AVS Forum Special Member
Join Date: Jul 2000
Location: Chicago, IL, USA
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If you follow James's link above, you will see that just last night we added a handful more pictures.
The angle on the boundary compliant(TM) side of the box is not intended for monitor use, but rather to place the horn wall parallel to the boundary. This makes for the most benign interaction with the boundary. That boundary can be a ceiling, side wall, floor, or even another loudspeaker. I will make sure and have our webmaster yank the upside down shot. There are a few who have used them in this manner for unique applications, yet a more common use for this boundary compliance(TM) is as a down fill under a large main cluster, or when placed directly against a ceiling in a main, soffit, or under-balcony/delay ring application.
The runt is indeed a great speaker for home theater use. We are doing some investigation as to overall balance and such, but nothing more than some contouring of the response for the application with respect to placement and typical listening distance. As is it sounds extremely detailed and "live" sounding. Above 80-100Hz it has the output capability of speakers 2-3 times its size. Above 150Hz the horn is playing a major role, where below there the dual 8" woofers with almost 8mm of linear travel each way provide significant linearity to very dynamic levels. The continuous power rating of 400W is limited mostly by the sub 150Hz range where the horn unloads the woofer as well as the thermal capacity of the crossover components. Understand this is NOT a peak power rating. This rating would suggest for many music playback applications to employ amplifiers with 2 to 4 times this amount when justified. Through much of the midband/vocal range, drivers are at 1/10th to 1/4 of the driver's rated power with a 400W input. In short, the speaker is loafing in the important ranges, which lends to it's effortless, and stress free sound. For most home applications I would prefer an amplifier with 150-200W into 4 Ohms or more, with larger, well treated rooms with higher playback levels in mind justifying 400-1200W @ 4 Ohms if it is available. Of course they also sound quite nice on a little 80W/ch Adcom I still have. Just not as nice as they do with a LOT more power available.
An important factor many in the home theater realm are not used to expecting from a speaker is directivity or pattern control. This means that the sound is quite uniform within the 90 degree by 55 degree, straight walled horn. Outside of this window, the response begins to shelf off much more smoothly and more quickly than is seen in standard direct radiators, as well as older curved walled horns. As such, reflective surfaces in the room are excited much less, and front wall and early side wall reflections can be hugely reduced just by changing the speakers. This results in much better dialogue inteligibility, as well as better spacial placement of sounds.
"thebland" has had Chris Collins working on integrating these into his system, where many will hear them at the Michigan get together in April. There is also an older thread in this forum where Anthony Andaleon posted some pictures of a system he and I put together with 3 runts built into the front wall. One of the subjective comments we keep hearing is that they can truly frighten and make you jump from your seat when a soundtrack is intended to do so.
Seaton Sound, Inc.
"Make no little plans; they have no magic to stir men's blood..." Daniel H. Burnham