DENON SC-A555SA

Commentary

This is a bookshelf type speaker system that uses the P. P. D. D. method and the Super Tweeter that realizes 120 khz.

Two 14.5 cm cone type woofers are mounted in the low range and driven by the P. P. D. D method.
In the P. P.D. D. method, one edge of the woofer set at the front and rear of the enclosure is attached in the opposite direction to cancel the harmonic distortion and eliminate it. This realizes low-frequency reproduction with less distortion and a sense of volume.
The woofer diaphragm is made of lightweight and highly elastic glass fiber.

A 2.5 cm soft dome type tweeter is installed in the high range.
Neodymium magnet is used for the magnetic circuit of this unit.

A 2 cm dome type Super Tweeter is installed in the super high range.
A lightweight, highly elastic Nastron diaphragm is used for the diaphragm, enabling playback up to the ultra-high frequency range of 120 kHz.
This unit also uses a neodymium magnet for its magnetic circuit.

Each unit uses a non-magnetic frame, which does not affect the magnetic circuit and reduces sound turbidity.

A newly designed crossover network focusing on directivity is adopted in the network section.
This circuit is designed to achieve uniform directional characteristics over a wide area in order to increase the sweet spot in multi-channel playback. This makes it easy to set up multi-channel speakers and allows each person to enjoy multi-channel audio even when watching with many people.

The front baffle is 3-D machined to minimize the mounting surface of the unit to eliminate diffraction effects at the end face of the baffle. The baffle is made of 30 mm thick MDF material to reduce vibration of the woofer.
The enclosure uses a bass reflex system.

The input terminal uses a brass machined gold plated terminal that supports banana plugs.
Bi-wiring is also supported.

It comes with cork slip stopper.

There were speaker stand and wall mount / ceiling bracket sold separately.

Model Rating

Method	3-way, 4-speaker, bass reflex system, bookshelf type, magnetic resistance design (EIAJ)
Units Used	For low band : 14.5 cm cone x2 For high-pass : 2.5 cm dome type For Super High Range : 2 cm Dome Type
Frequency characteristic	33 Hz to 120 kHz
Average output sound pressure level	89dB/W/m
Input impedance	6 Ω
Maximum allowable input	200W(Peak) 100W(EIAJ)
External dimensions	Width 190x Height 332x Depth 293 mm
Weight	7.2kg
Attachment	Cork Slip Stopper x4 One speaker cord (approx. 3m)
Sold separately : Speaker Stand ASS 555 (1 unit, ¥ 15,000)
External dimensions	Width 300x Height 500x Depth 320 mm Top Plate Plane Dimension : Width 190x Depth 245 mm
Weight	5.8kg
Speaker Bracket ASASG - 555 (1 unit, ¥ 10,000)
External dimensions	Width 140x Height 279x Depth 120 mm
Weight	1.4kg