SONY SA-W70ES

Commentary

ES series active super woofer that adopts advanced SAW system.

The unit has 2 20 cm cone type woofers.
This unit uses a large magnet with a diameter of 120 mm, a large-diameter damper, and a voice coil. In addition, the cone paper is a non-prescone with strong elasticity and is fixed with a wide strong edge to realize a unit structure that is resistant to distortion even at large amplitude.

The enclosure uses the advanced SAW method, an improved version of the SAW method.
In the conventional SAW system, the unit is mounted on the sub-baffle inside the enclosure and the sound is emitted through the duct. In the advanced SAW system, the radiator (phase equalizer) is installed on the front baffle, which was closed in the past, the input resistance and the delay of the emitted sound can be prevented, so that the response to the signal and the deep low sound are compatible.

The amplifier section has a higher output than conventional models of the same level, and is a BTL connected amplifier to obtain a sound with a sense of weight.
A large-capacity audio condenser is also used.

In consideration of the acoustic characteristics of humans, we have incorporated a correction circuit that increases the volume of the deep bass sound, which is difficult to hear at low volume, and approaches the flat characteristics as the volume increases.

The high-cut frequency is continuously variable.

It has a line output terminal to which a second subwoofer can be connected.

Model Rating

Method	Built-in Amplifier / 1-Way / 2-Speaker / Advanced SAW System ・ Floor type ・ Magnetic protection design
Unit	For Ultra Low Band : 20 cm Cone Type x2
Playback frequency band	18 Hz to 150 Hz
High-cut frequency	50 Hz to 150 Hz
Maximum practical power	250W
Pwer	100 VAC, 50Hz/60Hz
Power consumption	165W
External dimensions	Width 255x Height 630x Depth 520 mm
Weight	Approx. 27 kg
Attachment	Speaker Cable 3mx2 One audio cable