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Criterion S2100 CTL Speakers (Pair)

by T+A Elektroakustik

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Criterion Loudspeakers

Back in 1982 we developed a unique and truly ground-breaking series of transmission line loudspeakers who-se fundamental design principles are as effective today as ever.

We christened this series Criterion (benchmark), and this original range proved to be one of the most successful speaker designs ever produced.
Ever since its introduction Criterion has been a byword for loudspeakers equipped with uniquely superior technology, offering extraordinarily good sound and unusually high performance. 

The latest incarnation of the range is named CTL and consists of three floor-standing loudspeakers that are more compact but even better and more powerful than their predecessors. The speakers boast completely new, ultra-modern high-performance drive units and a transmission line design which has undergone further refinement.

Design Philosophy

Our Criterion series constitutes a very good example of successful evolution. The life cycles of each model range have been remarkably long, because the speakers were fitted with the finest, most sophisticated technologies available. Only when further development made significant improvements possible have we introduced a new range of models to the market. The CTL series is the latest stage of evolution of the Criterion loudspeaker. As you would expect, we have kept our faith in the unique transmission-line principle, since it offers major advantages in the reproduction of low frequencies, but we have again succeeded in improving the efficiency of the line with the new, deeper cabinet format. The transmission-line principle offers major advantages over the bass reflex system, but does call for extremely sophisticated cabinet design if the speaker is to exhibit a very low bass cut-off frequency. In specific terms, this means that the sound guide behind the bass drivers (the transmission-line) must be very long – similar to an organ pipe – otherwise very low frequencies cannot be generated. 

The new CTL = Compensated Transmission Line series features a cabinet design which even compensates the acoustical  impedance of the system. Each cabinet consists of a sealed internal case into which the transmission line is glued. This construction not only renders the cabinets very heavy, but also extremely rigid, eliminating all traces of resonance effects. The side and wall panels consist of heavy-duty HDF, finished either with multiple coats of rubbed lacquer, selected, top-quality hardwood veneers or carbon. The baffles feature a newly developed design which we have christened  “organic baffle”. The apertures for the speaker drive units are machined to a three-dimensional shape out of the solid baffle material, and act as carefully calculated sound guides generating outstandingly good dispersion characteristics, especially in the mid / high frequency range. The cabinet material is either HDF – for the lacquered versions – or solid wood for the hardwood versions. 

The completely new speaker drive units are our latest development, and incorporate the latest design features such as huge magnets, high-performance voice coils, special embossed cones and professional-standard aluminium baskets. They work together to provide a frequency response, maximum sound pressure and reproduction quality which have never been possible before.

The S 2100 CTL

The S 2100 is the medium-sized floor-standing speaker in the CTL series; although it is more compact it is still not small, as it measures a full metre in height. This size ensures that there is ample volume available for the transmission line, which in turn generates very powerful low bass at high volume. In terms of construction it is very similar to the S 2200 CTL; the only difference is that the woofers are slightly smaller. The two 17 cm bass units exactly mirror the 22 cm drivers of the larger S 2200 CTL in design and features. Their resonant frequency is low, they are matched to the transmission line just as accurately, and their extremely hard, embossed cones generate very deep, forceful and accurate bass.

Technology

As in its big sister, the speaker’s 15 cm mid-range, textile dome treble unit and sculpted “organic baffle” combine to form an acoustic unit which we have named CD = Constant Directivity. This is responsible for the speaker’s superbly spacious sound and outstanding radiation characteristics. The impregnated textile dome tweeter retains its lively, airy qualities even when reproducing extreme dynamic peaks, without any tendency to sound hard or sharp. Like all CTL loudspeakers the S 2100 CTL is fitted with a sophisticated double-sided three-way crossover unit (FSR). It is effortlessly capable of handling even the highest levels, and provides perfect control of the three frequency ranges. The speaker’s impressive imaging and dispersion characteristics over the full frequency range are a direct result of the design of the crossover. The S 2100 CTL is effortlessly capable of processing very high levels, and provides a quality of low bass previously considered impossible from a cabinet of this modest size. Nevertheless, its bass response is not quite a match for that of the S 2200 CTL. Like the latter, its refined, carefully developed design also makes it the perfect choice for reproducing the most delicate music with natural sensitivity. 

Specifications

Principle

Floor-standing speaker:  3-Way Transmission-line

Power rating

Nominal power rating:  200 Watts
Music power rating:  270 Watts
Impedance:  4 Ohms
Frequency range:  25 - 35000 Hz
Sensitivity:  88 dB

Drive units

Drive units bass:  2 x 170 mm
Drive units midrange:  1 x 150 mm
Drive units high frequency:  1 x 25 mm
Crossover frequencies:  220 / 2000 Hz

Dimensions

Dimensions H x W x D:  100 x 22 x 35 cm
                                       106 x 32 x 40 cm inkluding plinth
Weight:  31 kg
Technical modifications reserved

The above information is from the manufacturer.
Have a question? Connect with our Audio Gurus at 800-328-9973 or 215-862-4870 or Send email or use Contact form. You can also take advantage of our system matching expertise with a Free System Consultation.

T+A Elektroakustik Criterion S2100 CTL Speaker

More Views

  • High gloss carbon 93
  • Walnut dark 81
  • Arctic silver 96
  • Oak whitewashed 95
  • Rubbed lacquer black 12
  • Rubbed lacquer white 11 11

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