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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Showing posts with label MAGNEPLANAR. Show all posts
Showing posts with label MAGNEPLANAR. Show all posts

Magneplanar MG-II loudspeakers

We'd like to have a word with you. It's about Magneplanar loudspeakers. The word is "revolutionary". Revolutionary design concept; revolutionary sound reproduction, revolutionary beauty. In fact the Magneplanar system is patented because of the unique principles on which it operates. The Speaker are designed to be seen and not heard. So if you're listening to music, all you hear is music, not annoying vibrations from speaker cabinets and cavities. The first time you see Magneplanars you'll know something new is going on. They look like beautiful decorator screens. Or handsome room dividers. We know you've heard the word "revolutionary" before. But you've never heard anything like Magneplanars before.

 

What is Magneplanar?

The Magneplanar loudspeakers is a totally new type of loudspeaker. It is neither a cone type speaker, nor is it an electrostatic. The actual speaker itself is only about 1/8th inch thick. Its construction consist of a large area (planar) permanent magnetic field with a very thin film diaphragm stretched over it. The audio current is carried by conductors which are attached to the diaphragm in a zig-zag fashion.

As the audio current passes through the conductors, the interaction between the magnetic field around the conductors and the permanent planar magnetic field under them causes the entire diaphragm to pulsate. This creates sound waves in the air which is the sound your hear.

 

A few of the important characteristics of Magneplanars

Purely resistive impedance for ideal amplifier loading

Puts out same sound front and back (bi-polar radiator)

No cavity or cabinet wall resonance to colour sound.

Superior transient response throughout entire audio range due to low mass of diaphragm

Distortion level far below other loudspeakers because of complete control of diaphragm

Can be placed to look more like part of furnishings than a loudspeaker

56" long, 1-1/2" wide tweeter section provides horizontal sound dispersion previously unattainable

Fantastic power handling capability

Large radiating area provides width and height and depth of sound only equalled by live performances

The bi-polar radiation of Magneplanas provides a means of optimizing stereophonic and quadraphonic sound imaging.

 


Specifications

System:  Two-way full-range Magneplanar

Midrange/Bass Radiating Area:  500 sq. In

Tweeter Radiating Area:  85 sq. In

Frequency Response:  60 Hz to 18,000 Hz ±4 dB

Power Handling:  up to 200 watts RMS per channel (without equalization)

Minimum Power Required:  Depends of type of listening. If you are a background music listening, 15 - 25 watts might be sufficient. In most cases 40-50 watts is recommended

Efficiency:  85 dB SPL

Impedance:  6 Ω

Crossover System:  2400 Hz

Finish:  Walnut hard wood and light colored fabric

Dimensions (W x H x D):  22" x 71" x 2"

Weight:  41 pounds each


 

Magneplanar MG-IIc speakers

Magneplanars provide unique styling not available in box speakers. With optional trim and fabrics, Magneplanar Screens can blend or contrast with the surrounding decor, thus forming a backdrop in the same manner as curtains or drapes. With Magneplanars you have the ability to add a pair of speakers to your living area without adding the visual "weight" of box speakers. Magneplanars are easily moved for vacuuming or repositioning to other listening areas.

 

Magneplanar MG-IIc (and MG-Ic), these models are of similar design , both representing excellent value. The MG-IIC is one foot taller than the MG-Ic, providing better vertical dispersion and extension of the frequency extremes. Both models appeal to a wide range of listening tastes. For the classical music enthusiast, the critical midrange of the MG-IIc is often the speaker of choice. Having been introduced in their original versions many years ago, these speakers have benefited from years of gradual refinements.

They highlight Magnepan's belief that there should be no change for the sake of change. Improvements over earlier versions include a reduction in diaphragm mass, refinements in magnetic structure, improved crossover design, more rigid panel construction, inclusion of bi-amplification option, and improved diaphragm mass distortion.

Both models are worthy of the finest ancillary equipment and source material, and are remarkable in their respective price ranges.

 


Specifications

System :  Two-way full-range dipole radiator

Midrange/Bass Radiating Area:  500 sq/inch

Tweeter Radiating Area:  68 sq/inch

Frequency Response :  40 Hz - 18,000 Hz ±4 dB

Minimum Power Requirement:  50 watts RMS

Maximum Recommended Power :  can be safely used with amplifier up to 200 watts RMS per channel, when fused per instructions

Sensitivity:  84 dB (1 Watt/ 500 Hz / 1 m)

Impedance:  5 Ω  at any frequency (purely resistive)

Crossover System:  400 Hz to Low-pas); 1600 Hz to High-pass (6 dB/octave)

Finish:  Panels covered with off-white, black or brown fabric, with oak trim

Dimensions (W x H x D) :  22" x 71" x 2"

Weight:  45 lbs (each)

Magneplanar SMGa


SMGa features:
Planar-Magnetic-Driver
Low Mass - .0005 inch diaphragm
Bi-Polar Design - No cabinet to color sound
Direct Coupled - No transformer is necessary. Subtle detailing is maintained with no dynamic compression
Mirror-Imaged - for stable stereo image
Linear power response - No compression of dynamic range
Superb Power Response
High Power handling
Flat Impedance - for ideal amplifier loading
Accurate Phase response

SMGa - incorporates most of the unique qualities of the large expensive models, at an affordable price. This smallest and most popular models is for the serious music lover on a budget and works best in smaller listening rooms. The SMGa can be placed against the wall when you are listening to backgound music or pulled out 2 or 3 feet to appreciate their full potential. The SMGa is our most efficient model and can be driven with smaller receivers and amplifiers or can be part of a serious sudiophile system, utilizing the best of equipment.
The music lover on a budget can now  own a music system that will bring him or her much closer to the excitement of a live performance. Available in three trims (oak, brass, or chrome), and three fabric colors ( off-white , black or brown).

Specifications:
Type:  2-way, Full-Range, Planar/Magnetic Speaker System
Frequency Response:  50 Hz to 18 kHz ±3 dB
Recommended Power:  40 to 150 Watts RMS (8 Ω)
Sensitivity:  90 dB (1 watt/1 m)
Impedance :  4 Ω, Resistive
Dimensions:  24-1/4" x 48-9/16" x 1-3/4"
Weight:  28 lbs