Product Description
Featuring two subwoofers with a diameter of 20cm the user has flexibility of positioning while maintaining bass sound reproduction at the world’s highest level. The Eclipse 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. Furthermore, all operations, including input selection, are possible via the included remote.
Speaker Units
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.
Aluminum Shaft Coupling
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.
Floating Structure
If speaker units are mounted directly to an enclosure, the vibration of the speaker units may cause unwanted sounds that do not exist in the original sounds. ECLIPSE uses special material to suppress vibration and places two speaker units in an enclosure. Furthermore, the supporting section of the internal aluminum shaft uses a special material to cancel any vibration. This structure not only minimises unwanted vibration transmitted to the enclosure but also maintains the interior of the enclosure airtight.
High-output Digital Power Amplifier
ECLIPSE adopts an ICEpower-made high-output, digital power amplifier in order to extract all the potential out of the two small diameter speaker units which are designed to achieve a wide-range sound reproduction at high-response speed. The incorporation of the digital power amplifier enables the downsizing of the internal circuit and results in high-efficiency energy conversion thus solving various issues, including problems in the occupation of internal space and heat dissipation. The digital power amplifier has improved the ‘bulk ratio’ of the subwoofers while keeping high linearity at maximum output, thus achieving the reproduction of bass sounds with sufficient margins.
ICEpower ® is a registered trademark of Bang & Olufsen ICEpower a/s.
LPF Bypass Function to Send Signals Directly
A low-pass filter (LPF) for music signals is one of the causes in delaying music signals to subwoofers, and plays an important role working as a treble blocker while allowing bass sounds to pass through the LPF. Therefore, a slight delay in low-range signals will result. Furthermore, devices, such as AV amplifiers and subwoofers, use LPFs, and a delay in bass sounds will become significant when music signals pass through a number of LPFs. In order to solve this phenomenon, ECLIPSE’s subwoofers incorporate an LPF bypass function. In the case of reproducing subwoofer channel signals, including Blu-ray music signals, through the built-in LPF of an AV amplifier, a delay in bass sounds can be minimized letting the sounds bypass the LPF on the subwoofer side.
Dual Control Function Allowing Versatile System Set Up
ECLIPSE’s subwoofers incorporate versatile input and output terminals to support a variety of stereo and sound systems in combination. In addition to line (stereo) input and output terminals, speaker level input and output terminals are provided, thus connecting to 2.1- and 5.1-channel systems as well. Furthermore, the input and output terminals are divided into two blocks, each of which allows independent volume and LPF level adjustments. This dual control function with two control blocks makes it possible to construct versatile systems, including AV and stereo amplifiers, eliminating equipment limitations with dramatic operability improvements.
Specifications:
Bandwidth: | 25 to 150Hz (-10dB) |
Drivers: | 2x 20cm paper/kevlar |
Power: | 250w |
Inputs: | Line level x2, Speaker level x1 set |
Phase adjust: | 0/180deg (on sub or remote) |
Accessories: | Grill x2, Remote, Power cable, Felt feet |
Dimensions: | 420 x 459 x 444mm (HxWxD) |
Weight: | 37Kg |