7
Block diagram (Stereo models: 408S, 808S)
63
125
250
500
1K
2K
4K
8K
16K
D
AMPING/DEPTH
TIME/RA
TE
EFX WIDE
10
5
0
-5
-10
-15
-30
-40
-20dB
L
R
MID
HI
80
2K5
12K
LO
75Hz
HPF
75Hz
HPF
63
125
250
500
1K
2K
4K
8K
16K
10
5
0
-5
-10
-15
-30
-40
10
5
0
-5
-10
-15
-30
-40
75Hz
HPF
63
125
250
500
1K
2K
4K
8K
16K
PHANT
OM
+15V DC
MID
HI
80
2K5
12K
LO
MID
HI
80
2K5
12K
LO
COMPRESSOR
COMPRESSOR
PHANT
OM
TRIM
(INPUT LEVEL SET)
0 to 40dB
G
L
O
B
A
L
P
H
A
N
T
O
M
P
O
W
PWR AMP
GR
OUND
CHASSIS
GR
OUND
PWR AMP
GR
OUND
CHASSIS
GR
OUND
RIGHT PO
WER
AMP IN
MIC/LINE
CH 1-6
3-BAND EQ
+/- 15dB
+/- 15dB
+/- 15dB
+VDC
+VDC
BREAK
(MUTES CH 1-6, EFX,
AND MONIT
OR)
PHANT
OM
L'
R'
EFX
MON
L
R
EFX
EFX T
O
MONIT
OR
EFX
T
O
MAIN
EFX BYP
ASS
EFX CLIP
EFX RETURN L
EFX SEND
LEFT PO
WER
AMP IN
LEFT MIXER
OUT
AMP R
OUTING
T
APE IN
T
APE OUT L
STEREO MAINS
MAIN/MONIT
OR
MONIT
OR
EFX
PA
N
V
OLUME
MONIT
OR
EFX
PA
N
TRIM
(INPUT LEVEL SET)
T
APE OUT R
MAIN MASTER
LEVEL
MONIT
OR LEVEL
STEREO
CH 7-8
INSER
T
0 to 40dB
Off to +20dB
Off to +20dB
Off to +10dB
+/- 15dB
Off to +12dB
Off to +20dB
Off to +10dB
Off to +12dB
Off to +10dB
Off to +10dB
Off to +12dB
Off to +10dB
EFX RETURN R
RIGHT MIXER
OUT
MONIT
OR
LINE OUT
+/- 15db
+/- 15db
3-BAND EQ
9-BAND EQ
9-BAND EQ
9-BAND EQ
3-BAND EQ
EFX
FOO
T
SWITCH
LEVEL
MA
CKIE DESIGNS
PPM STEREO
BLOCK DIA
GRAM
(#12099CJM/DF)
LEFT AMP
LEFT SPEAKER
OUT
RIGHT AMP
RIGHT SPEAKER
OUT
R
UMBLE FIL
TER
R
UMBLE FIL
TER
R
UMBLE FIL
TER
T
APE IN
LEVEL
V
OLUME
Off to +20dB
LEFT/
MONO
RIGHT
EMA
C
DSP
