ALTEC LANSING MK-4
Price unknown (1 unit, around 1991)
Commentary
A speaker system designed as a bounce monitor speaker mounted on a stage.
The MK series is a product of ALTEC Sound Development (ASD), a brand established by Elektri, and is a Japanese systematized version of ALTEC products.
The low range is equipped with ER15 which is 38 cm cone type woofer.
A horn type unit that combines manta ray Lehorn MR931-12 and driver unit 902-8B is installed in the high range.
The MR 931 / 12 manta ray Rhee Horn, which is a constant directional horn, has been used to minimize sound propagation on the stage.
The cabinet has a bass reflex design based on the Thiele & Small theory.
Plywood is used as the material, and FRP coating has been applied to the surface.
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Model Rating
| Method | 2-Way, 2-Speaker, Bass Reflex System, Bookshelf Type |
| Unit | For Low Band : 38 cm Cone Type (ER-15) For High Range : Horn Type (MR931-12 + 902-8B) |
| Frequency characteristic | 50 Hz to 20 kHz |
| Impedance | 8 Ω |
| Allowable input | 65W |
| Output sound pressure level | 103dB |
| Crossover frequency | 1.5kHz |
| Maximum external dimensions | Width 690x Height 483x Depth 490 mm |
| Weight | 27kg |