D&b audiotechnik M2 Spécifications télécharger pdf (Page 5)

M2 Manual (5.0E) Page 5 of 8

Operation with D12

INPUT A

OUT A

2-Way

SenseDrive

OUT B

2-Way

AMP B

AMP A

D12 Input/Output routing

2-Way Active mode

Selecting "2-Way Active" and M2 mode enables up to two M2

cabinets to be driven actively by the D12 amplifier.

The input signal is fed to INPUT A, while the input signal is routed

(linked) to INPUT B internally.

IMPORTANT!

To apply SenseDrive for the LF driver of both cabinets they should

be linked together locally and connected to the output A connector

of the D12 amplifier.

Controller settings

For acoustic adjustment the settings CUT and CPL can be selected.

CUT

Set to CUT, a high pass filter with a 110 Hz cut off frequency is

inserted in the controller signal path. The M2 is now configured for

use with d&b active subwoofers.

CPL circuit

Frequency response of CPL circuit

The CPL (Coupling) circuit compensates for coupling effects

between the cabinets when building closely coupled arrays. CPL

begins gradually at 1 kHz, with maximum attenuation below

400 Hz, providing a balanced frequency response when the M2

cabinet is used in arrays of two or more. The function of the CPL

circuit in the D12 amplifier is shown in the diagram opposite and

can be set in dB attenuation values between –9 and 0, or a positive

CPL value which creates an adjustable low frequency boost around

65 Hz (0 to +5 dB).

The following CPL settings correspond to the M2 controller settings

of the A1 and are described in the following section "Operation

with A1 - LFC level control":

0 dB = Floor, +3 dB = Free, –3 dB = Pair

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D&b audiotechnik M2 Spécifications Page 5