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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 SP12B loudspeaker

 The Model SPB12 (and SP12) may be used as low-frequency drivers in expanded separate 2 and 3-way systems. In this application, the operation of these units is comparable to the E-V Models 12 W and 12BW LF drivers. Compatible components for use with these drivers are shown on the 'Building-Block Method" Compatibility Chart.

 

Specifications

Frequency Response:  30 - 13,000 Hz

RETMA Sensitivity Rating:  46,5 dB

Free-Space Cone Resonance:  40 - 50 Hz

Impedance:  16 Ω 

Power Handling Capacity

Program :  20 watts

Peak :  40 watts

Criticasl Damping Factor

In Aristocrat enclosure:  4.0

In an infinite baffle:  2.5

Voice Coil Diameter:  2-inch

Magnet Weight:  1 lb

Mechanical Crossover:  3500 Hz

Dimensions

Diameter :  12-1/4" (6": d. overall)

Mounting:  11-1/2" diameter (four 1/4" holes equally spaced on circle)

Baffle Opening:  11"

Net Weight:  8-3/4 lbs

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