Audio Database

The

ESS LS4
a price -- unknown (one set, at the 1970s time?)

Description
 
The floor type speaker system developed as a highest-class model of Tempest series.

The small heil driver is adopted as a high region.
The accordion pleats made from Teflon are placed into the powerful magnetic field, and the heil driver has the structure where the element (electric conduction belt) was embedded on the side of each pleat of a pleat.
If a signal is impressed to this element, current will flow, by motion of a pleat, air is compressed and sound is emitted to space.
In order that a voice coil may emit sound to space directly by this operation, the outstanding dumping characteristic and low distortion are realized.

The low-pass play is improved by having adopted the 25cm corn type Woofer as low-pass, and also carrying a 25cm passive radiator.

the enclosure -- being alike -- oak material is used.


Rating of a mode
System 2 ways, 2 speaker passive radiator system, and a floor type
Use unit For low-pass: 25cm corn type
For high regions: Small heil driver (electrostatic type)
Others: 25cm passive radiator
Frequency response 35Hz-20kHz±3dB
Output sound pressure level 96dB/W
Allowable input 160W Clean Power
Crossover frequency 2.4kHz
Dimensions Width 318x height 889x depth of 308mm
Weight 22kg