Meyer Sound LD-2 - LD-2 Signal Flow Diagram

10
XLR
3
2
1
Input
10kΩ
RF & ESD
FILTER
Common mode:
425kHz low-pass
Normal mode:
142kHz low-pass
fc
DIFF
AMP
10Ω on
power supply board
80dB CMRR
Laser Trimmed
SIGNAL
& CLIP
DETECTOR
Master
Level
-12 to +6dB
MUTE SWITCHES
Master Mute
Switch
DIFFERENTIAL
DRIVER
PWR-ON
PWR-OFF
MUTE
RF
BLOCK
XLR
3
2
1
Mid-Hi
Output
High Current
Earth and Chassis GND
Earth and Chassis GND
Audio GND
160Hz
Q=0.8
-12dB/oct
Mid-Hi
Level
-12 to +6dB
Full range
Low-cut
Flat
ArrayEQ
–6dB at
220Hz;
0.6 octave
bandwidth
DIFFERENTIAL
DRIVER
PWR-ON
PWR-OFF
MUTE
RF
BLOCK
XLR
3
2
1
Mid-Bass
Output
Mid-Bass
or Aux
Mute Switch
High Current
80Hz
Elliptical
Mid-Bass
or Aux
Level
-12 to +6dB
Full range
Crossover
Earth and Chassis GND
DIFFERENTIAL
DRIVER
PWR-ON
PWR-OFF
MUTE
RF
BLOCK
XLR
3
2
1
Sub
Output
Sub Mute
Switch
High Current
Earth and Chassis GND
Sub
Level
-12 to +6dB
Full range
Crossover
Polarity
normal
Mid-Bass
or Aux & Sub
Crossover
65Hz
Q=0.9
-12dB/oct
GRN
RED
Mid-Hi Mute
Switch
Polarity
inverted
Polarity
normal
Polarity
inverted
LED
RED
Low-cut
LD-2 SIGNAL FLOW DIAGRAM
Both channels of the LD-2 are identical.