ADS L730

 The ADS L730 3-Way Loudspeaker System

Although similar to its predecessor, the much acclaimed ADS L630, the L730 merits a new model designation because of major component changes and performance improvement. The all-new L730 is, arguably, one of the most significant advances in bookshelf speaker design in recent history. It produces surprisingly deep, tight bass for a speaker of it size thanks to a new 10" ADS Stifflite woofer. A new midrange driver delivers uncanny accuracy in reproducing critical human voice. It is unexcelled in open, clean, and airy reproduction of highs, attributes associated with the state-of-the-art. ADS 3/4-inch soft-dome tweeter. A direct outgrowth of ADS' research and development of monitor spaekers for digital recording sessions, the l730 naturally provides excellent stereo imaging and unusually wide dynamic range.

Features

New 10-inch ADS Stifflite woofer has tapered "honeycomb" cone construction for high internal damping, optimum mass/stiffness characteristics, and low total moving mass; bass is deep , yet tight and highly controlled; extra-long-excursion design and high-temperature voice coil ensures superb linearity,  wide dynamic range, and high power-handling.

New 1½ inch ADS acoustic suspension soft-dome midrange driver takes advantage of most recent materials technology and precision manufacturing techniques; driver has unprecedented low distortion, low coloration and wide dynamic range.

The proven ADS 3/4-inch acoustic suspension soft-dome tweeter delivers unmatched high-frequency performance; smoothness, extension, and dispersion are second to none; very high force/mass ratio ensures excellent damping and transient response, and contributes to efficiency and low distortion; ADS' unique single-layer, high-thermal-conductivity metal voice coil ensures high power-handling capability for wide dynamic range.

Precision crossover network seamlessly matches driver outputs with minimal distortion and power loss; highest guality network components ensure stable, reliable performance over years of use.

Choice of oak or walnut cabinet with radiused edges and soild oak/walnut edge reinforcements.

New acoustically transparent grill lends distinctive appearance while eliminating grill-frame structure for reduced difraction and improved dispersion.

New user-interface panel features heavy-duty binding-post connectors and readily accessible tweeter fuse with built-in spare.

Specifications L730

Frequency Response:  30 - 23,000 Hz, ±3 dB

Impedance:  6 Ω (nominal);  4 Ω (minimum)

Efficiency:  92 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, 1½" diameter, with single-layer, high-temperature metal voice coil; magnetic flux density - 1,5 Teslas (15,000 Gauss); magnetic flux - 1,000,000 nanWebers.

One long-excursion, high-compliance woofers, 10" diameter, with 1½" high-temperature voice coils and tapered Stifflite cone; magnetic flux density - 0,9 Teslas (9,000 Gauss); magnetic flux - 850,00 nanoWebers.

Crossover:  12 dB/oct at 550 Hz and 4,000 Hz

Power Rating:  100 Watts (nominal),  175 Watts (max. Peak program)

Recommended Amplifier Power:  20 Watts minimum - 200 Watts maximum

Dimensions (H x W x D):  25½" x 14⅛" x 11¾"

Weight:  Approx. 42 lbs (19 kg)

Cabinet:  Select natural walnut over extra-high-density particle board, solid oak or walnut edge inserts.

Baffle:  Piano black finish with diffraction-corrected flush driver mounting.

Grill:  Acoustically transparent removable frameless grill in complementary finish.

Suggested Retail Price :  $ 365.00 each

Availability: Summer, 1980

Optional Accessory: ADS F800 black metal base, $33,00 each