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





ADS L710


 The ADS L710 3-Way Loudspeakers Systems
It is difficult to think of a popular speaker system that has endured as long as the ADS L710 have. It is also difficult to imagine that these two 3-way systems, already refined to the highest degree, can be further improved. But for 1980, the new ADS L710 boast several improvements from the inside out. Now  in  their generation of refinement, the l710 continue to uphold the same standards of sonic performance which have made them two of the most popular bookshelf speaker systems ever produced.

Features
Celebrated ADS dual-woofer/dual-chamber design with new ADS Stifflite woofers for improved bass efficiency and accuracy.
The new 2-inch acoustic suspension soft-dome midrange driver has a stronger magnet assembly for greater linearity,improved efficiency and transient performance, and lower distortion.
The 3/4-inch acoustic suspension soft-dome tweeter boasts the lowest moving mass among drivers of its type (including tweeters which employ esoteric materials, such as beryllium); excellent force/mass ratio assures lightning-fast transients, superb damping, and extremely low distortion; small diaphragm diameter ensures highly uniform dispersion and smooth, airy sound quality.
A newly designed crossover network works in conjunction with the new woofers and midrange to deliver improved linearity, efficiency and less pronounced room-boundary effects.
New cabinets feature radiused edges with soild walnut reinforcement inserts.
New acoustically transparent grill lends a distinctive appearance while eliminating grill-frame structure for reduced diffraction and improved dispersion characteristics.
New user-interface panel features heavy-duty binding-post connectors and readily accessible tweeter fuse with built-in spare.



Specifications L710

Frequency Response:  40 - 23,000 Hz, ±3 dB;  25 - 30,000 Hz, ±5 dB
Impedance:  6 Ω (nominal);  4 Ω (minimum)
Efficiency:  93 dB SPL with 2,8 V RMS (1 watt) pink noise input measured at 1 m in typical listening room (2000 ft³)
Driver Complement: 
One acoustic suspension soft-dome tweeter, ¾" diameter, with single-layer, high-temperature metal voice coil; magnetic flux density - 1,8 Teslas (18,000 Gauss); magnetic flux - 325,000 nanoWebers.
One acoustic suspension soft-dome midrange driver, 2" diameter, with single-layer, high-temperature metal voice coil; magnetic flux density - 1,55 Teslas (15,500 Gauss); magnetic flux - 1,450,000 nanWebers.
Two long-excursion, high-compliance woofers, 7" diameter, with 1" high-temperature voice coils and tapered Stifflite cones; magnetic flux density - 0,85 Teslas (8,500 Gauss); magnetic flux - 500,00 nanoWebers.
Crossover:  12 dB/oct at 550 Hz and 4,000 Hz
Power Rating:  75 Watts (nominal),  150 Watts (max. Peak program)
Recommended Amplifier Power:  15 Watts minimum - 150 Watts maximum
Dimensions (H x W x D):  21⁵⁄₈" x 12¼" x 10½"
Weight:  Approx. 35 lbs (16 kg)
Cabinet:  Select natural walnut over extra-high-density particle board, solid walnut edge inserts.
Baffle:  Piano black finish with diffraction-corrected flush driver mounting.
Grill:  Acoustically transparent removable frameless grill in bronze finish.
Suggested Retail Price :  $ 325.00 each
Availability: Summer, 1980
Optional Accessory: ADS F700 black metal base, $32,00 each

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