The front, and to counter the beaming they have a massive phase plug operates more as a way to make sure the high frequencies don't all project out and instead disperse. To get the sound waves out into the room Zu has slapped a whizzer cone on Sound above the breakup point, killing off axis response as the sound waves just bounce around in the speaker cone instead of projecting out into the room. Depending on where you measure you will get wildly different results above the breakup point. Next problem with breakup is once you are in it the cone is almost a random frequency response generator. This will still be audible, but is reduced from what I was expecting from a The spike is about 2-5dB depending on where on the cone I measure.
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The obvious things that Zu does in this driver is to eliminate the spike in response normally associated with breakup is using a paperĬone, accordion surround, and then doping of the speaker surround and putting lines of dope on the cone.įrom my measurements they have done an alright job accomplishing this goal. Hard cones such as aluminum will have short massive spikes, where as soft materials like paper will have a more smoothed outįor a speaker driver that is run without a crossover this behavior is extremely important. Material properties of the cone and driver will determine how loud and drawn out the breakup sounds.
so 2k for 10 inch, 4k for 6.5 inch, 7k for 4 inch, etc. You can predict with some accuracy knowing the size of the driver where it's going to break up. This type of behavior is inherent to the size of the speaker cone. Here you can see the screaming approaching 2k as it climbs 7dB and then falls off a The above diagram is from the spec sheet of the Delta 10B driver from Eminence that may well have been the starting point for the Zu driver. Usually upon entering breakup the driver will scream letting you know it is unhappy about having to do something that physics says it should not be Something that happens when a driver goes outside of its' comfort zone. The rest of the speaker, cone, basket(cast aluminum), suround,Īs this driver is the star attraction for the brand let's spend some time looking at the details that make up this unique piece of engineering, but before we can do that we need to talk about cone breakup. Just about everything on this driver is custom, the only parts that are off of the shelf are the motors (voice coil and magnet) which are Eminence parts. So I will call this a woofer that just happens to run without a crossover in this implementation. When listening it's obvious that it has a tweeter because the dispersion pattern's don't match. It needs a tweeter, and it has one on this speaker, and
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Yes woofer, it's sold as a full range driver that acts as a single point source so that it seems like all of the sound is coming from it. To start let's take a look at the parts of the speakers and discuss each one in detail. As for size, these things are massive, they One of my buddies who stopped by for a listen one day kept remarking on the large Zu emblem and how tacky it was. These particular speakers have a few options: customįinish, no grills, and Cardas speaker connectors in the back. It's my understanding that hipsters eat this shit up. How about the look of these speakers? I'm not a fan, but they look pretty neat in a throwback kind of 50's appliance way.
Speakers and see if that is true, discuss some of the silly things done when designing this speaker and look hard at the real sound they produce. His disregard of his own measurements saying that in fact they sound better than they measure surprised me. This speaker have been well documented in the past by the likes of JA at Stereophile.
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I have spent countless hours figuring out how to explain what I hear, and the different ways that it sounds and performs depending on the setup and the music run through it.
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