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Schematic Set For XR-20 and XR-24 Rack-Mount Mixers
XR-20 12 Mono Inputs · 4 Stereo Inputs XR-24 8 Mono Inputs · 8 Stereo Inputs

LINE INPUT
( MIC PAD )

LINE INPUT
( MIC PAD )

LINE INPUT
( MIC PAD )

LINE INPUT
( MIC PAD )

LINE INPUT
( MIC PAD )

LINE INPUT
( MIC PAD )

LINE INPUT
( MIC PAD )

LINE INPUT
( MIC PAD )

LINE INPUT
( MIC PAD )

STR LINE IN
( MIC PAD )

STR LINE IN
( MIC PAD )

STR LINE IN
( MIC PAD )

STR LINE IN P
( MIC PAD )

12V

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

20

30 GAIN 40 50

30 20

GAIN
40 50 20

30

GAIN
40 50 20

30

GAIN
40 50 20

30

GAIN
40 50

H O N E S
4 5 6 3 2 1 0 10 SOLO OFF FROM MONITOR TAPE IN
ADD MONO TO PHONES & ALT OUT

LAMP
7 8 9
9 6 3 0 3 6 9 12 15 18 21 24

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

10

70 LO CUT

15

60 SUM INPUTS

15

60 SUM INPUTS

15

60 SUM INPUTS

15

60 SUM INPUTS

­ 8

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K 8

­

0

+ HF 8 15 3K 5K 8K

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

15 2K 1K 600 400 ­ 8 15 0

L
SOLO

R
PWR

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8

+

HM
8 3 2 1

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

15 500

10 ­ AUX 4 5 6 TAPE 15 IN 0 OUT 7 + 5 20 8 9 40 0 10 · 10
TO A1- 2 TO L - R

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

1K

300

AFL 1- 2

1K 15

10 ­

100 ­ 8 15 ­ 8 15 0 0

2K +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

100

2K 0 +

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8 8

­

LM
8

20 40

AUX 10 ­ AUX 15 0 OUT 0 OUT + + 5 5 20 40

·

10 AFL A3

·

10 AFL A4

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15

15 ­ 8 15 0

15 + LF 8 15 15 20 40 10 ­

AUX 10 ­ AUX 15 0 OUT 0 OUT + + 5 5 20 40

·

10 AFL A5

·

10 AFL A6

EQ ON

1

EQ ON

2

EQ ON

3

EQ ON

4

EQ ON

5

EQ ON

6

EQ ON

7

EQ ON

8

EQ ON

9

EQ ON 10
AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

EQ ON 11
AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

EQ ON 12
AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

EQ ON S1
AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

EQ ON S2
AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

EQ ON S3
AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

EQ ON S4
AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

AUX SENDS
AUX 1- 2 PRE 10 ­ LEV 0 + 20 3 30 40 · 6

GROUP ASSIGN TO MAINS

M L
G1 G2 G3 G4

R

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

=

PAN

XR
10 5

20

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

1

2 AUX 3 - 4 PRE 10 ­

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

20 30 40 20 30 40

0 3 + 3

0
5

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­ 0 5 + 3

· 10

6 ­ 0 4 + 3 6 ­

10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

·
10

20 0 5 + 3 30

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

20 30 40 20 30 40

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

·

10

6 ­ 0 6 + 3 6

GROUP MASTERS
G1 G2 PK SIG G3 G4

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

·
=

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AUX 5 - 6 PRE

AFL

PAN

PAN

PAN

PAN

PAN

PAN

PAN

PAN

PAN

PAN

PAN

PAN

BAL

BAL

BAL

BAL

4 5 3 2 1

SOURCE IS 6 4 5 PRE 7 FADER 3

6 7 8 9

8 9

2 1

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

L ODD

R EVEN

0 10 MONITOR

0 10 ALT OUT (L-R)

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

SUM MONO SOLO OFF

10

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

MUTE
5

5
SOURCE SELECT
( ADD)

1

0

2

0

3

0

4

0

5

0

6

0

7

0

8

0

9

0

10

0

11

0

12

0

S1

0

S2

0

S3

0

S4

0
TAPE IN

0

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

BUS ASSIGN

5

A1- 2

5

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

MONO

10
L- R L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10
L- R

10

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G1- 2

15

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

G3 - 4

20

30
PK SIG PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

30
PK SIG

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

PFL

AFL

MONO

LEFT

RIGHT

Bal In @ +4dBu

Bus Inputs:

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

+48V On

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Bal Line In

XR L

20 L L R L R L R

Bus In

R

Mono

Mic In

Mic In

Mic In

Mic In

12
R

Mic In

11

Mic In

10

Mic In

9

Mic In

8

Mic In

7

Mic In

6

Mic In

5

Mic In

4

Mic In

3

Mic In

2

Mic In

1

Mic In

G3

G1

Bal Line In

Bal Line In

Bal Line In

Bal Line In

Chan Insert

Chan Insert

Chan Insert

Chan Insert

Chan Insert

Chan Insert

Chan Insert

Chan Insert

Chan Insert

Chan Insert

Chan Insert

Chan Insert

+4dBu

Bus In

L R

L R

L R

L R

G4

G2

S4

Line In

S3

Line In

S2

Line In

S1

Line In

12

Direct Out

11

Direct Out

10

Direct Out

9

Direct Out

8

Direct Out

7

Direct Out

6

Direct Out

5

Direct Out

4

Direct Out

3

Direct Out

2

Direct Out

1

Direct Out

2 3

1

1= GND 2= IN + 3= IN ­

Mic In @­40dBu Bus In @+4dBu

Main Out Mono

Main Insert

Monitor Out

A lt O ut

Tape (L i ne) In

Group Out

Group Insert

2

Aux Out -XLR

1

Aux Out -TRS

Aux Insert

XLR Female
1 3 2 1= GND 2= OUT + 3= OUT ­

2

1

2

1

Main Out @+4dBu Main Out @­25dBu Aux Out @+4dBu XLR Male All@ +4dBu

L R
Left

L R

L R

1
4 3

T= OUT + R= G COMP S= GND

Direct Out Aux Out Group Out Alt Out Monitor Out 1/4" TRS Output

2

4

3

4

3

T= IN + R= IN ­ S= GND

Line Input @+4dBu Bus In @+4dBu Tape In @+4dBu

L
Right

L

L

3
6 5

1/4" TRS Input
T= Send R= Return S= GND

6

5

6

5

Chan Insert @+4dBu Aux Insert @­2dBu Group Insert @­2dBu Main Inserts @­2dBu 1/4" TRS Insert Alt Out Monitor Out Tape In RCA Jack
DEFAULT CHANNEL SETTINGS:
Direct-Out (D - O) Is POST-FADER Aux Sends Are POST-FADER When "PRE" Button Is Pressed, Auxes Switch To PRE-FADER (POST-EQ)

R
Press For Mic Level

R

R

4

T= OUT S= GND T= IN S= GND

All@ ­10dBV

Main Outputs:
Bal Line @ +4dBu or Bal Mic @ ­ 25dBu

Main Inserts:
Tip = Send Ring = Return Sleeve = Ground

Outputs: RCA= Unbal @ ­ 10dBV
TRS= Ground Comp @ +4dBu Inputs: RCA= Unbal @ ­ 10dBV TRS= Bal @ +4dBu

Group Inserts @­ 2dBu:
Tip = Send Ring = Return Sleeve = Ground

Pin 2 = Driven Pin 3 = GC Sense Pin 1 = Ground

Aux Outputs @+ 4dBu:
Ground Comp

Tip = Driven Ring = GC Sense Sleeve = Ground

Aux Inserts @­ 2dBu:
Tip = Send Ring = Return Sleeve = Ground

Use 5-Pin DIN cable to interconnect two Consoles

OPTIONS FITTED ( $ ):
D - O Is PRE-FADER (POST-EQ) When "PRE" Button Is Pressed, Aux Sends Switch To: PRE- INSERT PRE- EQ

SOLO LINK IN OUT

XR-20

XR-24

X-RA CK
Professional Audio Products
Designed and Built in the USA

ON
P O W E R

RACK-MOUNT MIXER

Crest Audio Inc. Paramus, NJ 07652 USA www.crestaudio.com

02

CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN

ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE

AVIS : RISQUE DE CHOC ÉLECTRIQUE--NE PAS OUVRIR WARNING: TO REDUCE THE RISK OF FIRE OR

AC IN 100 - 240V 50 / 60 Hz 80W
N484

ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE
OU DE CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á L'HUMIDITÉ

MOUNT IN RACK ONLY INSTALLER SUR SUPPORT DE MONTAGE SEULEMENT NO USER SERVICABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL

C

UL
®

US

LISTED

COMMERCIAL AUDIO SYSTEM 25E9

X-RACK MONO INPUT MODULE
12 OR 8 MONO INPUTS AVAILABLE
+48V ON +48V TO PEAK CIRCUIT LEVEL FREQ LEVEL FREQ LEVEL LEVEL MUTE MONO L-R G1-2 G3-4 PFL SOLO LEFT SOLO RIGHT

MAIN RIBBON CABLE 34 WAY
MONO LEFT

GROUP MIX AMP

X-RACK GROUPS (1 OF 4 SHOWN)
PRE FADER

INSERT SEND / RTN

RIGHT POST FADER GROUP LED PEAK R (AFL)
AFL

BAL MIC IN LINE

GAIN 12 - 70 dB

HPF 70Hz -18dB/Oct

SOLO DC

GROUP FADER

TO GROUP MIX-AMP

GROUP BUS IN

PAN EQ ON HPF BAL LINE IN INPUT PREAMP 100MM SOLO TRIGGER YES PRE SOURCE MUTE ? NO PRE FADER PRE-SOURCE BUFFER A3-4 PRE A1-2 PRE
LF 80 HZ LOW MID 80 - 2 KHZ HI MID 400 - 8 KHZ HF 12 KHZ

GROUP-TO-MAIN ASSIGN SWITCHES
ODD GROUPS FEED LEFT SOLO, EVENS FEED RIGHT SOLO SOLO LEFT

+10 GROUP OUT

CHAN FADER

FADER AMP

60MM

FOUR BAND EQ

27dB PAD

+10

BUS ASSIGN SWITCHES

GC

SIG SOLO RIGHT G

INSERT SEND / RTN

INPUT SIGNAL LED PEAK R (PFL) DIRECT OUT SOURCE

SOLO DC PAN 1-2 LEVEL 1-2 A1 A2

X-RACK AUX BUSES 1-2 (STEREO PAIR)
AUX MIX AMPS AUX 1 INSERT SEND / RTN AUX 2 AUX 1-2 MASTER

POST FADER DIRECT OUT

SIG

G POST FADER

PRE EQ

LEV 3

A3
AFL

GC
PRE FADER REAR PANEL

PRE FADER PRE INSERT

LEV 4

A4

SOLO LEFT +10 AUX 1 OUT

PRE-SOURCE SELECT

A5-6 PRE

LEV 5

A5 SOLO RIGHT

GC GC
+10

AUX 2 OUT

LEV 6

A6 SOLO DC

AUX SENDS 1 THRU 6

X-RACK STEREO INPUT MODULE
4 OR 8 STEREO INPUTS AVAILABLE
+48V ON +48V PRE FADER BAL MIC IN GAIN 15 - 65 dB LEVEL FREQ LEVEL FREQ LEVEL LEVEL TO PEAK CIRCUIT PFL SOLO LEFT SOLO RIGHT SOLO LEFT

AUX MIX AMP

X-RACK AUX BUSES 3 THRU 6 (1 OF 4 SHOWN)

INSERT SEND / RTN

AFL

AUX MASTER +10

LINE

MONO

BAL

MUTE

SOLO RIGHT SOLO DC SOLO DC

AUX OUT

EQ ON

GC
MONO CHAN FADER FADER AMPS LEFT +10 POST FADER +10 L-R G1-2 G3-4

LEFT
BAL LINE IN

LF 80 HZ

LOW MID 80 - 2 KHZ

HI MID 400 - 8 KHZ

HF 12 KHZ

FOUR BAND EQ - LEFT

27dB PAD

PRE EQ
LF 80 HZ LOW MID 80 - 2 KHZ HI MID 400 - 8 KHZ HF 12 KHZ

BUS ASSIGN SWITCHES

LEFT MIX AMP

X-RACK MAIN OUT LEFT-RIGHT
L-PRE FADER

L-INSERT SEND / RTN

100MM

RIGHT A1-2 PRE LEFT RIGHT PAN 1-2 LEVEL 1-2 L/R SIGNAL LED PEAK A3-4 PRE L&R MIXED LEFT LEV 3 A3 SIG LEV 4 A4 RIGHT MIX AMP G R LEFT FADER L-POST FADER +10 MIC LEVEL LEFT BAL OUT

BAL MIC IN

FOUR BAND EQ - RIGHT

A1 A2

RIGHT
BAL LINE IN

YES INPUT SIGNAL LED SOLO TRIGGER PRE-AMP OUT L&R LEFT SIG PRE SOURCE MUTE ? PRE FADER PRE EQ POST FADER L&R PRE FADER L&R PRE FADER RIGHT PRE EQ PRE-SOURCE SELECT

30dB PAD

27dB PAD

INPUT PREAMP

100MM R-INSERT SEND / RTN

PEAK R (PFL)

NO A5-6 PRE

REAR PANEL

G

LEV 5 L&R MIXED

A5

PRE-SOURCE BUFFERS

RIGHT BUS IN LEFT BUS IN

R-PRE FADER

RIGHT FADER R-POST FADER +10

MIC LEVEL RIGHT BAL OUT

LEV 6

A6

RIGHT

30dB PAD

AUX SENDS 1 THRU 6

100MM

MONO MIX AMP

X-RACK MAIN OUT MONO
M-PRE FADER

M-INSERT SEND / RTN

P ROTARY POT FOR MODELS: XR-20 : 12 MONO / 4 STEREO XR-24: 8 MONO / 8 STEREO

GC

GAIN

FADER

PAD

BICOLOR GROUND COMP BALANCED DRIVER DRIVER LED LED

AMP

PANEL SWITCH

FITTED SOLDER LINK BLOB USER OPTIONS

MONO SIGNAL LED

MONO FADER M-POST FADER +10

MIC LEVEL MONO BAL OUT

FET SWITCH

ELECT SWITCH

1/4" TRS JACK

RCA JACK

XLR JACK

OBE FRANK
AFL

MONO BUS IN

PEAK R (AFL)

30dB PAD

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

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

SIG SOLO LEFT

G

100MM

LEGENDS

SOLO RIGHT SOLO DC

SOLO-LINK CONNECTORS. USE 5-PIN DIN CABLE FROM SLAVE CONSOLE OUT TO MASTER CONSOLE IN

Use 5-Pin DIN cable to interconnect two Consoles

SOLO-LINK:
TIES SOLO AUDIO AND CONTROL BETWEEN CONSOLES. SLAVE SOLOS SHOW UP ON MASTER CONSOLE. -10dBV TAPE-IN L TAPE IN LEFT BNC CONNECTOR FOR 12VOLT LAMP ( ON FRONT PANEL ) +4dBu

TAPE-IN LEVEL

TAPE TO AUX 1-2
AUX-1 BUS LEFT BUS AUX-2 BUS RIGHT BUS

SOLO LEFT SOLO RIGHT

SOLO MIX AMPS SOLO FEED L-R TO: PHONES, MONITOR & METERS

LED METERS
LEFT OUT RIGHT OUT
FOLLOW SOLO, NORMALLY SHOW L / R OUT

SOLO LINK IN OUT

TAPE TO L/R TO: PHONES & MONITOR ADD MONO (RECESSED) LEFT OUT TAPE-IN L RIGHT OUT TAPE-IN R MONO OUT MONO PRE
TO ALT-OUT

SOLO DC

SOLO CONTROL LOGIC

SOLO CTRL

+9 6 3 0 -3 6 9 12 15 18 21 24

LEFT PRE-FADER ADD MONO RIGHT PRE-FADER

ALT LEVEL L R

GC
ALT OUT

POLY FUSES

SOLO FEED L-R SOLO CTRL SOLO ON TAPE IN FROM MONITOR SOLO OFF HEADPHONE LEVEL PWR ON

X-RACK REAR PANEL: AC INLET & SWITCH

SHORT-CIRCUIT PROTECTION

-10dBV TAPE IN RIGHT +4dBu DC OUTPUT TO POWER DISTRIBUTION RIBBONS

TAPE-IN R

GC

ON +17V

UNIVERSAL INPUT-VOLTAGE SWITCHING POWER SUPPLY
POWER INTERNALLY FUSED AND SHORT-CIRCUIT PROTECTED AC IN 100-240V 50 / 60 Hz 80W

-17V +48V
ANALOG GROUND

AUDIO SOURCES FOR MONITOR - ALL PRE-FADER
GRP3-4 GRP1-2 MON-L MON-R L R MONITOR SOURCE SELECT ( SELECTED SOURCES ADD TOGETHER ) L R SOLO FEED L-R SOLO FEED L-R SOLO CTRL L-R MONO AUX1-2 TAPE IN SOLO OFF

MONITOR LEVEL

SUM MONO

TO PHONES MON-L MON-R

GC
MONITOR OUT

+12V
AUX DC GROUND

HEADPHONE AMPS

GC

SAFETY GROUND TO CHASSIS

CHASSIS GROUND

SOLO CTRL

X-RACK BLK DIA-REV1.1 - 5/08/01

47Uf50V Elect