The UCS1 was designed for use with the Unity? U15 or U215 loudspeaker systems and is the ideal passive subwoofer to match their acoustic parameters. But as with all Yorkville subs, the UCS1 can be employed with any full-range enclosure, especially those with high output.

This 1000-watt, 8-ohm ?earth mover? takes full advantage of its horn-loaded design to deliver fierce bottom end from a surprisingly compact, single 15-inch-loaded passive subwoofer. The level of performance UCS1 delivers from a box this manageable in size is the direct result of outstanding loudspeaker cabinet design. Optimized horn flare geometry, careful attention to the front and rear internal chamber dimensions, as well as the use of a high performance long excursion 15-inch driver, gives the UCS1 surprisingly high output volume and deep, extended bass response. All this in an enclosure occupying only a total volume of just over 11 cubic feet.

The UCS1 is constructed from solid 15mm 11-ply birch and features a heavy gauge perforated metal grill , integrated tilt-back wheels and four strategically placed bar handles to make moving and stacking the UCS1 as easy as it can possibly be for a subwoofer in this class. The UCS1 comes in a black carpet covering to mate with the U15 and U215, or is available in a black painted Ultrathane finish (UCS1B) for use with the Ultrathane painted versions of the Unity? loudspeakers. (U15B and U215B).

Features

• 1000-watt horn loaded passive subwoofer
• 15-inch long excursion 8-ohm driver
• Compact size for a subwoofer so powerful (11.1 cubic feet)
• Solid 15mm 11-ply birch plywood cabinet
• Heavy gauge perforated metal grille
• Built in heavy duty casters and tiltback handle
• Optional finish of black ultrathane paint (UCS1B
  )

Unity? Series Overview

 The Unity? Series of loudspeakers is a radical loudspeaker cabinet design utilizing the patented Unity? Summation Aperture Horn Technology, which was invented by loudspeaker designer Tom Danley and licensed from Sound Physics Labs Inc. *U.S. Patent # 6,411,718 B1

The Unity? Series pushes the limits of modern state-of-the-art sound reinforcement technology, which features a radical new loudspeaker horn design, arguably the first major evolution in horn technology in the last 60 years. Ultra clear reproduction through the high-mid band with extremely linear frequency response has been achieved using the patented* Unity? horn technology, licensed from Sound Physics Labs Inc. Unity? horn technology combines a single 1" throat with a 1.75? diaphragm high frequency compression driver alongside three 5? ceramic magnet midrange drivers on a single, highly efficient conical horn. This combines high and mid frequency energy in a single 60? x 60? conical horn that produces frequencies from 300Hz to 20kHz. Patent holder Tom Danley explains it this way. "With a conical horn, one sees that at the compression driver exit, the expansion rate is very rapid at high frequency cutoff, and since the expansion rate acts as a high pass filter, the low frequency energy does not couple to the mouth. Move a few inches toward the mouth and one finds the expansion rate is much slower and suitable for low midrange, if only that was where the driver was. All one has to do is obtain a mid driver, suitable for efficient horn loading in that frequency band and find the point in the flare where the expansion rate is suitable for that frequency range and couple the sound in at that point. Because the compression driver and each mid driver are less than 1/4 wavelength apart, their output combines fully and coherently, something which cannot happen if the driver were further than about 1/3 wavelength apart."

So what exactly does all this mean?

What it means is that all four drivers mounted in a Unity? horn measure and act like a single point source. The sound produced from the combined 4 drivers act like a single driver. Additional DSP (Digital Signal Processing) is not required to time align the Mid and High frequencies together like in many other conventional systems. This is especially important as it minimizes, if not eliminates, the major phasing and lobing problems typically associated with your standard multiple horn 3-way box. By mechanically time-aligning the mid and High components it makes for a simpler to use system at the same time. DSP processors can assist in such matters as time alignment and minor phase adjustments, but at a greatly enhanced cost, plus they are much more complex to setup and operate. The "Plug-&-Play" simplicity of the Unity? technology makes such a Professional quality box user friendly for people of all experience levels.

 Add to this the fact that the high efficiency of the horn loading leads to the mid and high frequency drivers to be conservatively driven well below each components maximum power handling. In the U15
, for example, the cone drivers for the mid section are running well below the rated output capacity in normal operation. They closely match the compression driver in sensitivity and the group of three drivers combined can handle about two times the power. In operation they are padded down about -7dB to match the sensitivity of the low frequency section. As a result of efficient horn loading and high headroom, mid range harmonic distortion is typically much lower than that measured in most speakers at the same SPL, and far lower than any 2? compression driver could attain. Unlike other multi-driver, two or three way full range speaker systems, there is little self-interference between the various components at crossover and unlike conventional loudspeakers systems, the polar plots are free of lobes and large changes in directivity versus frequency.

The Unity? technology takes advantage of the variable flare rate nature of a conical horn. By sectioning the horn according to the expansion rate, the horn can be divided into frequency bands and be loaded with suitable drivers mounted outside the acoustic path. The front-to-back spacing of the drivers on the horn exactly compensates for a drivers inherent "built-in" delays and the phase shift / delay introduced by the crossover. Polar measurements show that while there are four drivers loading the horn, acoustically they act as ONE source. Energy vs. Time measurements show ONE source. Acoustic phase measurements give no indication of where the crossover is, it in fact, looks and acts like one point source.

 We put extensive Research and Development using the latest in Acoustical Measurement and Modeling software to ensure that all Unity? Series cabinets function equally on their own or in tight pack cluster arrays. To assist in rigging and flying of all cabinets, nine rigging/flying points are standard as follows on all Unity? Series cabinets: 2 on top, 2 on the bottom, 2 on each side and a single pullback. All 9 flypoints feature threaded inserts for 3/8? ATM? Eyebolts, the defacto standard for flying hardware due to their strength and durability, not to mention one of the highest load tolerances in the industry. Employing a minimum 5:1 safety ratio and still with a 1550lb/703kg Working Load Limit per eyebolt, and it is safe to say you will never have an issue with safety concerns when rigging any Yorkville cabinet in the air. Should the need arise and you want to fly or install cabinets in an array as large as a 3 wide, tight pack array, we can accommodate that as well. For this application we