. The sub handles 50 Hz and below, the MBM-s handle 50-80 Hz, and the RF-7's get the full main signals.
Crossover points and placement will be a major player on tuning.
With a 30 x 30 foot room, I have the Klipsch's spread out further than most DEMO rooms yet aimed towards a main listening sweet spot.
As a side note, on top of the RF-7's, I placed multi-directional tweeters. The tweeter cabinets aim two tweeters straight ahead, two at L/R 45 degree angles, and 2 at L/R 90 degree angles. I also have another pair of the multi-directional tweeters placed up high for lower volume fill.
When moving around the room, it sounds like a live sound stage. To my ears, it's linear and sweet, creating multiple sweet spots just like musicians hear playing live. That's just the way I want to hear recordings.
I was looking at new true subs and the journey began. Listening to musical instruments, I'd hear musical notes drop off both ABOVE and BELOW my sub's playing abilities. The best thing I did for my older 12 inch downfiring sub was to place it on a 18 inch table in a adjacent, closed off hall to my 30 x 30 foot listening room. HUGE musical difference in everyway. Then, I moved it right behind a RF-7's rear ports. The blend was immediately better throughout the entire soundstage.
I started looking for what I feel was the missing link - powered, real mid bass. Vandersteen Quad's and 5A's and others have powered mid-bass type components. Most studio monitors for mixing and recordng have separate built-in amps for both high and low drivers to get it right.
I like the open soundstage of the RF-7's immensely. I play piano, bass and guitar and I know how real musicians sound and musically blend acoustic and electric instruments together.
I'll experiment until the SPL's sound flat and even. I have an idea that any of the recommended set-up's from HSU, with my musician/new audiophile tweeking, is going to sound linear and clear as the main volume is adjusted.
My source is a OPPO 981, and Yamaha 7.1 RX-V2400 (125 x 7). The Yamaha has a sound stage optimizer mike to help me set-up balanced SPL's at all frequencies. To me, it's a nice combo for now. I may add a Rotel 1095 later (200 x 5) for headroom and use the Yamaha as a pre/processor. The powered MBM-12's may be the only upgrade I need for now.
Back to my budget 200 watt 12 inch sub. The Epic Conquest looks great because it's flat to about 16 Hz. The Elemental Designs dual 18 inch is another top shelf choice. The SVS Ultra also looks very sweet. There are many great subs discussed here - I want a flat, musical response down way, way low. There are great musical sounds way down there. To my ears, great lower harmonies add enhanced balance to an overall soundstage.
Musical clarity and balance is my first priority goal. A full HT experience should fall right into place and sound fabulous. I want to set up a live sounding, high-end soundstage that can take command of any situation first, then "forget the system" and really enjoy the sounds.
I'll post my results after working on placement and crossover points, if I don't end up in musical bliss for months like a absent minded professor. Please add comments in any way. This is my first post and YOUR posts have helped in countless ways over and over.