AMT 1 Tower
The AMT 1 Tower, though quite dissimilar in appearance from the AMT 1, is a “high performance” luxury version of our first design and extracts every bit of low range potential in the AMT 1 woofer by utilizing a cosiderably larger and more complex enclosure. The AMT 1 Tower incorporates the same technology and ESS Heil air-motion transformer as the smaller AMT 1 but differs in its capability of sustaining extended low frequency response. It, therefore, substantially increases low frequency output for applications where performance can outweigh convenience as a deciding factor.
The AMT 1 Tower’s deep bass performance is obtained through the use of a full 6 driver – passive radiator design, the result of long experience by ESS in the design and construction of these designs. Employing techniques perfected in the earlier and highly acclaimed ESS Transar models, ESS developed a new, resistively loaded woofer section, precisely matched to requirements of the AMT woofers that provides the AMT 1 Tower with deep, full-bodied bass descending to 30 Hz pedal tones. With this high pressure bass seamlessly matched to the open detailed midrange and clear pure highs that only the ESS Heil air-motion transformer can achieve, the AMT 1 Tower is a perfectionist’s “high performance” system capable of accurately reproducing all the information on today’s finest recordings.
A large floor-standing system, the AMT 1 Tower is styled with lines of elegant restraint that blend into without dominating any decor. Its top surface is structurally sound, and decorative at the same time. Combined with this sturdy attractive column is the heritage of ESS design, now integrated with the unapprochable accuracy of the revolutionary ESS Heil air-motion transformer to create a new tradition of excellence.
AMT 332 Reference
Utilizing the new Dynamic Loudspeaker Measurement System , the AMT 332 Reference was developed to make available a hybrid system having near perfect time linearity and unprecedented fusion between specialized cone drivers and the incredible clarity of a new generation ESS Heil air-motion transformer. The AMT 332 Reference is so uncolored throughout its range, so detailed in its transient precision, and so powerful in its dynamic capability that no musical demand, from the purity of a solo voice to the visceral impact of a rock concert, will tax its resources.
To achieve performance at this impressive level, this new ESS Monitor employs four drivers operating over three individual segments of the frequency range. Midrange and treble frequencies are handled by the ESS Heil air-motion transformer positioned to fully realize its unprecedented ability to effortlessly resolve music’s highest registers. To carry the extreme definition of the ESS Heil air-motion transformer into the lower frequencies, two powerful seven-inch (18 cm) drivers, mounted in a D`Appolito arrangement, reproduce the lower midrange and upper bass. A new order of transient impact is carried into the deepest bass frequencies by the use of a new twelve-inch (30 cm), high-gauss, foam surround woofer.
The result is a performance beyond classification, free of subtle colorations or shifts in spectral emphasis which tend to favor one musical form over another, and unswerving full-bodied sonic accuracy that will remain an enduring value for years to come. Styled in simple, contemporary lines, the AMT 332 Reference blends easily into any decor; and like all ESS AMT systems, its extraordinary wide dispersion allows complete freedom of placement with precise stereo localization at any listening position.
To further enhance performance the AMT 332 Reference is bi-ampable. It is also bi-wirable. By adding the ESS Time and Frequency Electronic Crossover and dedicated low and high frequency amplifiers true bi-amplification can be achieved, giving new meaning to the word ’’reference.” All internal connections are hard-wired, and Bullet Technology (Australia) solid core wirng and silver solder are used throughout. Amplifier connections are made via Bullet Technology gold plated tellurium copper five-way binding posts.
Uncompromised in any aspect of design, construction, or performance, the AMT 332 Reference strikes the consummate balance between accuracy and musicality. It delivers music with a most lifelike realism, and represents the latest example of live and natural — a brilliant demonstration of sound as clear as light.
The ESS amt 11 in clean, contemporary styling, is the compact, floor-standing system from ESS that employs a full, bi-polar radiating ESS Heil air-motion transformer midrange/tweeter assembly for the open imaging that gained the ESS amt 1 international recognition.
The amt`s new „dual magnetic plate” transformer is identical in operation to the original ESS Heil air-motion transformer. Every important characteristic that earned the original ESS Heil air-motion transformer acclaim throughout the world has been retained: Incredible clarity and definition; instantaneous transient response; high efficiency; outstanding stereo dispersion; wide smooth response to beyond 20,000 Hz; and the design simplicity that enables an ESS Heil air-motion transformer midrange/tweeter to carry a 5-year warranty to the original owner.
Designed with the idea that outstanding components are seen as well as heard, the ESS amt 11 presents the fascination of simplicity with a flair that slips easily into any surroundings, while the wide dispersion characteristics of its drivers eliminate critical room placement problems.
Bass and lower midrange frequencies are produced by a powerful 10-inch woofer designed by ESS for outstandingly tight, clean bass coupled with clear and precise midrange definiton. The upper range is carried by the new „dual magnetic plate” ESS Heil air-motion transformer midrange/tweeter that provides smooth, high resolution clarity and unprecedented with dispersion pattern to the very highest frequencies. As is true with all ESS Heil air-motion transformers, it is completely free from the limitations present in even the most sophisticated paper-cone, voice coil, electromagnetic or electrostatic speakers.
The ESS amt 11 is engineering so advanced, performance so outstanding, and styling so uncluttered, that its position of leadership and value will remain preeminent for years to come.
As the direct linear descendent of the ESS Reference Monitor, the new ESS AMT-11.2 retains the transparent fluidity and grace under pressure that characterize the larger Reference Monitor. A major part of the design effort also went into preserving as much of the Reference Monitor’s majesty — the thunder — as possible in a more modest floor standing cabinet. Utilizing a time coherent crossover and a complement of carefully integrated individual drivers, the AMT-11 replicates the performance of the Reference Monitor in virtually all respects, most notably in the important area of time domain linearity; differing only in terms of absolute power and persuasion in the lowest bass registers. Both are eloquent reproducers of music; and worthy of consideration by anyone who places a premium on truth in listening.
Employing the latest generation dual magnetic plate Heil air-motion transformer, the AMT-11.2 brings mid and high frequencies to life with shimmering realism. Operating to well beyond audibility, the Heil air-motion transformer’s capabilities in terms of resolving inner detail and rendering musical nuance are well documented. An imperceptibly smooth and even-handed transition is accomplished in real time to two equally impressive transient quick 7-inch (18 cm) bass drivers. System response is extended. Bass is taut, defined, and very much in character with the Heil air-motion transformer. A narrow baffle, tapered edges, and point-source driver alignment result in virtual elimination of refraction, a reduction in edge reflection, and the uncanny ability to create a palpable image and a stage where everything is in place—a listening experience where voices and instruments blend yet are individually distinct and real.
The AMT-11.2 is fully bi-wirable: and all internal connections are hard wired. Bullet Technology (Australia) solid core wiring and silver solder are used throughout for the best possible signal transfer. Speaker input connections also feature Bullet Technology gold plated tellurium copper five-way binding posts. No detail has been overlooked or effort spared in enhancing system performance.
Housed in a handsome floor standing cabinet, the AMT-11 series two makes a bold furniture statement. Its cabinet is not only elegant, but also a functional part of the overall system. A large internal volume and rigid construction provide an optimum balance of attributes to empower deep articulate bass. The drivers are also placed the best possible height for listening; t he woofers are at a carefully determined distance from the floor, providing better room coupling and smoother overall frequency response.
All told, the AMT-11.2 has a blood-line connection to excellence. It is that excellence, combined with unique and demonstrable qualities of its own, that place it in the enviable position of bringing ‘live and natural’ more within reach than ever. It is deserving of consideration by anyone looking for an involving and persuasively real recreation of live music.
completely new standard of performance, the standard of an ESS Heil air-motion transformer, has been brought to popular sized loudspeakers with the introduction of the exciting new ESS amt 10 reference bookself.
This compact and convenient loudspeaker uses the latest development in ESS Heil air-motion transformer high frequency drivers – the ESS Heil air-motion transformer. Created expressly for use in the amt conossieur line, this unprecendented tweeter finally allows the absolute purity and exciting transient resolution of an ESS Heil air-motion transformer system to become available in the universally popular and adaptable „bookself” size loudspeaker.
The ESS Heil tweeter has a revolutionary diaphragm, suspended in a powerful magnetic field, which radiates through precision machined opening. It operates with the identical and unique air „squeezing” principle of the ESS Heil midrange/tweeter air-motion transformer to achieve an equivalent transient clarity, wide stereo imaging and complete freedom from fatigue-producing distortions. This new ESS Heil is matched through a precision, multi-stage crossover to a powerful 10-inch woofer developed by ESS for deep, high impact bass and a defined, uncolored midrange, in combination with its passive radiator.
The ESS AMT 10 reference bookself is a revelation in sonic accuracy that was impossible in popular systems before development of the ESS Heil air-motion transformer tweeter. Whatever your taste in music, the choice of an easy accommodated, less expensive speaker system is no longer limited to outmoded acoustic designs. Now, for only a few dollars more than conventionally engineered products, you can allow and enjoy the incredibly clean reproduction and built-in lasting value of an ESS Heil air-motion transformer, the loudspeaker of the future. Finally from ESS, a state-of-the-art bookself, the ESS AMT 10 reference bookself.
Defined by visual elegance the ESS AMT-10.2 is a striking example of form following function.
Utilizing an integral angled pedestal to position the system’s drivers at ear level, that same pedestal also serves to precisely control the distribution of rear-directed energy from the Heil air-motion transformer and put the woofer at an optimum distance from the floor. The result is better room coupling, an open, three-dimensional soundstage; and tight, well defined bass.
The ESS AMT-10.2 is a study in time coherency and system integration. These parameters were primary to the overall design effort and it is in these areas that the AMT-10 is among the best loudspeakers we have ever seen, and certainly without peer in its class. Employing the highly acclaimed Heil air-motion transformer and a time-coherent network, there is a seamless transition to a transient-quick 9-inch (23 cm) bass driver. Smooth, extended response; an enthralling mid-range presentation, and taut, articulate bass characterize the ESS AMT-10.2 and give it an enviable position at head of its class.
As with all Connoisseur Series loudspeakers the ESS AMT-10.2 is fully bi-wirable: and all internal connections are hard wired. Eichmann Technologies (Australia) solid core wiring and silver solder are used throughout for the best possible signal transfer. Speaker input connections also feature Eichmann Technologies gold plated tellurium copper five-way binding posts. No effort has been spared; no detail overlooked.
Bringing an element of the past to the present, the new AMT-10 employs a feature first utilized in the original ESS Transtatic I — an angled rear panel to control the rear directed energy from a dipole radiator. Distinctly forward thinking in every other respect, the ESS AMT-10.2 erases time warp in loudspeaker design and exemplifies the ESS commitment to ‘live and natural ’ in music’s reproduction.
as a slight variation on a familiar theme, the new AMT-12 is a quiet blend of Oscar Heil and time domain linearity. Utilizing the same Heil air-motion transformer found in all Connoisseur Series loudspeakers and two critically damped bass drivers, the stand-mount AMT-12 delivers all that the larger Reference Monitor and the AMT-11 have to offer, with perhaps a little less ‘Sturm und Drang.’
In fact, the AMT-12 is identical to the floor-standing AMT-11 in driver complement — same drivers, same configuration, same time linear network — all in a bookshelf, or stand-mount cabinet. As you might expect, it is exemplary in terms of high frequency extension, midrange clarity, and image palpability. It possesses alluring musical qualities that promise to bring ‘live and natural ’ time linearity to a broader audience.
The AMT-12’s Heil air-motion transformer is mounted in a point-source configuration with two critically damped 7-inch (18 cm) bass drivers. Rear radiation is free and open, creating a true dipole sound pattern. A deceptively large, spacious, and coherent sonic image emerges. Not only is this near holographic presentation important in two-channel reproduction, it is an incredible benefit in 5.1 home theatre systems.
As with the larger AMT-11, the ESS AMT-12 is fully bi-wirable: and all internal connections are hard wired. Bullet Technology (Australia) solid core wiring and silver solder are used throughout for the best possible signal transfer. Speaker input connections also feature Bullet Technology gold plated tellurium copper five-way binding posts. No effort has been spared; no detail overlooked.
Whether re-creating a concert hall environment or immersing yourself in the unquestionable fun of 5.1, the AMT-12 should be at the top of your list of loudspeakers to consider.
PS-61 and PS-62
The PS-61 and its complement, the PS-62 may be modest in size, but they are deceptively large in terms of sonic presentation. These loudspeakers take full advantage of a smaller baffle size and gently rounded edges to virtually eliminate diffraction artifacts and edge reflections. The result is some the most impressive imaging and focus you will ever hear. They simply must be heard to be believed. Their ability to reproduce the depth and breadth of a big band or full scale orchestra is nothing less than stunning.
Both models feature the legendary ESS Heil air-motion transformer for mid and high frequencies. This is identically the same driver used in the larger PS-261 and PS-81, and sets new standards in its ability to render musical shadings and nuance. System integration is accomplished with time domain linearity and careful attention to a gentle and seamless transition from the air-motion transformer to specially designed transient-quick seven-inch (18 cm) bass drivers.
The PS-61 and PS-62 are bi-wirable; or bi-ampable. By adding the new ESS Time and Frequency Electronic Crossover and dedicated low and high frequency amplifiers either model can be configured as a fully active system. Their already impressive focus and three-dimensionality are enhanced even further.
To augment system bass response, the PS-62 also employs a second diaphragm — in this case a 10-inch (25 cm) passive radiator. As a rear mounted diaphragm it works in tandem with the woofer to move air more efficiently below system resonance, thus reducing distortion, extending low frequency response, and enhancing transient response.
Both models are hard wired internally and utilize Bullet Technology (Australia) solid core wiring and silver solder throughout. Amplifier connections are made via Bullet Technology gold plated tellurium copper five-way binding posts.
An audiophile pedigree, careful attention to detail, and advanced time domain engineering characterize the new PS-61 and PS-62. Furniture grade cabinetry, hardwood detailing, and attractive floating grilles add visual enhancements to already impressive list of attributes. These two loudspeakers are unequivocally among the finest in their class. They certainly warrant consideration by anyone who places a premium on live and natural in music’s reproduction.
The trickle down effect is fully evident in the PS-81. The stated goal in its design was to capture as much and lose as little as possible of the larger PS-162. Resolute in their commitment, and attentive to the combination of attributes that gave the larger floor standing PS-162 its special place, ESS painstakingly developed the PS-81 and proudly offers it as the company’s premier bookshelf loudspeaker.
Time domain considerations dominated the company’s design charge. With extensive use of the new Dynamic Loudspeaker Measurement System, ESS refined and designed a three way loudspeaker that is integrated, phase coherent, and exceptionally focused. Much of the engineering art is in the phase coherent crossover network. Gentle tapering, careful choice of drivers, and attention to group delay contributed to a multi way design that blends its acoustic presentation into a homogenous musical whole. Natural and live are the words that most come to mind.
The PS-81 is bi-ampable. By adding the new ESS Time and Frequency Electronic Crossover and dedicated low and high frequency amplifiers, the PS-81 can be configured as an active system. With the only passive components being those between the midrange driver and the Heil air-motion transformer overall performance in the active mode is elevated to a new level. It is also bi-wirable.
Aside from total diaphragm mass, the Heil air-motion transformer is identical to that used in the larger PS-261. All the hallmark aspects of this design are evident in the high frequency performance. There is a marked absence of strain —an effortlessness— to the presentation of music’s highest register, and beyond. The nine-inch (22 cm) bass driver is identical in configuration to those used in the PS-261 and provides bass authority down to the under reaches of live music.
As with the larger PS-261 all internal connections are hard wired; and Bullet Technology (Australia) solid core wiring and silver solder are used throughout. Amplifier connections are made via Bullet Technology gold plated tellurium copper five-way binding posts.
Furniture grade walnut veneer and solid hardwood detailing lend a warmth and subdued elegance to the PS-81 cabinet. The overall enclosure size also makes this loudspeaker versatile enough to be stand mounted or conveniently placed on a sturdy shelf. As the pre-eminent bookshelf loudspeaker in the new ESS line, with time and frequency aligned, isn’t it time that you give it a listen?
The PS-261 draws from the latest validations regarding time domain distortion. Employing a refined time coherent crossover ESS has seamlessly integrated the latest generation Heil air-motion transformer with a pair of specially designed transient-quick bass drivers. Capable of resolving demanding impulse and Dirac signals in the lab, the PS-261 delivers music with convincing realism in the living room
The PS-261 is bi-ampable. Adding the new ESS Time and Frequency Electronic Crossover and dedicated low and high frequency amplifiers, true bi-amplification can be achieved. This configuration takes performance unequivocally to new heights. As a step in that direction, but more in keeping with mainstream high end audio, the PS-261 is also bi-wirable.
Non-resonant furniture grade cabinetry houses the latest outgrowth of ESS`s on-going research and development—a new, ultra thin diaphragm Heil air-motion transformer. Traditionally the Heil air-motion transformer has distinguished itself with unrivalled focus and air throughout the middle and high frequency range. This newest iteration carries that tradition even further. Its thinner .001-.0005-.001 aluminium-Teflon-aluminium diaphragm features a low out-of-band resonance and a flatter frequency response. This has enabled ESS to use gentler tapering in the crossover region, resulting in improved phase linearity, enhanced transient capability, and better time domain response.
As ideal complements to the newly redesigned Heil air-motion transformer, the PS-261 employs two advanced seven-inch (18 cm) critically damped bass drivers. Speed, precision, and a very controlled low frequency response characterize the system’s performance. The resulting tight, coherent bass is free of the tonality so conspicuous in typical loudspeaker designs, and extremely important in a system that also features the Heil air-motion transformer.
All internal connections are hard wired (no slip-on connectors); and Bullet Technology (Australia) solid core wiring and silver solder are used throughout.. Amplifier connections are made via Bullet Technology gold plated tellurium copper five-way binding posts.
The stately, handcrafted cabinet makes a bold furniture statement. Not only is it unquestionably a thing of beauty featuring solid hardwood detailing, it is also a functional system component. Its solid construction and large volume interior ensure bass impact without boom. Its pedestal base also elevates the woofer from the floor, providing better room coupling and smoother overall frequency response.
In short, the PS-261 is a coherent, honest, and truly impressive reproducer of music. Its combination of attributes — time domain linearity, bass extension, and Heil air-motion transformer — make it a loudspeaker deserving of audition no matter what the budget.
This unprecedented loudspeaker introduced the revolutionary ESS Heil air-motion transformer to high fidelity sound reproduction and achieved immediate acclaim world-wide as the major advance in loudspeaker design of the decade. By using the ESS Heil air-motion transformer for mid and high frequency reproduction, the original AMT-1 broke free of the past technological theory to achieve a transparency, uncompressed stereo imaging and dynamic transient impact beyond any previous high fidelity experience.
Completely unlike any loudspeaker that came before, and already a classic, the ESS AMT-1 opened new sound vistas to music listeners. All forms of distortion were virtually eliminated; not only sluggish acceleration that smears the immediacy of percussive sounds, but the less immediately recognized motional errors that rob brass of their “sheen”, strings of their “guttiness”, solo instruments of their natural “ease”, and turn an orchestra of individual instruments into a homogenized sonic haze.
The latest generation AMT-1, the ‘e’, carries this tradition forward. As the beneficiary of new understandings relating to time domain distortion, phase linearity, and group delay this newest AMT-1 paints an alluring sonic picture, one that displays new levels of image convergence, system integration, and coherency. Designed and refined using the revolutionary new Dynamic Loudspeaker Measurement System, the ESS AMT-1e takes its charge from the genius of Oscar Heil; it is refined by the writings of Richard Heyser, and brings them both into a clear new focus.
The AMT-1e combines a new ultra thin diaphragm ESS Heil air-motion transformer with a specially developed twelve-inch (30 cm) woofer that has an oversize, deep-drawn frame and a powerful high-gauss magnet assembly for long, linear excursion at the highest possible acceleration. A culmination of ten prototype designs, this latest ESS AMT-1 woofer achieves both powerful, impactful, low frequency response and rapid acceleration for crisp transient performance that blends precisely with the clarity of the ESS Heil air-motion transformer.
The ESS AMT-1e is bi-amplable. It is also bi-wirable. By adding the ESS Time and Frequency Electronic Crossover and dedicated low and high frequency amplifiers true bi-amolification can be achieved. Further, all internal connections are hardwired and feature Bullet Technology (Australia) solid core wiring and silver solder. Amplifier connections are made via Bullet Technology gold plated tellurium copper five-way binding posts.
Revolutionary today and the standard of comparison for tomorrow, the ESS AMT-1e is the first authentically new approach to sound generation in a decade. Every detail of the recorded performance is revealed with a degree of purity never before achieved and completely beyond the ability of all conventional systems. Nothing we say, or can say, will prepare you for the AMT-1e and its incredible high resolution sound — sound as clear as light.
Time and again loudspeakers are designed with frequency response as the most important arbiter of their performance. Flatter and flatter frequency responses still yield loudspeakers that sound entirely different one from the other. The unmistakable conclusion is there must be something else. The new Dynamic Loudspeaker Measurement System utilized by ESS now brings this other very important parameter into focus. Revealing time domain performance in startling three dimensional detail, this revolutionary new evaluation tool promises to rewrite the textbook on loudspeaker design. The AMT Monitor takes full advantage of this new measurement system, and is the latest and most sophisticated beneficiary of important new understandings relating to time domain distortion.
A new time-coherent crossover is a critical contributor to phase linearity in the Monitor. System integration, uniting the latest iteration Heil air-motion transformer—described extensively in the first pages of this brochure—with a critically damped 12-inch (30 cm) woofer, is accomplished imperceptibly. What emerges is an incredibly coherent musical image; and the distinct impression that music is coming through the loudspeaker.
To augment system bass response, the AMT Monitor employs a second front mounted diaphragm—in this case a 12-inch (30 cm) passive radiator. It works in tandem with the woofer to move air more efficiently below system resonance, thus reducing distortion, extending low frequency response, and enhancing transient response. The speed and precision that distinguish the Monitor’s low frequency response are critical in a system that also features the Heil air-motion transformer.
The new AMT Monitor is bi-wirable; or bi-ampable. By adding the new ESS Time and Frequency Electronic Crossover and dedicated low and high frequency amplifiers it can be configured as a fully active system. The system’s already impressive focus and three-dimensionality are enhanced even further.
All internal connections are hard wired (no slip-on connectors); and Bullet Technology (Australia) solid core wiring and silver solder are used throughout for the best possible signal transfer. Speaker input connections feature Bullet Technology gold plated tellurium copper five-way binding posts.
Live and natural , combined with a healthy measure of acoustic thunder—this characterizes the performance of the new ESS Monitor. Truly, the consummate balance of finesse and fortissimo, it deserves consideration by anyone looking for the absolute best that music has to offer.