Active Crossover ACN400 | Products

"Transfer function G=1"

The -6dB/Oct is in phase, but you want to split with a steeper filter. However, if you increase the value to -12dB/Oct or higher, the phase does not match. Even if you reverse the polarity of the speakers or take time alignment, the phase does not match. The newly developed "MK Filter" eliminates phase rotation even at -12dB/Oct, freeing you from the difficulty of adjusting a multi-amp system.

■Crossover frequencies that can be set

Low/Mid-low	63, 100, 200, 400, FLAT
Mid-low/Mid-high	400, 630, 1000, 2000
Mid-high/High	2000, 4000, 8000, FLAT

The slope of each filter is fixed at -12dB. It cannot be changed to other slopes.
Analog type, no time alignment function is provided.

2-way or 3-way	It can also be used by specifying FLAT.
3D System	3D output + 3-way setting with 3D selection button
Attenuator	Resistor-switchable, adjustable from +0 to -30dB
Memory of settings	Up to 3 memory writes and recalls are possible.

Resistance switching ladder attenuator

In a variable resistor that slides on a resistor, noise is generated by a point-contact diode, which can be a source of distortion. This unit is a crossbar twin structure. A gold and platinum contact relay switches the resistance and attenuates.

Power supply for each left and right

A switching power supply that does not generate flux leakage and a fast-response dropper power supply are used to construct a highly stable power supply.

Unique transformers

A unique transformer placed in the signal path cuts noise and allows only the audio signal to pass through without adding anything extra. Both inputs and outputs are equipped with one XLR and one RCA each, and the use of transformers ensures perfectly balanced inputs and outputs.

Specification

Model	ACN400
Type	CR type (MK filter) crossover network
Input/Output Terminal	Balanced, Unbalanced
Max. Input Voltage	3.0 V (Balanced, Unbalanced)
Max. Output Voltage	3.0 V (Balanced, Unbalanced)
Input Impedance (100 Hz-10k Hz)	3k Ω
Output Impedance (100 Hz-10k Hz)	300 Ω
THD (At 0.3 V output)	0.1 %/1k Hz or less
Frequency Response (4ch composite)	20 Hz-20 kHz +0 -2 dB
Gain	0 dB
Crossover Frequencies	Setting by pushbutton
	Low/Mid-low range	63, 100, 200, 400, FLAT
	Mid-low/Mid-high range	400, 630, 1000, 2000
	Mid-high/High range	2000, 4000, 8000, FLAT
Slope Characteristics	-12 dB/Oct fixed
Signal to Noise Ratio	80 dB (Output 1.0 V, IHF-A corrected)
Crosstalk	70 dB (Output 1.0 V, IHF-A corrected)
Level Adjustment	+0 dB～-8 dB	0.5 dB step
	-8 dB～-13 dB	1 dB step
	-13 dB～-16 dB	1.5 dB step
	-16 dB～-30 dB	2-6 dB step
3D Output	Possible (Lch-Low, Subwoofer + 3Way)
Phase Setting	Not possible
Memory Write/Recall	3 memories
Mute Function	Possible (Per channel and all channels)
Display Adjustment	5 levels including lights out
Power Supply	AC100/117/220/240 V, 50/60 Hz
Power Consumption	60 W
Dimensions	470W×90H×350D mm
Weight	16 kg
Finishing	Anodised aluminium
Accessories	AC cords
Warranty Period	5 years

The input impedance of this unit is 3k Ω. Please use a equipment with an output impedance of 1k Ω or less.
The slope of each filter is fixed at -12dB. It cannot be changed to other slopes.
Dimensions do not include legs, knobs, or terminals.
The descriptions are current as of March 31, 2023.
The appearance and specifications are subject to change without notice.
Actual colors may differ from those in the photographs due to photography, lighting, etc.