DENON S-170mkII

Commentary

A 2-way speaker system that pursues realistic music playback without breaking the harmony of music.

25RW15 which is a 25 cm cone type woofer is mounted in the low range.
The diaphragm of this unit is made of collagen cone. Collagen fiber is extracted from animal skin by a special chemical treatment and fused with the material of corn paper. While maintaining rigidity, only internal loss is controlled to an appropriate value, thereby suppressing split resonance region and high frequency resonance.
In addition, by using collagen fibers for the edge, the disturbance of characteristics due to the inverse vibration between the cone paper and the edge is minimized. In addition, the flexibility of collagen fibers allows the lowest resonance frequency to be lowered.

40 dt 01, which is a 4 cm dome type tweeter, is installed in the high range.
In this unit, a flexible natural fiber material is used for the diaphragm, a special coating material is applied by hand several times to the dome part, and a special glass fiber is used for sound absorption processing inside the dome, giving excellent directional characteristics and flat characteristics without significant peaks or dips.
In addition, a stable free edge type supporting the diaphragm for large amplitude is used for the edge part.
A 120 φ x60 φ x17 barium ferrite magnet is used for the magnetic circuit, and a steel-clad aluminum wire is used for the voice coil to extend the allowable input resistance and high-frequency characteristics.

The network uses a 6dB/oct. configuration with excellent phase characteristics.
An air-core coil with low DC resistance is used for the network element in consideration of distortion at large input, etc., and an MF type capacitor is used in parallel in order to reduce sound quality and capacity error.

Equipped with continuously variable level control for high frequency band.

The enclosure has a symmetrical design, 20 mm hard particle board material, and a full-surface real wood finish.
In addition, three types of sound absorbing materials with different densities are used inside the enclosure to eliminate standing waves, while acoustic braking is applied to the woofer to control the low frequency range.

Model Rating

Method	2-Way, 2-Speaker, Airtight Type, Bookshelf Type
Units Used	For Low Band : 25 cm Cone Type (25RW15) For High Range : 4 cm Dome Type (40DT-01)
Frequency characteristic	40 Hz to 20 kHz ± 5 dB
Directional frequency characteristic	45 Hz ~ 13 kHz ± 4 dB (at 30 degrees)
Maximum allowable input	60W (program source)
Impedance	8 Ω
Average output sound pressure level	89dB/W/m
Crossover frequency	1.5kHz
Total harmonic distortion factor	1.5% or Less (5W, 70 hz or More)
Level control	Continuously variable type
External dimensions	Width 320x Height 597x Depth 291 mm
Weight	16.5kg