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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





Electro-Voice T350 VHF Driver

T350 Deluxe VHF Compression Driver

Designed to complement Electro-Voice deluxe high fidelity drivers, the T350 VHF driver combines smooth, extended high-frequency response with efficient performance. An integral diffraction horn couples the diaphragm to the air and assures the widest possible sound dispersion. This uniform distribution of sound energy is especially important in stereo reproduction to allow the largest possible listening area.

 

Exclusive Sonophase throat design is incorporated in the T350 VHF driver. Response is flat up to 4 or 5 kHz, after which destructive interference results from inability of the diaphragm to act as a piston. Increasingly higher frequencies cause the phase of sound produced at the diapragm periphery to shift with respect to sound produced by the diaphragm center-due to diaphragm deformation . In the Sonophase design, sound from the central portion of the diaphragm is delayed by the longer path length, restoring proper phase relationship and level as the frequency increases. The importance of the Sonophase throat design is paramount above 12 kHz, where sound must be taken from the center of the diaphragm and the periphery simultaneously; in this design this is accomplished without destructive interference or cancelation within the sound chamber. At lower frequencies where the diaphragm acts as a piston, and no phase shift is required in the path configuration, the longer central path length does not appreciably change the phase due to the longer wave lengths involved.

 

The single-wound self-supporting voice coil is epoxy-bonded to a phenolic impregnated diapragm. This extremely rugged assembly will withstand high power levels, and yet is light enough to follow precisely the complex VHF wave forms.

 


Specifications

Frequency Response:  3,500 to 23,000 Hz

Nominal Impedance:  8 Ω

Power Handling Capacity

RMS :  5 watts

Program :  50 watts

Peak :  100 watts

Voice Coil Diameter: 1"

Magnet:  1 pound Alnico V

Recommended Crossover Frequency:  3,500 Hz

EIA Sensitivity Rating:  60 dB

Dimensions

Horn (H x W):  7-1/4" x 2-7/8"

Pot Diameter :  3-1/2"

Overall Depth :  4-3/8"

Baffle Opening :  2-3/8" x 4-7/8"

Net Weight:  7 pounds

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