Rupert Neve 551 - 500 Series Inductor EQ - Manual (Page 3)

551: Front Panel
0
-15 +15
0
-15 +15
0
-15 +15
LF
PEAK
8K
16K
EQ IN
POWER
220
100
60
35
MID FREQ
MF
HI Q
LOW FREQ
3K
1.5K
700
350
200
6K
HF
MID
LF
HF
PEAK
HPF
80Hz
Rupert Neve
Designs
551
INDUCTOR
EQ
HPF
Engages 80Hz HPF. Illuminates
green when active
Mid Parametric
Low Frequency EQ
High Frequency Shelf / Peak
Selectable at 35, 60, 100, and
220 Hz. Continuous gain from -15 to
+15dB. Selectable peak or shelf curves
Selectable at 200, 350, 700,
1.5 K, 3 K, and 6 KHz. With
continuous gain from -15 to
+15dB. Selectable Hi Q
Selectable at 8 and 16 Khz. With
continuous gain from -15 to +15dB.
Selectable peak or shelf curves
EQ IN
Engages EQ. Illuminates
green when active
551: Block Diagram
OUTPUT TRANSFORMER HPF ENGAGE IN PUT TRANSFORMER EQ ENGAGE
-
INP UT STAGE
+
OUTP UT STAGE
+
HPF (80Hz)
IN PUT OUTPUT
HF L F MID
-
MID EQ
-
HI & LO SHELVES
8K /16K
HF PEAK L F PEAK
MF HI Q
L OW FREQ
MID FREQ
SHEL F SHEL F
8K
16K
PEAK PEAK
220Hz
100Hz
60Hz
35Hz
L O Q
HI Q
6kHz
3kHz
1.5kHz
700Hz
350Hz
200Hz