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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





Dahlquist M909 loudspeaker

The Dahlquist "M Series" ends the need for compromise. Originally designed for recording and broadcast studios, several models can now be offered for home use because of new techniques. In the Dahlquist tradition, the M Series solves many of the problems that still degrade the sound of other speaker systems. The Dahlquist M Series loudspeakers are the first fully enclosed systems to reproduce all the of the subtle, low level details of the music in the midst of extremely high level music signals. The reproduction of such dynamic shadings makes music come startlingly alive.

The Dahlquist M909

The M909 is a unique blend of technologies. This three-way system has the Dahlquist Un-Box enclosure and critically matched loudspeaker drivers, as do the other members of the M Series. But, in an exciting departure, the M909's specially designed midrange driver shares the cylindrical loading originally developed for the DD-20. as a result, the M909 not only gives the listener superb performance throughout the audio range it gives an extra measure of performance in the critical midrange, where most of the music "happens".

 


By using two matched high speed woofers, the M909 is able to deliver exceptional power in the bass and mid-bass regions. This brings home the type of sound power felt at a live concert -  and typically missing from home listening. These dual matched woofers have the additional benefit of providing a seamless transition to that all-important midrange.

Further, the M909 recreates a sound image of exceptional fidelity. The M909's reproduction of soundstage height, width, and depth draws the listener into the performance. These outstanding capabilities are apparent as life-sized images in space.

Thus, for the first time, experienced listeners can have it all-from a single loudspeaker system that fits in almost any size room, be it an intimate studio with a modestly powered receiver or a living room of generous proportions with high-powered, state-of-the-art electronics.

One of the hallmarks of Dahlquist loudspeakers is the coherency of the total sound. The M909's four drivers blend together seamlessly. As a result, harmonic relationships are accurately preserved. Individual instruments, and especially the human voice, retain their own distinct characters.

Naturally, as is expected from a Dahlquist loudspeaker system, the M909 incorporates as advanced and remarkable anti-diffraction technique which enhances accurate stereo imaging and greatly contributes to open, spacius, and accurate sound reproduction.