| Content | The K.12.2 powered 2-way loudspeaker operates from a 2000 watt power module. This module delivers ample burst and continuous power for the loudspeaker’s premium drivers. Dynamics processing was built to protect the drivers from damage and keep distortion from the performance. Low-noise fan cooling design of the module allows the enclosure to be used in quiet settings.
Operation is easy right out of the box with an extensive list of factory preset EQ contours including Live, Dance, Monitor, and more. For other applications you want quick access to, use savable/recallable Scenes feature. This can store information such as user EQ, Delay, and input configuration settings for you to cue up at your convenience.
Loudspeaker has two balanced combo XLR/F plus 1/4-inch TRS connectors with independent gain control. The first has selectable MIC/LINE level input, the second has selectable HI-Z/LINE level input. Both inputs connect directly to a pair of XLR/M throughput connectors, allowing signals to be daisy-chained to another audio device. Connect sources such as smart phones, computers, and MP3 players with the included 3.5 mm TRS input jack. Line-level output with mixed signal from all inputs is provided.
Coverage is extremely accurate and handles well in a variety of acoustic spaces with little or no equalization thanks to Directivity Matched Transition and Intrinsic Correction. Directivity Matched Transition ensures uniform response across the coverage area by matching the coverage angle of the woofer at the cross-over frequency with the horn pattern. Intrinsic Correction techniques work to create smooth power response.
Rugged ABS enclosure protects elements of the loudspeaker while giving it a professional and unobtrusive look. Use as either a main PA or floor monitor. Speaker also has ergonomic handles and heavy-duty grille with fabric lining, dual pole cups for 0 or 7.5 degree downward tilt, and integrated M10 fittings to accommodate suspended applications.
QSC K12.2 Features
- 2000 watt Class-D amplifier module
- 75 degree coverage
- Intrinsic Correction™ tuning and loudspeaker management
- Directivity Matched Transition® designli>
- Rugged ABS enclosure
- Deployment in main PA or floor monitor position
- Factory presets and savable/recallable scenes for commonly-used applications
- Multi-function digital display for control and selection of loudspeaker functions
- Dual pole cup mounts: standard and 7.5 degree down-tilt
- M10 fittings for flown applications
| With the ElectroMotion ESL, Martin Logan has created the world's most affordable high-performance hybrid electrostatic loudspeaker, with a legendary CLS™ XStat™ transducer and an 8-inch woofer to deliver ideal home theater front/surround sound.
ElectroMotion ESL
The ElectroMotion ESL represents a bold new direction for electrostatic loudspeaker design. Featuring a full-sized 34-inch tall curvilinear XStat™ electrostatic transducer and a superbly integrated high-performance woofer, the new EM-ESL performs more like a mini-flagship than an entry level audiophile speaker. Designed for both 2-channel music enthusiasts and those seeking the worlds most articulate and dynamic multi-channel home theater systems, the EM-ESL is the most compelling 'affordable' audiophile-grade speaker ever brought to market.
The ElectroMotion ESL (EM-ESL) represents a brave new direction for electrostatic loudspeaker design. Featuring a full-sized 34-inch tall curvilinear XStat™ electrostatic transducer the new ESL performs more like a mini-flagship than an entry level audiophile speaker. Long time MartinLogan enthusiasts are sure to describe ElectroMotion ESL as the second-coming of the legendary Aerius electrostatic speaker which debuted in 1992 and went on to sell in record numbers. The new ESL, however, boasts 40 percent more radiating surface, a superbly integrated and authoritative bass performance, and a sensitivity rated at 91dB. In addition, the ESL is capable of being effortlessly powered by both receivers and high-end amplifiers alike.
ElectroMotion ESL's XStat electrostatic MicroPerf panel is housed within a radical aluminum and composite AirFrame™ similar to those found on MartinLogan's flagship products. AirFrame technology rigidifies the electrostatic panel without obstructing playable surface area or interfering with ambience enriching dipole sound radiation. At the same time, an AirFrame provides electrical and acoustical isolation, minimizing intermodulated distortion caused by vibration and resonance while enhancing imaging, low-level sonic detail, accuracy, and efficiency. MicroPerf design optimizes the individual holes of The EM-ESL's electrostatic panel. MicroPerf design substantially increases diaphragm radiating area, compared to early generations—without compromising structural integrity. The resulting increase in output capability and efficiency allows The EM-ESL's panel to enjoy a substantial leap in bandwidth and dynamics without growing larger. For example, The EM-ESL's XStat electrostatic panel features 129 square inches of sound radiating surface on both the front and back and a sensitivity of 91dB into 6 Ohms. The Aerius, well received its day, only had 93 square inches and a sensitivity of 89dB into 4 Ohms.
A unique XStat™ transducer was developed for the ElectroMotion ESL to reduce the gauge thickness of the electrostatic panel's steel stators. The reduced gauge does not alter the performance characteristics of the panel. However, as a natural byproduct of tighter build tolerances, it does increase the visual transparency of the panel. The EM-ESL's new XStat panel is so visually transparent it nearly vanishes when you're sitting and listening.
Controlled Dispersion Sound Radiation
Another key attribute of the ElectroMotion ESL is its naturally dipolar radiation pattern. A true dipole, The EM-ESL radiates sound with equal intensity from the front and back of its diaphragm, but the outputs are in opposite phase. As a result, sound waves rippling out toward the sides meet at the speaker's edge and cancel. That and the relatively large size of the ElectroMotion ESL's electrostatic panel cause output at the sides to be very low relative to that of a conventional loudspeaker, which in turn minimizes side-wall reflections that tend to muddle sonic detail and stereo imaging. While the reduction in output to the sides contributes to the astonishing clarity for which electrostats are revered, the energy reflected off the wall behind the speaker opens up and deepens the sound.
Superb Bass Integration
To seamlessly blend audio output from the high- and mid-frequency electrostatic panel to the low-frequency woofer the ElectroMotion ESL features a proprietary Vojtko™ topology filter utilizing custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series, and low DF electrolytic capacitors in parallel.
A precise 8-inch high-excursion, perfectly balanced, audiophile grade, doped fiber cone woofer was custom designed exclusively for The EM-ESL by MartinLogan's in-house engineering team. This woofer precisely optimizes cone suspension and magnetic flux field to produce high levels of bass output and simultaneous precise midrange. The custom woofer's rigid light-weight diaphragm eliminates cone flexure and minimizes response time to achieve remarkably low-distortion approaching that of MartinLogan's award-winning electrostatic panel design.
Easy Connections, Solid Adjustable Footing
Convenient push-style speaker terminals and curved inserts help guide speaker wire effortlessly into place. The rubber end caps on the terminal are also removable for the use of banana plugs instead of bare wire. The EM-ESL is supplied with sturdy, 3/8-16 ETC™ spikes, which can be used to fine tune vertical wave launch, enhance stability on thick carpets, and create tighter coupling between speaker and floor to provide a tighter and detailed bass performance. Each spike is conveniently covered by removable rubber end caps if you prefer not to use spikes. |
The ForceField Subwoofers are unique in appearance and incomparable in its deep, rich bass ideal for music and movies. The ForceField 4 is compact and drives a front-mounted high-power ultra-long-throw 10" sub-bass driver coupled to a downward-firing 11"x 13-7/8" quadratic planar infrasonic radiator.
The ForceField Subwoofers’ unique and attractive cabinet shape, with its non-parallel cabinet walls (the top is narrower than the bottom when viewed from the front), helps the ForceField subs achieve extraordinarily deep and tuneful bass that is ideal for music and movies. Their cutting-edge amplifier design employs state-of-the-art DSP control for frequency shaping so the subwoofer produces accurate, consistent and musical bass performance.
Many of today's subwoofers fall into either the ultra-compact high-output category, or the (larger) high performance, extended response, high-output category. These two design types tend to offer different performance benefits, the ultra compact having the ability to play extremely loud, but over a narrower bandwidth and the large subs having this high output plus more extended response.
GoldenEar's engineering team set out to accomplish the best of both worlds with the new ForceField subwoofers: small size, yet with the smooth & wide response of a larger sub. There's no sleight of hand, just great engineering - all ForceField subwoofers share the same technologies, here is a list of their features. Read through these and then take a good demo disc into your GoldenEar dealer's sound room and listen for yourself.
- Custom-designed high-output drivers with very large motor assemblies. These drivers handle massive power, have very long excursions, and have ultra-low distortion.
- Rigid cabinets with non-parallel sides to minimize standing waves and distortion. The drivers are front firing in all of our subwoofers for optimal performance. The cabinets' possess a unique and understated shape and style that matches well with any décor.
- The driver's response is enhanced with a carefully tuned, down-firing, quadratic-shaped passive radiator (no noisy ports on ForceField subs). The quadratic shape allows the radiators to use maximum surface area on the bottom of the cabinets and gets even greater output from the slot-loading that results from the subwoofers' interface with the floor (see next point).
- The soft, energy-absorbing feet provided with every ForceField sub serve a number of functions. First, they hold the subwoofer at the correct distance off the floor so the passive radiator slot-loads with it for significantly increased output at the lowest frequencies. Second, the soft feet keep the subwoofer from dancing around on the floor.
ForceField subwoofer amplifiers are designed in-house by GoldenEar engineering, so each is the perfect amp to power its specific subwoofer model.
- In addition, the amps all have powerful DSP sections to optimize frequency response, minimize distortion and prevent damage from overdriving. These amplifiers are all low distortion and extraordinarily powerful (up to 1500 watts on the ForceField 5) for reproducing seriously high-output AND low bass.
- ForceField subs all have speaker-level inputs and outputs (with a high pass crossover on the outputs) as well as a direct LFE input, too.
- Non-parallel sides minimize standing waves and distortion. The shape allows the radiators to use maximum surface area on the bottom of the cabinets and gets even greater output from the slot-loading that results from the subwoofers' interface with the floor.
- Features 1200-watt digital amp, a front-mounted high-power ultra-long-throw 10" sub-bass driver coupled to a downward-firing 11"x 13-7/8" quadratic planar infrasonic radiator.
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The Helos 22 delivers legendary Martin Logan quality and performance in a compact, high-resolution in-ceiling loudspeaker. Featuring dual 0.75-inch neodymium soft dome tweeters, a high-rigidity aluminum cone woofer, and proprietary Vojtko crossover topology, Helos 22 effortlessly provides solid imaging with extreme sonic accuracy.
- Features dual tweeters and a dual voice coil woofer. This design allows the speaker to provide stereo sound from a single speaker, ideal for use in small rooms such as bathrooms, small offices, entryways, and kitchens.
- A robust mounting-lock system allows quick, trouble-free installation. When not in use, the constant-control mounting locks are held securely within a self-contained housing. When moved into place during installation, they couple the speaker's chassis firmly to the ceiling. And if the speaker is ever removed, the locks retract and latch themselves back in their housings.
- Features ultra-low profile, paintable micro-perforated grilles with no visible bezel for a near invisible integration into any wall or ceiling.
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The Motion ultra-slim SLM XL features four passive radiators for amazing, controlled bass performance.
- The dual 4-inch, ultra-slim fiber cone woofers and four 4-inch passive bass radiators, paired with a Folded Motion tweeter create stunning acoustical alchemy all from a thin profile.
- The drivers are held securely in place by a solid, black-anodized brushed aluminum baffle under the grille.
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The ultra-compact SuperSub X (just a little bigger than a 12-1/2" cube) utilizes the same dual-plane, patented inertially-balanced driver array as the SuperSub XXL, but instead employs two horizontally-opposed 8" ultra-long-throw active drivers and two vertically-opposed 10-1/2" x 9-1/2" planar infrasonic radiators, driven by a 1400 watt Class D Digital amplifier.
GoldenEar's best subwoofer, the new SuperSub™ Series models are ultra-high-performance yet amazingly compact subwoofers that incorporate many recently developed unique and advanced technologies and components. The goal was to create beautifully styled, finely finished, reasonably sized subwoofers that could generate very low-frequency pressure waves of extremely high amplitude, while delivering accurate and precise low-frequency performance that is both highly impactful and extremely musical.
In order to achieve this, the SuperSubs, GoldenEar's best subwoofer series, incorporates a unique, patented 360 degree dual-plane inertially-balanced driver and sub-bass radiator topology, combined with a very advanced electronics package. With two active drivers separated horizontally in space, as well as two passive radiators separated vertically, the driver-to-room coupling is distributed much more smoothly, for in-room bass performance that can’t typically be achieved with a single subwoofer.
The electronics packages that drive the SuperSubs' fully balanced array are a 1600 watt (XXL) and 1400 watt (X) Class D Digital amplifiers whose design is based on the technology originally developed for the GoldenEar Triton One tower. Features include: Discrete multi-band limiting, phase-perfect equalization, fully balanced and advanced reconstruction filters and a strong focus on keeping latency to an absolute minimum. Input facilities include a direct-coupled, unfiltered LFE input for home theater, or stereo Left/Right low-level inputs with low-pass for two-channel setups. Sonically, the result of all this technology is a rock-solid bass response that is both exceptionally fast and tuneful for music and extraordinarily deep and powerful, in order to effortlessly reproduce the most extreme movie sound effects.
- Two 8" long-throw high-output bass drivers
- Two 10-1/2" x 9-1/2" quadratic planar infrasonic radiators
- 1400 Watt ForceField digital amplifier
- LFE Line-Level Input: Unfiltered (no low pass), direct-coupled
- Right/Left Line Level Input: Variable Low-Pass from 40 Hz – 150 Hz
- Fuse Size: 6-amp 250-volt slow blow fuse (110-volt version) / 4-amp 250-volt slow blow fuse (240-volt version)
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