Real audition was done today.
- No measurements taken, this is audition only
- I simply plugged the Cobra to my receiver as a biamped right channel, and set bass management to fullrange + LFE through Left/Right. (~100 watts avail)
- Speaker is the MFW-15, taken from my original ported enclosure and straight into the Horn
- Dark knight rising "Airplane"
- Tron Legacy "Sam enters the digital realm -> the ride to the arena"
- U571 "depth charges"
- Pulse "... the pulse"
- WOTW "hiding in the house"
- LOTR Fellowship -> several scenes
Well, I will start with saying that I broke two picture frames. Turning the volume up is not for a regular family home, as anything that is not solid will rattle its way to the floor. If there is a weak point where the drywall isn't secured properly, a horn of this size will point it out.
As for the SPL; people were takling about "How much SPL is a loud sub" thread, and I was right from the beginning. This just confirms that 120dB is insane bass for a house. I know because I was well under that and it was THUNDEROUS. I didn't know a horn would work in such a way that would cause floor wobble. I thought that was a mechanical thing, but the horn ripple my floor like a wrestling rink.
Sound: It is so effortless. Even when cranked up I wasn't even bothering this thing. Just plowed long like a champ. The sound is so sharp and punchy, and gut crushing. The only problem with the sound is that it was accompanied with rattles from ALL OVER the house. EVERYTHING was shaking. So it adds all kind of artifacts to its actual sound. I recommend this type of sub for a basement where there is nothing else but the HT.
1. Does this need a 300watt plate amp? Not for a family home. I can firmly say that there is absolutely NO NEED for a 300 watt horn in a medium sized house. 100watts is very sufficient.
2. Does one need two so to equalize dead spots in the room? WHAT DEAD ZONES??? If you had an SPL meter, then you might detect some fluctuations here and there. But I could find no dead zones. There is so much mechanical coupling throughout the house, that the sound aspect is only about 50% of the equation here. I suppose if you were to lower the volume and want a more refined tuned setup, and all these final details matter to your heart, then a second sub to even out the dead zones would be recommended. But again, I can assure you can sleep well at night knowing you only have 1 horn.
3. So what is the biggest advantage of getting a horn? Simple -> bang for the buck. You get low distortion bass, and as much as your house/wife will allow. Big and deep, and very EQ-able. If you never crank it, then you can EQ in the very low end (pre-20hz).