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





Tannoy Canterbury 15

 The Canterbury 15, like its smaller brother, employs an Alcomax 3 version of the classic Tannoy Dual Concentric driver. For this drive unit a substantial high pressure die-cast 15-inch chassis is used.
This high-performance drive unit is installed in a cabinet where "attention to detail" is the byword. Birch ply, from Finland, is used for both the carcass construction and its substantial bracing. The cabinet is then finished in selected burr walnut wood veneers and completed with rich mouldings in solid walnut.
Gold-plated terminals are employed and give the option of bi-wiring. Van den Hul cable is used throughout the loudspeaker. 
 Along with the hard-wired crossover network and acoustic source aligning system this top-quality cable ensures minimal signal loss. Both treble level and roll-off can be adjusted by means of high-current switch blocks. Low frequency output can be tuned to suit any room and personal taste using Tannoy's unique Variable Distributed Port System.
The Canterbury 12 and Canterbury 15 loudspeakers are made to special order only. They are supplied with a certificate of ownership and a polished brass nameplate engraved with the name of your choice. Both are destined to become true heilrooms.

Specifications
Power Rating:  125 watt RMS (550 watt peak)
Recommended Amplifier Power:  50 - 250 watt/channel
Sensitivity ( 2,83 V at 1 m):  96 dB
Maximum SPL:  117 dB at 1m for 125 watt RMS (124 dB at 1m for 550 watt peak)
Nominal Impedance:  8 ohm
Minimum Impedance:  5,5 ohm
Frequency Response:  28 Hz - 22 kHz , ±3 dB
Crossover Frequencies:  1,1 kHz
Crossover Control:
 ±3 dB over 2,3 kHz to 22 kHz shelving;
+3 dB to -6 dB per octave over 3,4 kHz to 22 kHz slope
Crossover Type:  Bi-wired, hard-wired, passive, low-loss, time and impedance compensated Type 1091
Driver Type:  15-inch Dual Concentric High Compliance Type 3889
Enclosure Type:  Variable Distributed Port
Enclosure Volume:  235 litre
Dimensions (H x W x D):  1100 x 680 x 480 mm; (1180 x 680 x 600 mm packed)
Weight:  63 kg complete (70 kg packed)
Enclosure Material:  Solid walnut with birch ply

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