DESIGN PHILOSOPHY


Roger Sanders built his first ESL (Electrostatic Loudspeaker) in 1972. He quickly appreciated the superior performance that a massless electrostatic offered over conventional magnetic speakers with regards to low distortion, lack of resonances, and incredible detail. But their problems of limited output, inability to produce deep powerful bass, and unreliability have kept him busy improving them over the last 30+ years.

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The result of this lifetime of work is that Sanders Sound Systems ESLs are the only ones to have solved all the problems and limitations of ESLs. Roger's "Ultrastat" panels will play at ear-bleeding levels, cannot be arced, do not use or need protective circuitry, are immune to humidity, dust, and dirt, and do not need or use dust covers. They can be driven by multi-thousand watt amplifiers without damage. They are more rugged than conventional magnetic drivers. They do not fail and are so robust that they come with a lifetime warranty.

The Model 10 electrostatic speaker is Sanders' flag ship. It is the best speaker Roger knows how to make after 30+ years of research, design, and testing of electrostatic speaker. This is simply a no-compromise electrostatic speaker that solves all the problems that plague other electrostatic speakers.

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The Model 10 will play at concert hall levels and can be used with multi-thousand watt amplifiers without arcing or damage. No protective circuitry is used or needed. It will reproduce the full dynamic range of any music without strain. Deep powerful bass is assured with the use of a transmission line woofer system. The woofer system has been specifically designed to stop and start faster than other woofers so that perfect integration with a massless ESL finally is achieved.


Passive crossovers are not used as they are seriously flawed and degrade the performance of any speaker. Expensive electronic crossovers and biamplification are used to achieve spectacular levels of performance.


This speaker practically disappears into the room, both sonically and visually. This helps with the age old problem of the speakers taking over the room. This integrated speaker system will be a worthy anchor of a reference-level high-end audio system of the highest performance possible.


 The Absolute Sound has Awarded our Model 10c Electrostatic Speakers

hpaward

Click here to see PDF of award


 Sanders Sound hits the Sweet Spot - AudiogoN

"Roger Sanders, inventor of the curved electrostatic loudspeaker, will make you rethink everything you always thought you knew about stats. He sure did (rethink everything) to the point of abandoning his own invention for a contradictory philosophy. His logic is irrefutable, his speakers are infallible, and his electronics are unstoppable. Check out this video for a crash course on electrostatic myths and mating." - AudiogoN

audiogonmovie

 A major part of his work was devoted to dealing with the issue of high frequency "beaming" in large, planar loudspeakers. To deal with this issue, he invented the free-standing, curved, electrostatic panel. This made it possible to widely-disperse the high frequencies from a large ESL. He published this invention in Speaker Builder Magazine in 1980. The Martin Logan company adopted his technique in their ESLs.


Roger expected that his wide-dispersion, curved panels would perform better than narrow-dispersion, planar speakers. But he discovered that the curved panel was inferior to a planer one with respect to transient response, imaging, frequency response, speaker placement, and output. These problems caused by wide-dispersion speakers spraying their sound all over the room instead of being directed at the listener. As a result, in a wide-dispersion speaker, the listener hears the room with all its confused and delayed reflections instead of the superb sound available directly from a planar ESL. Roger won't compromise the quality of the sound by using his wide-dispersion design, so he abandoned it in favor of planar ESLs. The sound from his planar speakers are superior to all others with regard to transient response, 3-dimensional imaging, and frequency response.


Full-range, crossoverless ESLs are widely believed to be the "holy grail" of loudspeakers. In theory, using a single drive to reproduce the entire audio range, without the problems introduced by crossovers, would be ideal. Roger has built many such speakers. But the laws of physics cannot be circumvented. A full-range ESL simply cannot produce deep, powerful bass or have generally high output and full dynamic range.

Sanders ESL Panel

Roger spent 17 years developing woofer systems that would blend seamlessly with a massless ESL to produce outstanding bass and end the frustrating limitations of full-range ESLs. His well-designed, hybrid systems are far superior to a full-range, crossoverless ESL.


While building and selling full-range ESLs is easier and less costly than a hybrid, Roger won't compromise. Therefore all Sanders speakers are hybrids.
Crossovers are a major limitation in conventional speakers. The passive crossovers typically used are seriously flawed and cannot be used if you want a speaker with the highest possible performance. Electronic crossovers and bi-amplified operation are far superior to passive crossover systems and are absolutely essential for spectacular speaker performance.  Therefore, all Sanders' speakers come with electronic crossovers and bi-amplification.

 

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To eliminate the usual customer complaint about having to buy two amplifiers to operate bi-amped speakers, Sanders supplies a Magtech amplifier as part of each Model 10 speaker system. The customer then only has to provide a single amplifier of his choice just as they would for any conventional speaker system.


These amplifiers are not cheap, underpowered, or Class D switching amplifiers. They are multi-hundred watt, Class AB amplifiers that are very expensive, offer the finest in performance, come in beautiful chassis, and will drive the speakers with full dynamic range at realistic, concert hall levels.


When a speaker system is put in a room, it will interact with the room and this will have adverse effects on the sound. Even a "perfect" speaker system will be degraded by the room. It therefore is essential for all speakers to be adjustable to compensate for room effects. The electronic crossovers used in Roger's speaker systems have extensive controls to allow the user to adjust the speaker to compensate for the flaws in his listening room.


This adjustability means that the user can make the speakers sound almost any way they wish. It is no longer necessary to be "stuck" with the particular sound of a room/speaker combination as is the case with conventional speakers. If you don't like what you hear with Sander's electrostatic speakers, you can adjust them so that they sound the way you like.

 

In summary, Sanders' speakers use the finest technology and design possible.

No compromise is made to either to reduce cost or sacrifice any aspect of speaker performance.   The combination of electrostatic mids/highs, transmission line woofers, and fully adjustable electronic crossovers makes it possible finally to have a speaker system that can do it all without compromise.


 

We now have three versions of MODEL 10 available:


MODEL 10c Full size speaker
Price $14,000

This price includes:

  • Electrostatic Speakers
  • Magtech Amplifier
  • Digital Crossover

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MODEL 10d Full size speaker
Price $15,000

This price includes:

  • Electrostatic Speakers with 1) aluminum bass driver and 2) revised transmission line.
  • Magtech Amplifier
  • Digital Crossover

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MODEL 10e Full size speaker
Price $17,000

This price includes:

  • Electrostatic Speakers with 1) aluminum bass driver and 2) revised transmission line.
  • New LMS (loudspeaker management system) includes digital crossover with a room correction system, Digital Signal Processor, and Real Time Analyzer
  • Magtech Amplifier

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 Features of all of our Model 10 speakers

  • Perfect Insulation
  • The amplifier cannot damage the Ultrastat panel
  • No protective circuitry required
  • Panel is arc-proof
  • Extremely rugged and durable
  • Immune to dust, dirt, humidity, insects, pet fur, and foreign objects
  • Higher sensitivity (94 dB)
  • Perfect Insulation
  • The amplifier cannot damage the Ultrastat panel
  • No protective circuitry required
  • Highest precision - made with computerized diamond routing equipment
  • Greater percentage of open area and visual transparency
  • More attractive appearance than perforated metal designs
  • Voltage is user selectable for use world-wide
  • Highly efficient operation permits the electronics to be left on continually without concern for electricity usage

 


Specifications Model 10

 

Electrical Specifications

Sensitivity

94 dB

ESL Power Handling

Unlimited for any amplifier intended for domestic use

Bass Driver

10"

Bass Design

Transmission Line

Crossover Frequency

User adjustable
Factory settings 172 Hz, 48 dB/octave slopes,  Linkwitz-Riley filter

Frequency Response

20 Hz. to 27 KHz. +/- 2 dB

Magtech Amplifier Power

500 watts RMS per channel into an 8 ohm load
900 watts RMS per channel into a 4ohm load

Both Balanced and Unbalanced Input / Output Connections

 

Weight and Dimensions

Speaker Net Weight (assembled)

Model 10c
80 pounds (36kg)

Model 10d
90 pounds (40.8kg)

Model 10e
90 pounds (40.8kg)

Speaker Dimensions

15" W x 18"D x 69" H (38cm x 45cm x 175 cm)

Shipping Weight 5 boxes

Model 10c
Total shipping weight 250 lbs (113 kg)

Model 10d
Total shipping weight 270 lbs (122.5 kg)

Model 10e
Total shipping weight 270 lbs (122.5 kg)

ESL Panel Size

15" x 42" (38cm x 106.7cm)

Magtech Amplifier Weight     

55 pounds  (25 Kgs)

Magtech Amplifier Dimensions

17" wide x 5.5" tall x 16" deep (43cm x 14cm x 40.6cm)

Options to complete your system

Amplifier Options

ESL ($4,500)

The first amplifier specifically designed to drive these unusual speakers. You can use this amp on either the bass or the panels.

Magtech ($5,500)

Although this amp was designed to drive magnetic speakers, it has all the power to drive ESL's flawlessly, You can also use this on either the bass or the panels.

 

ESL Speakers White Paper

UltraStat Panel White Paper

Transmission Line White Paper

Dispersion White Paper

 

Two wood finishes available:

Speaker cherry panelSpeaker walnut panel

 

 

 

 

 

 

 

 

 

Shown on left is a Model 10 in Natural Cherry & on right is a Model 11 in Natural Walnut

 

BEHIND THE SCENES
See how the Speaker Cabinets are handcrafted by Local Artisan

 

Speakers and Electronics are manufactured in Conifer, Colorado.


We sell Direct World-Wide  (along with select dealers) - Prices apply World-Wide - 30 Day In-Home Risk Free Trial 

We are so confident in the design and build quality of our products, that we offer a

Sanders Sound Systems Lifetime Warranty

All Rights Reserved 2015 Sanders Sound Systems