The AR-14 closely approaches the musical accuracy of the most expensive AR speakers at a significant saving in cost. It combines the superior bass performance of the AR-12 with the energy response of the AR-16.
The AR-14 employs a 10-inch acoustic suspension woofer installed in a cabinet of the dimensions normally used for our 12-inch units. The result is bass performance with extended range and very low distortion that is more than adequate for all music except perhaps the most demanding organ or electronic music recordings.
An appropriate balance between flat energy response and flat anechoic response enables the AR-14 to reproduce music with a high degree of accuracy under most listening conditions. In fact the AR-14 is uniform in its radiation over nearly as wide a range and solid angle as are AR's most expensive speakers.
This uniformity of response has been achieved by means of a crossover network designed with the aid of AR's large reverberant chamber located at our British laboratories.
This new chamber, together with the polyhedral chamber at our factory near Boston, permits a new level of reliability in the measurement of a speaker system's total energy output. In the case of the AR-14 these measurements have enabled AR engineers to directly evaluate the effects of the crossover network on the energy output of the system and to refine its design with considerable precision.
The cabinet molding of the AR-14 has purposely been kept small in order to eliminate audible interference effects that are normally caused by sound waves being reflected from cabinet projections. The AR-14 shares the appearance design of the AR-11, AR-10π and AR-12 speaker systems.
A two-position switch mounted on the rear of the cabinet provides a means of altering the contour of treble energy above 4000 Hz. The Normal switch position should provide the most accurate results in most listening rooms. The "Decrease" setting is useful in compensating for the occasionally harsh effects of more reverberant, or "live" , rooms.
Specifications
Type: 2-Way system
Power Handlig: 100 Watt Continuous Power
Impedance: 8 Ω
Frequency Response: 36 - 25,000 Hz.
Low Frequency Driver: 254 mm (10") acoustic suspension woofer
High Frequency Driver: 25 mm (1") dome tweeter
Efficiency: 86 dB SPL
Crossover Frequency: 1300 Hz
Crossover Network: Half section LCR network on each driver using air-core chokes, bi-polar electrolytic capacitors, and high-power nonindictive resstors, acoustic output of highrange driver is controlled by switchable contouring network.
Driver Resonance Frequencies:
Woofer : 26 Hz (free air) highrange 1000 Hz
System Low-Frequency Response: -3 dB at 44 Hz
Total Flux:
Woofer : 76,000 maxwells
Highrabge : 15,000 gauss
Volumen: 41,9 Liter.
Dimensions : 354 x 635 x 273 mm (13-15/16" x 25" x 10-3/4")
Weight: 15,9 kg (35 lb)
Nessun commento:
Posta un commento