Crest Audio X-RACK XRM - XRM Block Diagram

XRM owner’s manual
p.4
XRM block diagram
BAL XLR
IN
BAL LINE IN
INPUT
PREAMP
GAIN
10 - 70 dB
FOUR BAND EQ
LEVEL
LF LOW MID HI MID HF
HPF
LINE
(MIC PAD)
26dB
PA D
PRE-SOURCE
SELECT
PRE
SOURCE
MUTE ?
SOLO DC
+10
MUTE
INSERT
SEND / RTN
+48V ON
EQ ON
FADER AMP
PRE-SOURCE
BUFFER
NO
YES
SOLO LEFT
MAIN
RIBBON
CABLE
-
40 WAY
XRM MONO INPUT MODULE
12 MONO INPUTS AVAILABLE
HPF
70Hz
-18dB/Oct
FREQ
INPUT
SIGNAL
LED
PRE
FADER
POST
FADER
LEVEL LEVELFREQ LEVEL
SOLO RIGHT
12 KHZ400 - 8 KHZ80 - 2 KHZ80 HZ
XRM BLK DIA-REV1.0 - 5/20/02
PFL
SOLO
TRIGGER
CHAN
FADER
MIX 1-4
PRE
PRE
FADER
PRE
EQ
PRE
INSERT
REAR PANEL
GAIN
15 - 60 dB
FOUR BAND EQ - LEFT
LEVEL
LF LOW MID HI MID HF
LINE
(MIC PAD)
PRE
SOURCE
MUTE ?
+10
MUTE
+48V ON
EQ ON
FADER
AMPS
PRE-SOURCE
BUFFERS
NO
YES
SOLO LEFT
XRM STEREO INPUT MODULE
4 STEREO INPUTS AVAILABLE
SUM
MONO
FREQ
POST
FADER
L & R
LEVEL LEVELFREQ LEVEL
SOLO RIGHT
12 KHZ400 - 8 KHZ80 - 2 KHZ80 HZ
PFL
SOLO
TRIGGER
CHAN
LEVEL
PRE
FADER
PRE
EQ
REAR PANEL
BAL LINE IN
INPUT
PREAMP
26dB
PA D
LF LOW MID HI MID HF
12 KHZ400 - 8 KHZ80 - 2 KHZ80 HZ
FOUR BAND EQ - RIGHT
+10
PRE-SOURCE
SELECT
PRE
FADER
PRE
EQ
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
PRE
FADER
L & R
PRE-AMP
OUT
L & R
PRE
FADER
POST
FADER
PRE
EQ
ODD MIX
BAL OUT
MIX INSERT
SEND / RTN
XRM MIX PAIR
1 OF 6 PAIRS SHOWN
ODD
MIX AMP
+10
PEAK
(AFL)
SIG
SIG/PK
LED
POST
FADER
ODD
FADER
60MM
PRE
FADER
ODD MIX
BUS IN
SOLO DC
SOLO LEFT
SOLO RIGHT
AFL-ODD
PEAK
(PFL)
SIG
TO
PEAK
CIRCUIT
R
G
INPUT
SIGNAL
LED
PEAK
(PFL)
SIG
R
G
SOLO DC
TO
PEAK CIRCUIT
G
R
M1 M2
MONITOR
OUT - L
MONITOR / HP
LEVEL
L
R
HEADPHONE
AMP
SOLO LEFT
SOLO
MIX AMPS
SOLO DC
SOLO
FEED
L - R
SOLO CONTROL LOGIC
+9
6 3 0
-3
6 9
12 15 18 21 24
SOLO
ON
PWR
ON
LED
METERS
FOLLOW SOLO
ON
POWER
AC IN
100
-
240V
50 / 60 Hz
80W
X-RACK REAR PANEL:
AC INLET & SWITCH
UNIVERSAL INPUT-VOLTAGE
SWITCHING POWER SUPPLY
+17V
-17V
+12V
+48V
INTERNALLY FUSED AND
SHORT-CIRCUIT PROTECTED
TO POWER
DISTRIBUTION
RIBBONS
ANALOG
GROUND
AUX DC
GROUND
SAFETY
GROUND
TO CHASSIS
CHASSIS
GROUND
BNC CONNECTOR
FOR 12VOLT LAMP
( ON FRONT PANEL )
SHORT-CIRCUIT
PROTECTION
POLY
FUSES
XRM BLOCK DIAGRAM
GC
P
GAIN
ROTARY
POT PAD LED
AMP
PANEL
SWITCH
FADER
FET
SWITCH
BALANCED
DRIVER
ALL SWITCHES SHOWN IN THE UP (DESELECTED) POSITION AMP(LIFIER) GAIN SHOWN IN DB WHEN NEEDED WHEN SHOWN: 1/4” TRS SWITCHING JACKS HAVE NORMALLY CLOSED CONTACTS USER OPTIONS IMPLEMENTED WITH REMOVABLE LINKS AND SOLDER BLOBS DEFAULT OPTION POSITION SHOWN UNDERLINED
GROUND COMP
DRIVER
BICOLOR
LED
1/4” TRS
JACK
XLR
JACK
OBE
FRANK
ELECT
SWITCH
STANDARD OUTPUT LEVEL IS +4 dBu AT 0 VU PIN 2 HOT ON ALL BALANCED INPUTS AND OUTPUTS (XLR JACKS) FOR UNBALANCED OPERATION: TIE PIN 3 TO PIN 1, USE PIN 2 FOR OUTPUT, PIN 1 FOR GND “Ø” SYMBOL INDICATES POLARITY REVERSE
LEGENDS
USER OPTIONS
SOLDER
BLOB
FITTED
LINK
RCA
JACK
SOLO
LINK
IN OUT
Use 5-Pin DIN cable to
interconnect two Consoles
SOLO-LINK CONNECTORS.
USE 5-PIN DIN CABLE FROM
SLAVE CONSOLE OUT
TO MASTER CONSOLE IN
SOLO-LINK:
TIES SOLO AUDIO AND
CONTROL BETWEEN
CONSOLES. SLAVE SOLOS
SHOW UP ON MASTER
CONSOLE.
DC OUTPUT
PIN 1 LIFT
MIX SENDS 1 & 2
LEV / LEV
__
LEV / PAN
SWITCHING
M3 M4
MIX SENDS 3 & 4
LEV / LEV
__
LEV / PAN
SWITCHING
M5 M6
MIX SENDS 5 & 6
LEV / LEV
__
LEV / PAN
SWITCHING
M7 M8
MIX SENDS 7 & 8
LEV / LEV
__
LEV / PAN
SWITCHING
M9
M10
MIX SENDS 9 & 10
LEV / LEV
__
LEV / PAN
SWITCHING
M11 M12
MIX SENDS 11 & 12
LEV / LEV
__
LEV / PAN
SWITCHING
26dB
PA D
PIN 1 LIFT
SPLIT
OUT
BAL XLR
IN
SPLIT
OUT
BAL XLR
IN
SPLIT
OUT
MIX 1-4
PRE
M1 M2
MIX SENDS 1 & 2
LEV / LEV
__
LEV / PAN
SWITCHING
PRE
FADER
M3
M4
MIX SENDS 3 & 4
LEV / LEV
__
LEV / PAN
SWITCHING
M5 M6
MIX SENDS 5 & 6
LEV / LEV
__
LEV / PAN
SWITCHING
M7
M8
MIX SENDS 7 & 8
LEV / LEV
__
LEV / PAN
SWITCHING
M9
M10
MIX SENDS 9 & 10
LEV / LEV
__
LEV / PAN
SWITCHING
M11
M12
MIX SENDS 11 & 12
LEV / LEV
__
LEV / PAN
SWITCHING
SUM
HPF
HPF
40Hz
-18dB/Oct
EVEN MIX
BAL OUT
MIX INSERT
SEND / RTN
EVEN
MIX AMP
+10
PEAK
(AFL)
SIG
SIG/PK
LED
POST
FADER
EVEN
FADER
60MM
PRE
FADER
EVEN MIX
BUS IN
G
R
HPF
HPF
40Hz
-18dB/Oct
STEREO PAIR
STEREO
PA IR
LO-CUT
ON
AFL-EVEN
CTRL TO
INPUT SENDS
SOLO
LOGIC
&
SWITCH
AFFECTS BOTH
ODD & EVEN
SOLO RIGHT
SPEAKER
ON
MONITOR
OUT - R
COMMON
INPUT - L
COMMON
INPUT
LEVEL
ODD
MIX BUSES
1 3 5 7 9
11
2 4 6 8
10
12
EVEN
MIX BUSES
L
R
SOLO AND MONITOR CIRCUITS
HEADPHONE
JACK
COMMON
INPUT - R
COMMON INPUT CIRCUITRY