The Mercury MkII loudspeakers share the advantage of high power handling and sensitivity with low distortion and smooth frequency response - qualities which have ben the hallmark of Tannoy high fidelity loudspeaker systems for many years.
Loudspeaker Enclosures
To provide optimum performance a loudspeaker cabinet must be rigidly constructed and acoustically treated. The Mercury MkII is constructed from high density particle board lined with an acoustic material to absorb internal reflections and eliminate standing waves. The cabinet is internally braced at antinodal points to minimise cabinet resonance and colouration and the narrow front profile ensures good horizontal dispersion. Low frequency loading of the system is provided by a carefully designed ducted port which reduces distortion and extends the bass response. Each loudspeaker is fitted with a detachable grille of acoustically transparent cloth stretched over a wooden frame.
Drive Units
High frequencies are produced by a polyamide dome treble unit which combines a very smooth response with low distortion and wide dispersion and gives a finely detailed sound. A magnetic cooling Ferrofluid is incorporated and combines high power handling capacity with reliability and protection against sudden overload transients. The asymmetrical front plate is sculptured to improve reproduction by reducing diffraction effects.
Low and midrange frequencies are reproduced by a 200 mm polyolefin cone unit. This cone material gives a very smooth frequency response with negligible colouration. A newly developed cone/coil apex configuration provides a very rigid construction at the point where the cone is driven by the 4 layer high temperature voice coil.
Crossover Network
The crossover network receivers the electronical signal containing the fill frequency spectrum from the amplifier and divides it between the bass/midrange unit and the soft dome treble unit. We use only high quality components, including low loss solid dielectric capacitors and generously rated resistors and inductors. All components are hard wired and internal wiring is by heavy duty cable to minimise signal loss. All components are securely mounted to ensure maximum reliability and freedom from resonance.
Amplifier Power
In our loudspeaker specifications we recommend a suitable range of amplifier powers. The peak power handling capability of all Tannoy Loudspeakers will allow higher amplifier powers to be used with wide dynamic range material. Care must be taken with all amplifiers, irrespective of power output, to avoid abnormal conditions such as switch on surges or amplifier overloading (clipping and distortion) which may result in peaks of power greatly in excess of the specified ratings, and possible subsequent damage to the loudspeaker.
Specifications
Recommended Amplifier Power (RMS per channel into 8 Ω ): 10 - 120 watts
Peak Power Handling: 120 watts
Impedance (Nominal): 8 Ω
Sensitivity (for 1 W at 1 m): 93 dB (domestic); 90 dB (Anechoic)
Frequency Response; 52 Hz - 23,000 Hz ±3 dB
Phase Response: better than ±45° between 120 Hz - 10 kHz
Crossover Frequency: 3 kHz
Crossover Type: First order low pass , Second order high pass, Hard wired low loss
Apparent Acoustic Source: 59 mm behind front surface of baffle
Bass/Mid-range Unit: 200 mm (8") 2088G
Treble Unit: 28 mm (1,1") 0248G Polyamide
Horizontal Dispersion: Greater than 150° up to 12 kHz
Cabinet Volume: 19,5 litres (0,72 cu.ft)
Cabinet Construction: 12/15 mm high density particle with 12 mm shelf brace
Bass Loading: Overdamped offset ducted port
Cabinet Damping: Specialist acoustic product
Grille Construction: Acoustically transparent cloth over wooden frame
Dimensions (H x W x D): 498 x 249 x 300 mm (21,5" x 23" x 11,8")
System Weight: 7,1 kg (15,6 lb) each
Shipping Weight: 16 kg (35,2 lb) pair