Speck Electronics LiLo - Manual (Page 7)

Chapter 1 Introduction Section 3
The LiLo is a modular mixer design with 16 or 24 input channels and a master
module fit into a solid frame.
Each input module is designed with plug-in preamp PC boards for Line-A,
Line-B, and direct out. The master module is also designed with plug-in
preamp PC
This type of design will facilitate
rd future circuit upgrades from Speck Electronics and/or 3 party manufacturers.
All inputs, outputs, and bussing are fully
balanced with transformers on the mix and group outputs. All input channels
have secondary configuration switches as well as configuration jumpers on
the circuit board.
summing amps, and output line amps.
The locations and types of the plug-in preamp cards are shown in Figures 1a,
1b, and 1c below.
boards for most of the critical circuit stages including the mix and
group
LiLo Features
P/N LPCPRE2
Output Amp
(Direct Out)
P/N LPCPRE1
Line Amp
(Line-A)
P/N LPCPRE1
Line Amp
(Line-B)
P
/N
L
P
C
P
R
E
2
O
u
tp
u
t A
m
p
(A
u
x
1
)
P
/N
L
P
C
P
R
E
2
O
u
tp
u
t A
m
p
(A
u
x
4
)
P
/N
L
P
C
P
R
E
2
O
u
tp
u
t A
m
p
(A
u
x
2
)
P
/N
L
P
C
P
R
E
2
O
u
tp
u
t A
m
p
(A
u
x
3
)
P/N LPCPRE2
Output Amp
(Mix Left)
P/N LPCACN
Summing Amp
(Mix Right)
Figure 1a. Input channel PCA
Figure 1b. Master 1 PCA
Figure 1c. Master 2 PCA
P/N LPCPRE2
Output Amp
(Mix Right)
P/N LPCACN
Summing Amp
(Mix Left)
P/N LPCPRE2
Output Amp
(Mon. Right)
P
/N
L
P
C
P
R
E
2
O
u
tp
u
t A
m
p
(M
o
n
. L
e
ft
)
P/N LPCACN
Summing Amp
(Group 1)
P/N LPCACN
Summing Amp
(Group 2)
P/N LPCPRE2
Output Amp
(Group 2)
P/N LPCPRE2
Output Amp
(Group 1)