LR-660 Conference System

Built-in power supply, with an output power of 400W.
Main unit control up to 250pcs and power up to 64pcs microphones.
Equipped with an audio output interface.
Featuring a BAL interface for easy connection to various effects processors.
Built-in tone processing unit for adjusting bass and treble.
Independent volume control for the system.
Includes one AUX input with independent volume control.
Has a set of wired microphone input interfaces with independent volume adjustment.
Comes with a USB recording and playback module, enabling USB recording and playback functions.
Built-in 1W monitoring speaker with independent volume control.
High-fidelity sound quality and automatic feedback suppression function.
Optional automatic shutdown function for delegate units.
The panel has three function setting buttons: “MODE,” “SET,” “ENTER.”
Supports various conference modes such as free discussion, first in, first out, and restricted speaking.
Can provide power and data communication ports for a video central processor.
Can be placed flat on a tabletop or mounted in a 19-inch standard
rack cabinet.

Model	LR-660M (Main unit)	LR-660D/LR-660C (Microphone unit)	LR-670D/LR-670C (Microphone unit)
Audio Output	LINE OUT (unbalance), REC OUT (unbalance) BAL OUT	/	/
Audio Input	MIC IN (unbalance), AUX IN (unbalance)	/	/
Output Impedance	＜1KΩ	/	/
Effects Processor Interface	EFX IN/OUT (Connect the frequency shifter)	/	/
Voltage	AC220V	DC24V (Supply by 8PIN cable)	DC24V (Supply by 8PIN cable)
Power consumption	400W	2W	2W
T.H.D.	0.1%@1KHz	＜0.05%	＜0.05%
Product Dimension	480X330X90mm	205X117X55mm / MIC pipe 420mm	143X110X50mm / MIC pipe 240mm
SNR	＞96db	＞75db	＞75db
Control port	RJ45 interface	/	/
Sensitivity	-56dB	-44dB ±2dB	-44dB ±2dB
Frequency response	50Hz-16KHz	40Hz-16KHz	40Hz-16KHz
Color	Grey	Grey	Grey