GoldenEar ForceField 4 Subwoofer

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.

GoldenEar Invisa Series Ceiling Speakers / In Wall Speakers are engineered to deliver superb state-of-the-art sound quality, designed to blend perfectly with their surroundings and virtually disappear. GoldenEar’s Invisa ceiling speakers line-up consists of the Invisa 525, Invisa 600, Invisa 650 and SP 652 StereoPoint™ Single-point Stereo speaker. GoldenEar’s Invisa high-performance music and home theater models consist of the Home Theater Reference (HTR) 7000, the Invisa MultiPolar™ (MPX) and the Invisa Signature Point Source (SPS). All models incorporate a magnetically attached grill-covered/hidden flange construction that helps to make them virtually invisible. A tremendous amount of work has gone into the acoustical engineering of the Invisa Series Ceiling Speakers / In Wall Speakers in order to deliver the highest sound quality possible in an architectural format. All models (except the 600) incorporate a High Velocity Folded Ribbon (HVFR™) high-frequency radiator similar to the unit used in all of GoldenEar’s award-winning Towers, Bookshelf and Satellite speakers. The Invisa 525 and Invisa 600/650/652 utilize a one-piece driver/frame/flange construction in order to minimize their footprint. Solidly constructed of a marble-infused polymer, the unitized structure actually has the high-definition wide-dispersion driver constructed as an integral part. The Invisa HTR 7000 incorporates our Focus-Field™ Technology with a cast-basket 7" bass/midrange driver and HVFR™ tweeter that are angled under the grille for optimum performance as Main and/or Surround, Rear and Height speakers in a high-quality in-ceiling home theater and music system. The Invisa MPX, with its advanced spaciousness and dispersion, is perfect for in-wall Main or Surround use. The Invisa SPS in-wall SuperSpeaker™ is the perfect anchor for a high-end music and/or home theater system, utilizing GoldenEar’s latest Triton Reference speaker technology. All ceiling speakers/in-wall models have complex multi-element crossovers to precisely blend the drivers for seamless, exquisitely natural sound quality.

• One 7" High-Definition Cast-Basket MVPP™ Bass/Midrange Driver
• One High-Velocity Folded Ribbon (HVFR™) tweeter
• Rec. amp: 10 – 250 Watt/channel.

• Mount your speakers on the ground, in a tree, on a deck rail, or under an eave with the 12" Ground Stake.
• The half-inch threaded "Quick Twist Cap" gives you the flexibility to mount or "plant" the satellites anywhere to get the sound coverage you want.
• "Quick Twist Cap" works universally with all three speaker mounts: 12" Ground Stake, wire-protecting Burial conduit Junction, or Surface Mount Bracket for walls and decks.

• Get the most out of your speakers by tilting them toward your ears, ensuring you never miss out on those higher frequencies.
• Improve stabilization by securing YU4 or other compatible speakers in place with the provided 1/4"-20 screw.
• Foam padding on the top and bottom of each stand helps to maintain stability and reduce undesirable resonance.

Features

Desktop Stands: Pair the Kanto S4 desktop stands with your Kanto YU4 powered desktop speakers or another brand of desktop speakers of similar size and weight.

• Overall Dimensions: 5.5625" (w) x 2.0625" (h) x 7.9375" (d)
• Top Plate Dimensions: 3.875" (w) x 6.25" (d)
• Base Dimensions: 5.5625" (w) x 7.9375" (d)
• Weight Capacity: up to 8 lbs
• Your compatible desktop speakers should measure 5" to 7" (w) x 7" to 10" (d), and weigh no more than 8 lbs.
• 1/4"-20 screws are included to secure the Kanto YU4 speakers to the desktop stands; other brands of similar size speakers will not use these screws.

16° Vertical Tilt: With 16° of vertical tilt, the S4 desktop speaker stands angle your speakers towards your ears, ensuring you experience the full range of frequencies they have to offer. Vibration Resistant: The S4 desktop speaker stands feature multiple areas of foam padding to maintain stability and reduce vibration. Available In A Variety Of Colors: The S4 desktop stands are available in a variety of colors ( black, white, aluminum, brass, copper, or stainless steel) to compliment your decor

• Housed within a radical, ultra-ridged extruded aluminum AirFrame™, the EFX's new CLS XStat transducer builds upon the legacy of MartinLogan's electrostatic heritage with the incorporation of advanced vacuum bonding and MicroPerf stat panels, providing even greater efficiency and precision.
• Proprietary Vojtko filtering technology is utilized for EFX's electrostatic transducer. This audiophile quality network, derived from the CLX, is carefully hand-built using precision point-to-point wiring, polypropylene capacitors, massive air-core coils, and a custom wound E-I core transformer.