Eclipse TD725sw Mk2


Eclipse TD520SW – a stunningly accurate dual-cone subwoofer from Eclipse TD
Featuring two subwoofers with a diameter of 20 cm the user has flexibility of positioning while maintaining bass sound reproduction at the world’s highest level. The TD520SW, is equipped with a compact digital power amplifier that has good energy conversion efficiency while also maintaining the high volume efficiency of the product. Like the TD725SWMK2, the TD520SW is equipped with two input systems each provided with an independent audio volume and low-pass filter with consideration of the convenience of those people using the product in stereo or surround mode

Eclipse TD


Eclipse 725sw Mk2 – takes the legendary Eclipse TD subwoofer range to new depths of power and speed boasting massively powerful, amazingly accurate and tight bass

A revolutionary subwoofer that has evolved in terms of performance, function, and design, from the previous award-winning model which consecutively received the highest rating from Japanese and overseas audio magazines. ECLIPSE has introduced unique state-of-the-art technology including its R2R TWIN DRIVER structure, which reproduces voluminous bass sounds at high response speed with a minimized delay. ECLIPSE is in an ongoing pursuit of excellent damping properties so that users touching the enclosure will not feel any vibration at all. Furthermore, the product is provided with seven-layers of piano black coatings to produce both purer bass sound reproduction as well as visual beauty.

Eclipse 725sw Mk2

A large speaker unit is traditionally required to reproduce rich and powerful bass sounds. If a larger speaker is used, the area of the speaker that presses the air and the weight of the diaphragm will increase, thus making it difficult to control the movement of the diaphragm quickly. Therefore, ECLIPSE’s subwoofers do not adopt large-diameter speaker units. Instead, they use original speaker units that are comparatively small in diameter so that they can be driven at high speed. Furthermore, each model uses two speaker units, thus achieving the reproduction of bass sounds and high power that is equivalent to large-diameter speaker units.

In order to drive speaker units at high speed, strong bases are required to secure the speaker units. For example, ECLIPSE’s speaker units are secured to ground anchors to form tough bases. In this instance, ECLIPSE’s subwoofers connect two speaker units facing back to each other with an aluminum shaft instead of ground anchors. The two speaker units are driven in-phase, the generated reaction force of which forms a strong base in place of a ground anchor.

2x25cm Diameter Subwoofers
ConfigurationR2R Twin Drive-Units, Sealed Enclosure
Speaker Unit2 x 25cm Diameter Driver, Paper(Kevlar)
Frequency Response20Hz-150Hz (-10dB) (at Bass Mode, L.P.F. 150Hz)
Rated Output500W(T.H.D.1%)
L.P.F30Hz-150Hz(Variable, On & Off)
Phase Adjustment0/180° (Remote Control or Front Panel)
Play ModeBass/Direct (Remote Control or Front Panel))
Harmonic Distortion0.05% Max (at 50Hz, 1/2 Rated Output)
S/N95dB Minimum
InputLine (Stereo) 2 / Speaker Level 1
XLR (Stereo) 1 (2nd Hot)
Input Sensitivity50mVrms(at 500W Output)
Input Impedance10kΩ by Line/XLR
3kΩ by Speaker Level
OutputLine (Stereo) 1 / Speaker Level 1
Power Consumption110W (Stand By: 0.5W)
Maximum Dimensions(mm)
W545 x H500 x D524
WeightApprox. 51kg
AccessoriesGrille x 2, Remote Control x 1, Power Cable x 1, FeltFeel x 4


Eclipse TD

Eclipse TD
Eclipse TD