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

Sansui LM-110 (1976)

Sansui has again challenged traditional thinking in speaker system design. And again the results mean spectacular improvements in reproduced sound under actual listening conditions in your home. The new LM Series represents not just a revolution in design but a re-evaluation of high fidelity reproduction standards as well. Another great step in the realistic world of musical sound.
The unique multi-radiation baffle for the LM (Linear Motion) tweeter driver utilizes back radiated sound energy to enhance the overall sense of perspective sound image resolution and location in actual stereo application. It features three exponential horns to channel some of the out-of-phase backradiated sounds of the tweeter into the listening field. Essentially this unusual design emphasizes certain phase difference relationships in multi-channel music to give us a greater sense of stereo perspective. The fact that the separately-baffled LM tweeter driver has very free movement against input signals means better transient response too much better.
The proof of these improvements is yours to enjoy in three LM models. LM-110 (35 watts peak),LM-220 (45 watts peak) and LM-330 (60 watts peak).

The LM Tweeter itself is a Sansui-exclusive Linear Motion Driver with a CCAW (Copper-Clad Aluminum Wire) voice coil to reduce moving mass and help improve transient response. The diaphragm features a steeply convex phase equalizer to eliminate phase interference inside the cone for better high-end response.

Since the LM Tweeter is mounted on a separate baffle, as explained below, it requires no back cap or cavity to block out the strong and potentially damaging high pressure waves created by the woofer in the enclosure. The die-cast aluminium frame on the tweeter itself is ported to correspond to the three openings in the multi-radiation baffle, and the tweeter diaphragm is free to move to and fro in linear response to input signals with fast rise time. The result is free Linear Motion in the air on in technical terms, better transient response. The pure sounds of the LM Tweeter prove the advantages over the blurred and muddy effects of less transient types at first hearing.

The low-frequency driver in the LM has a number of unusually advanced features for mor natural bass respons, making it the perfect mate for the improved LM Tweeter system.
The superlight woofer cone is formed by a special non-press molding process and features a unique multi-corrugation design to achieve for proper stiffness and internal loss to create a living bass tone. To suspend this cone without defeating its best qualities. Sansui engineers designed an accordion-crease surround itself of appropriate stiffness and acoustical properties. The concave equalizer in the throat of the cone is still another new Sansui design and it serves perfectly to improve response near the crossover frequency. Finally, the LM woofer features a particularly strong magnetic circuit and voice coil, further extending the unit's ability to respond with linear motion to even extremely high level input signals with proper damping for improved linearity.

Woofer: 165 mm (6½") Cone Type
Tweeter: 65 mm (2 ⁹/₁₆") Cone Type
Power Rating: 35 watts (peak)
Impedance: 8 ohms
Sensitivity: 90 dB/W (New JIS 1 m)
Frequency Range: 38 to 20,000 Hz
Crossover Network: 2-way 12 dB/oct L-C Parallel Type
Crossover Frequency: 2,000 Hz
Finish: Simulated wood grain
Dimensions (W x H x D): 248 x 534 x 194 mm (9-13/16 x 21-1/16 x 7-11/16 inches)
Weight: 8,1 kg (17,9 lbs) net, 18,2 kg (40,1 lbs) packed

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