ALTEC LANSING Model 511
¥ 540,000 (1 unit, around 1990)
Commentary
Tall boy type 3-way speaker system.
Two 25 cm cone woofers are installed in the low range, and a 16 cm cone mid-low unit is installed in the middle range.
Carbon fiber vibration plates are used for these units.
A 5 cm dome type squaker is installed in the middle and high range, and a 2.5 cm dome type tweeter is installed in the high range.
These units use a polyimide resin diaphragm coated with diamond.
The enclosure is hermetically sealed.
In addition, walnut natural wood is used for the whole exterior finish.
It uses a large gold-plated connector for multi-amplifier and multi-wiring.
An attenuator for each unit is mounted on the top of the enclosure.
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Model Rating
| Method | 4-Way, 5-Speaker, Sealed System, Tall Boy Type |
| Unit | For low band : 25 cm cone x2 For middle and low band : 16 cm cone type For Middle and High Areas : 5 cm Dome Type For high-pass : 2.5 cm dome type |
| Impedance | 4 Ω |
| Rated input | 150W |
| Max Input | 300W |
| Output sound pressure level | 92dB/W/m |
| Crossover frequency | 180 Hz, 1.5 kHz, 3.5 kHz |
| External dimensions | Width 330x Height 1,450x Depth 343 mm |
| Weight | 49.9kg |