Frequently there's not, especially when the thread has been in mothballs for so long and the item in question hasn't been available for years. From looking at the available data, I don't think either sub would have a huge advantage over the other. The KRK would have a bit more mid-bass headroom, but the Emotiva sub has a more liner response. What will make a bigger difference than what sub you choose is how well you integrate them with the speakers.
Make sure the sub is in phase with the speakers, and place the sub in a location where it yields the smoothest in-room response. Also choose a good crossover frequency for it to blend in best with the speakers. I see 2 advantegas though in the Emotiva: no port makes it more versatile in placing.
And the variable phase; could be usefull while trying out a nearfield placement theJman, post: , member: You do realize this thread died over 8 years ago Yea.
Regular loudspeakers sometimes have trouble playing really low bass notes and movie special effects. They have their own built-in amplifier, and controls to help you match them to the rest of your system. Subs come in a variety of sizes, and you can use more than one in a large room for truly powerful bass.
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It comes in a 10" and 12" version this is the 12 and the box size is nearly identical to their Ultra 10 and Ultra 12 predecessors. And while they don't differ much on the outside, the insides have undergone a considerable change. Most notably, Emotiva has upgraded the amplifiers in their X-Ref subs. The high-efficiency watt RMS amplifier and high-current-density switch-mode power supply gives the X-Ref 12 more than double the power reserves than its Ultra sub counterpart.
The new X-Ref also uses a new long-throw woofer with a die-cast frame and massive 3-inch vented motor assembly. In fact, most subs at this price give you stamped baskets, weaker drivers and compensate with larger cabinets. This cabinet is made of 1" thick MDF, with plenty of cross-bracing and extensive internal dampening.
Emotiva calls the finish "Studio Black" - we call it "meh". It's your typical lacquer black sub, but it does match all of Emotiva's other speakers perfectly. This provides the end user tools to combat acoustical challenges that speaker placement and room interactions place on subwoofers. Control, setup, and configuration are accomplished using a finicky, but functional, push-to-engage rotary knob, and a backlit LCD display lets you know what you're messing with.
Upon closer look of the VFD interface, it looks quite similar to the system Aperion Audio employed in their Bravus line of subwoofers. It's not uncommon for companies to share common technology interfaces such as displays, connectors, etc, though Emotiva writes its own DSP code specific for their own subs. Still, the added EQ the Emotiva X-Ref subs offer can be a useful tool in tweaking system performance.
Now for features - the X-Ref 12 wakes up automatically by sensing an input signal and Movie or Music equalization modes can be preset so the sub can be configured differently for each application. Emotiva's DSP digitally controls settings like the crossover point and equalizer parameters to ensure accuracy and repeatability. Just like with the Ultra series of subs, X-Ref also includes some very innovative behind-the-scenes features, such as sophisticated dynamics processing and their soft limiting circuitry to protect the X-Ref from dangerous overloads.
All of this is done in the digital domain opposed to analog domain of the Ultra series subs. But how does it sound? On the former, we focused on the opening prologue where the defeat of Sauron causes a pronounced bass sweep that, at reference levels, shook our room to its foundations. With The Incredibles , we queued up the scene where the rocket blasts out of the tunnel.
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