LM-4D AES3 Digital Audio Level Matching System

LM-4D Front View


The LM-4D provides four channels of active signal level conversion between the AES3 and AES3-ID digital audio formats.

Two channels provides conversion from AES3 (XLR) to AES3-ID(BNC) signal levels, and two separate channels convert from AES3-ID to AES3.

The specially designed driver circuitary ensures AES/EBU compliance with respect to the relative signal amplitudes in each format.


LM-4D Specifications

Power Requirements115 VAC, 60 Hz or 230 VAC, 50 Hz; 5 W

Digital Audio Inputs

Number of Inputs4
Input ConnectorsXLR-3F x 2 (AES3), BNC x 2 (AES3-ID)
Input Impedance110 Ohms, XFR coupled (AES3); 75 Ohms (AES3-ID)
Input Signal Level0 to 5 V differential (AES3); 1 Vp-p (AES3-ID)
Input Cable Length300 meters typical

Digital Audio Outputs

Number of Outputs4
Output ConnectorsXLR-3M x 2(AES3), BNC x 2 (AES3-ID)
Output Impedance110 Ohms, XFR coupled (AES3);75 Ohms (AES3-ID)
Output Signal Level0 to 5 V differential (AES3); 1 Vp-p (AES3-ID)
Output Cable Length200 meters typical

Physical Dimensions (Inches)

LM-4D8.1 W x 1.9 H x 5.1 D

Ordering Information
LM-4DStand alone Table Top Version
LM-4D/R11 Unit Rack Mounted in 1 RU Frame. Unit takes 1/2 of the rack frame
LM-4D/R22 Units Rack Mounted in 1 RU Frame
LM-4D/AAssembly unit only. Ordered for existing Frames
LM-4D/MManual
PH-3/FRPhase 3 Rack Frame with no Products Installed
PH-3/BFPhase 3 Blank Front Panel plate
PH-3/BRPhase 3 Blank Rear Panel Plate
PH-3/DBPhase 3 Under the Desk Mounting Bracket
Please note that the Phase 3 products may be order in combination with other units. Example A2D-1/D2A-1 is a Rack Frame with one A2D-1 and one D2A-1 together on the same frame.
LM-4D Rear View

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