Assessments - 3, GPA: 3.7
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You already know of the ultralow distortion figures on the D-60, D-1 50, and DC-300 amplifiers — and the incredibly low S/N figures of the IC-150 Pre-amp. But, although aM speakers sound better with CROWN components, there has never been a transducer that could take full advantage of our component performance figures. That is, until the CROWN Auralinear line. Using the basic design idea of electrostatic theory, CROWN, in association with many top men in the field of electrostatic design has come up with a new electrostatic — one that is truly linear over the entire audible sound spectrum and beyond — AURALINEAR sound! Through the use of thinner membranes and improved production techniques, an electrostatic panel has been developed that has: 1) Extremely wide range — response between 350Hz and 32,000Hz — with no crossover between these frequencies. This lack of crossover between 350 & 32,000Hz produces a speaker with no phase shift interference patterns (no cancellations or additions at any point over the full range). 2) Because of the unique wide-range response, it is impossible to imbalance the midrange & tweeter. 3) At upper frequencies the mass of diaphragm effectively disappears contributing to the clean distortion free sound of the CROWN speaker. 4) Tolerance between wires that create the electrostatic field and the mylar diaphragm are kept so exact that variation in level produced from panel to panel is the lowest ever achieved. For the Bass section (below 350Hz), CROWN uses two - 10 inch woofers (one in the case of the ES 14’s) in an acoustic suspension environment. The long-throw characteristic on the woofer permits realistic excursions at frequencies as low as '/2Hz. The response of the CROWN woofer can be shown dramatically by watching it respond to the rumble on the quiet grooves of a record. Fundamental tones are solidly there. Yet, even in utilizing a separate woofer — it is impossible to hear the crossover point, even sweeping through it with a signal generator. Greater Sound Pressure levels are obtainable than were before possible in an electrostatic. Measurements done in a 12' x 25' living room show levels of 116-122dB with the amplifier below clipping. Yet, this speaker is capable of enduring huge sustained power levels over long periods. (Typically, the ES 224 has sustained the full output of the DC-300, with a music source, for several hours. Needless to say, we left the room during this period.) The speaker showed no signs of stress, and only practical time limitation and the neighbors prevented us from continuing the test. In addition, both the electrostatic and woofer sections are protected from over load by solid state circuit boards (separate circuits for each section), coupled with a resettable circuit breaker. Both visual and audible overload indications are provided. Visit your audio specialist and bring your own source material. The better your source material is, the more exhilarating the experience will be. WARRANTY: The Crown Auralinear Line of Speakers is backed by the Crown total warranty! 3 years parts and labor and shipping to and from Crown. ES - 212 ES - 224 Speaker Complement 2 - 10", 12-HF-150 2 — 10", 24-HF-150 Usable Frequency Response in Recommended Max. Room 22 Hz 30 kHz 22 Hz - 30 kHz Crossover Frequencies 375 Hz 350 Hz Recommended Max. Room Size 4000 Cu. Ft. 6000 Cu. Ft. Recommended Max. Amp Power 75 watt 150 watt Dimensions: Tweeter 26x21x12 Deep 26 x 39 x 12 Deep Woofer 26 x 21 x 16 Deep 26 x 21 x 16 Deep Power Requirements 115 v, 60 Hz, 3w 11 5 v, 60 Hz, 3w Special Features: 1. Dacron damping material in woofer enclosure. 2. Woofer exhibits absolutely no peakiness over entire range. 3. Seamless electrostatic response above 350 Hz from an all new extended range electrostatic high frequency radiator. No crossover points between 350 Hz and 30 kHz. ES - 212 Speaker Complement ES - 26 2 10" loaded 6-HF-100 Usable Frequency Response in Recommended Max. Room Crossover Frequencies Recommended Max. Room Size Recommended Max. Amp Power Dimensions Shipping Weight Power Requirements Special Features: 1. Dacron damping material in woofer enclosure. 2. Woofer exhibits absolutely no peakiness over entire range. 3. Seamless electrostatic response above 1500 Hz. 25 Hz 30 kHz 1500 Hz 4000 Cu. Ft. 75 watt 24 x 27 1/2 x 12 Deep 70 lbs. 115 v, 60 Hz, 3w ES - 26 ES - 14 THO U.S.A. Aœ 141*8-72 ES- 14 Speaker Complement 1—10" 4-HF-100 Usable Frequency Response in Recommended Max. Room 30 Hz — 30 kHz Crossover Frequencies 1500 Hz Recommended Max. Room Size 2500 Cu. Ft. Recommended Max. Amp Power 40 watt Dimensions 18 x 27 1/2 x 12 Deep Shipping Weight 60 lbs. Power Requirements 115 v, 60 Hz, 3w Special Features: 1. Dacron damping material in woofer enclosure. 2. Woofer exhibits absolutely no peakiness over entire range. 3. Seamless electrostatic response above 1500 Hz. СГОШП inTernationai DIVISION OF INTERNATIONAL RADIO AND ELECTRO...