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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





Infinity Reference 21i


Infinity Reference 21i
The Reference 21 i shares the 25mm soft dome tweeter with all the more costly models in the Reference Series. The unique catenary dome profile minimizes dome break-up at all frequencies for flat frequency response extending beyond 23 kHz combined with exceptionally low distortion. This driver offers an airy, open high frequency range which integrates perfectly with the 210mm woofer with APG cone which is port-loaded for additional punch in the bass region.
The bookshelf size of the Reference 21 i does not in any way compromise its ability to deliver a full-bodied, dynamic rendering of the music of your choice.

Specifications:
Model:  Reference 21i
Frequency Response: 45 Hz - 25,000 Hz, (±3 dB)
Crossover:  3,0 kHz
Sensitivity (2,83 V / 1m):  91 dB
Nominall Impedance:  6 Ω
Power Handling:  15 - 100 watts
DRIVERS:
High Frequency:  Tweeter  25 mm
Mid Frequency:  No
Low Frequency:  Woofer 210 mm
Vinyl Cabinet Finish:  Chatsworth Oak/ Black Ash
Dimensions (HxWxD):   470 x 274 x 276 mm
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