SPL Gemini 1720, Manual

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12
Control Elements
2 3
4 5
6 1
Filter &
Width
ELL
IPTIC FILTER
Solo
Balance
& Trim Active Solo
mastering
m/s
processor
Gemini
TRIM
STE
REO WIDTH
dB Hz dB
Insert Insert
120 V DC Audio Rail
MID M/S SIDE
Model 1720
-2.5
-2
.0
-1
.5
-1
.0
-0
.5
0 0.5
1
.0
1.5
2
.0
2
.5
3.5
3
.0
2
.4
1
.5
0
.7
0 0.7
1
.5
2.4
3
.0
3
.5
22
25
3
3
5
5
1
05
120 150
2
10
3
20
39
0
45
0
-5
.5
-5
.0
-3
.5
-2
.0
-
1.0
0 1.0
2
.0
3.6
5
.0
5
.5
dB
BALANCE
1 Active
2 Insert (MID)
3 Solo (MID)
4 Balance & Trim
5 Balance
6 Trim
1 Active
With this button, you activate the M/S Matrix of Gemini. If the button lights up, the M/S
Matrix is active. Before the insert Send in Gemini an M/S encoding takes place and after
the insert Return an M/S decoding. All further buttons and controls of Gemini are also
functioning. If the M/S Matrix is not activated with this button, an M/S encoding and M/S
decoding does not take place. Devices connected to the insert are fed with the regular
L/R stereo signal. All further buttons and controls of Gemini have no effect on the audio
signal in this case.
2 Insert (MID)
If the INSERT button in the MID section is activated, the device connected to the insert
MID is inserted into the signal path (Insert Send: MID Send, Insert Return: MID Return).
With this device, you can only process the mid part of the M/S signal. The mid signal (MID)
is the sum of the left and the right channel of the stereo signal (L+R), hence the “in-phase
part” of the stereo signal. The insert is located after the BALANCE control, though before
the TRIM control. Therefore, the mix balance can be corrected before the inserts and level
differences can be balanced after the inserts.