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





Mission 70 loudspeakers

The Mission 70's innovative design results in a unique wide bandwidth system, free of unwanted resonances, distortions, frequency response anomalies, and colorations - remarkable for a loudspeaker in its size and price category.
The 70 is designed wiat an unusual cabinet construction. The drive units are mounted on Mission rigid particle baffle board while the carcass consists of a sandwich construction to distribute and dampen enclosure resonances. Carefully optimised drive units ensure the smooth bass performance essential in high quality system. The driver geometry is inverted in Mission's novel style. This combines with elegantly simple crossover networks to enhance phase coherence and produce an astonishing three - dimensional stereo stage.
Technically the frequency response is unusually smooth and well balanced. Whereas the competition has an irregular response often as poor ±5 dB the 70 measures flat to within ±2 dB. When measured off axis it exhibits no mid-band cancellations. The modulus of impedance is very smooth, remaining above 6 Ω and with minimal electrical phase angles.
The ensures that the speaker presents an easy load to amplifiers. Harmonic distortions are minimised even at low frequencies, and sensitivity high sound pressure levels even with modest amplifiers.
Specifications
Recommended Amplifer Power:  20 - 60 W/ch
Frequency Response:  60 Hz - 20 kHz ±3 dB
Sensitivity (ref. 2,83 V/1 m):  90 dB
Nominal Impedance:  6 Ω
Crossover Frequency:  3,400 Hz
HF Unit:  19 mm Polymer dome
LF Unit:  177 mm Plastiflexed cone
Terminals: 4 mm plug/wire
Dimensions (W x H x D):  210 x 350 x 210 mm
Weight:  10 kg

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