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

Altec Lansing Model One II

 The second generation of Altec Lansing Bookshelf Models
Perhaps more than any other single audio component, the speaker-on-the-shelf has come to represent Hi-Fi. Its classic design and compact size have made it a favorite the world over. But all bookshell speakers are far from being equal.
At Altec Lansing, have always believed that their speakers should deliver outstanding performance.
So Altec Lansing  invest years of research and refinement in evry product their make. The result of this effort is the Series II Bookshell  Line.
Five speakers - each an exceptional performer. Each made better by subtle changes in acoustic design, construction techniques and material selection. Changes like the new hybrid magnet designfound in the Models one through Seven.
 Until now, speaker magnet structure design was either of the traditional Alnico or ceramic type.
The Alnico type uses a voice coil that surrounds the magnet. It has been found, however, that the interaction of the voice coil and the magnet will eventually cause the magnet to partially demagnetize. The result is a loss of sensitivity and a muddy bass sound. The ceramic magnet poses a different problem. Here the voice coil moves around the pole piece and is surrounded by the magnet. The thinner magnet, however, creates a clearance problem for the voice coil.
The Altec Lansing hybrid magnet design  combines the best of both magnet types. The new design still has the magnet around the voice coil, but the new "top hal" design eliminates the clearance problem.  Of course the one thing we would never change is the quality that Altec Lansing is known for. We still mke all our speaker components and all our bookshelf speakers are finished with real wood veneers.
So if you're looking for top performance combined with the classic appearance of a bookshelf speaker,  search the Altec Lansing for a demonstration of the Series II Bookshelf speakers.
Speaker Components:
Low Frequency :  8" bass driver
High Frequency :  4" frame cone driver
Nominal Impedance:  8 Ω
Crossover Frequency:  3500 Hz
Enclosure Type:  Sealed
Sensitivity:  89 dB (SPL)
Frequency Response:  50 Hz - 20 kHz
Vertical :  120° at -6 dB
Horizontal :  125° at -6 dB
Long Term Broad Band Maximum Power:  30 watts
Amplifier Operating Range:  10 watts to 75 watts
Long Term Maximum Acoustic Output:  104 dB SPL at 30 watts
Finish:  Hand-rubbed oiled walnut
Grille:  Acoustically transparent brown knit fabric mounted on removable frame.
Dimensions (H x W x D):  570 x 305 x 280 mm (22 ½" x 12" x 11")
Net :  11,8 kg (26 lbs)
Shipping :  27,2 kg (30 lbs) 2 units per carton

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