Audio Database
CDM9NT
Commentary

A tall boy type speaker system which is the top model of the CDM NT series.

Two 16.5 cm cone type woofers are installed in the low range. The diaphragm of this unit uses paper Kevlar cone. The large diameter mushroom type dust cap is a feature. The voice coil bobbin directly supports the back side of the dust cap, enabling more dynamic low range playback.

The mid-range is equipped with a 16.5 cm cone type mid-range.
The diaphragm of this unit uses a Kevlar cone to reduce the standing wave generated in the cone. In addition, the center cap is equipped with a bullet-shaped fading plug to improve the diffusivity in the middle and high regions, making the connection between drive units smoother.

A 2.5 cm metal dome type tweeter is installed in the high range.
This unit is a tube-loading tweeter used in the Nautilus 800 series, which effectively absorbs unwanted sound radiation from behind the diaphragm, enabling higher-quality high-frequency playback.

In the network section, the filters for woofer and tweeter are separated into separate boards to eliminate mutual interference between each circuit.
Air-core choke coils and polypropylene film capacitors are used for the circuit elements.

The enclosure uses a bass reflex system.
The CDM NT series enhances the exposure of the tweeter by exposure of the tweeter, enhances the sound spread and the sense of freedom, and improves the total system performance by aligning the time with the woofer.
The bass reflex port has a number of small depressions in the opening that act like the surface of a golf ball and, in combination with hydrodynamically studied shapes, improve air turbulence in the port.

The exterior has a natural veneer finish and comes in three variations : black ash, red cherry and cherry.

Model Rating
Method 3-Way, 4-Speaker, Bass Reflex System, Tall Boy Type
Unit For low band : 16.5 cm cone x2
For Medium Range : 15.0 cm Cone Type
For high-pass : 2.5 cm dome type
Playback frequency band 30 Hz to 30 kHz -6dB
Playback frequency response 38 Hz to 20 kHz ± 3 dB
Nominal impedance 8 Ω (minimum 3.0 Ω)
Sensitivity 89dB/2.83V/m
Crossover frequency 350 Hz, 4 kHz
Power Handling (Compatible Amplifier Output) 50W ~ 200W (at 8 Ω)
External dimensions Width 220x Height 1,000x Depth 315 mm
Weight 26.5kg