Audio Database

Milestone 405

Speaker system using full-range unit 405-8H.

The 405 to 8 Hz is a 4 inch (10 cm) full-range unit of the 405 Series. The high output sound pressure of 90dB/W/m is achieved by the magnetic circuit using urethane foam edge, cast frame and large magnet in the simple configuration of single cone / full range.

In order to take advantage of the mid-range of 405 to 8 h, it is designed so that the unit and the amplifier can be connected directly only by the connector without any intervening passive network circuit for adjusting the characteristics.

The enclosure is a bass-reflex structure using 12 mm thick Itaya amicorum maple laminate, and the exterior is covered with wood and layers.

Model Rating
Method 1-Way, 1-Speaker, Basref System, Bookshelf Type
Unit For All Bands : 4 inch Cone Type (405-8H)
Impedance 8 Ω
Playback frequency band 55 Hz to 15 kHz
Sound pressure level 90dB-SPL/W/m
Allowable input 15W AES / + 6 dB crest factor
60W (peak)
External dimensions Width 230x Height 380x Depth 220 mm
Weight 5.0kg