Rolls RA53 User Manual
DESCRIPTION
FRONT PANEL
0 10
0 10
0 10
0 10
0 10
POWER
RA53
OUT
CHANNEL ONE
LEVEL
OUT
CHANNEL TWO
LEVEL
OUT
CHANNEL THREE
LEVEL
OUT
CHANNEL FOUR
LEVEL
OUT
CHANNEL FIVE
LEVEL
Note: Descriptions for Channel One through Channel Five are identical.
OUT: 1/4” Tip-Ring-Sleeve jack for connection to a standard pair of headphones.
LEVEL: Controls the amount of output signal from the indicated channel.
OUT: 1/4” Tip-Ring-Sleeve jack for connection to a standard pair of headphones.
LEVEL: Controls the amount of output signal from the indicated channel.
POWER LED: Indicates that the RA53 is connected to the power supply and is
on.
on.
REAR PANEL
LEFT/
MONO
INPUT
INPUT
RIGHT/
STEREO
INPUT
LINK
AUX
INPUTS
INPUTS
RIGHT
LEFT
CHANNEL 2
INSERT
CHANNEL 1
INSERT
POWER
12VAC
MODEL RA53
MADE IN THE U.S.A
SERIAL NUMBER
53-
POWER: For connection to a Rolls PS12, or 12 VAC 300mA.
LINK: 1/4” TRS jack for connection to another RA53 LINK jack. Linking two units
together provides 10 channels of monitoring from a master stereo signal, with four
channels having an insert option.
RIGHT/STEREO INPUT: 1/4” TRS jack for connecting the “Right” side of a stereo
signal. If used alone, a 1/4” TRS plug with the “Right” side of the program material
on the tip, and the “Left” side on the ring may be connected for stereo operation.
For example, a stereo headphone output from a mixing console may be directly
connected to the Right/Stereo jack via a stereo TRS cable.
LEFT/MONO INPUT: 1/4” TS jack for connecting to the “Left” side of a stereo
signal. If used alone, a 1/4” TS plug with a mono signal will feed both sides of the
RA53 Outputs.
AUX INPUTS: RCA input jacks for connection to a signal source such as a CD or
cassette player.
CHANNEL 2 INSERT: 1/4” TRS jack for receiving a stereo signal and directly
accessing Channel Two output.
CHANNEL 1 INSERT: 1/4” TRS jack for receiving a stereo signal and directly
accessing Channel One output.
LINK: 1/4” TRS jack for connection to another RA53 LINK jack. Linking two units
together provides 10 channels of monitoring from a master stereo signal, with four
channels having an insert option.
RIGHT/STEREO INPUT: 1/4” TRS jack for connecting the “Right” side of a stereo
signal. If used alone, a 1/4” TRS plug with the “Right” side of the program material
on the tip, and the “Left” side on the ring may be connected for stereo operation.
For example, a stereo headphone output from a mixing console may be directly
connected to the Right/Stereo jack via a stereo TRS cable.
LEFT/MONO INPUT: 1/4” TS jack for connecting to the “Left” side of a stereo
signal. If used alone, a 1/4” TS plug with a mono signal will feed both sides of the
RA53 Outputs.
AUX INPUTS: RCA input jacks for connection to a signal source such as a CD or
cassette player.
CHANNEL 2 INSERT: 1/4” TRS jack for receiving a stereo signal and directly
accessing Channel Two output.
CHANNEL 1 INSERT: 1/4” TRS jack for receiving a stereo signal and directly
accessing Channel One output.
Date:
January 25, 1996
Sheet
1
o
f
1
Size
Document Number
REV
B
RA53.SCH
Title
HEADPHONE AMPLIFIER RA53
ROLLS CORPORATION
R703
10K
R707
10K
R709
10K
J6
PHONE 1/4
J8
RCA PC
MONO/LEFT
R701
10K
2
3
1
0
4
U7A
4560
R705
10K
C11
120PF
R711
47K
R407
10K
VCC
VEE
2
3
1
0
4
U8A
4560
R408
10K
1
3
2
P4A
P100K X2
4
6
5
P4B
P100K X2
C7
120PF
C8
120PF
CHANNEL 4
VCC
VEE
VEE
3
2
1
0
U4A
4560
6
5
7
8
U4B
4560
R401
10
J4
PHONE 1/4
R402
10
Q13
MPSA06
Q14
2N2907
Q15
MPSA06
Q16
2N2907
VCC
J11
PC 1/4
R403
30
R404
30
J1
PHONE 1/4
R107
10K
R108
10K
VCC
VCC
VEE
VEE
VCC
R101
10
R102
10
3
2
1
0
U1A
4560
Q1
MPSA06
6
5
7
8
U1B
4560
1
3
2
P1A
P100K X2
4
6
5
P1B
P100K X2
Q2
2N2907
Q3
MPSA06
Q4
2N2907
C1
120PF
C2
120PF
R104
30
R103
30
J2
PHONE 1/4
R207
10K
R208
10K
CHANNEL 1
CHANNEL 2
VEE
VCC
VCC
VEE
VCC
VEE
R201
10
R202
10
6
5
7
8
U2B
4560
3
2
1
4
U2A
4560
1
3
2
P2A
P100K X2
4
6
5
P2B
P100K X2
Q5
MPSA06
Q6
2N2907
Q7
MPSA06
Q8
2N2907
C3
120PF
C4
120PF
R204
30
R203
30
J5
PHONE 1/4
VCC
VEE
6
5
7
8
0
U5B
4560
R501
10
Q17
MPSA06
Q18
2N2907
J12
PC 1/4
R504
30
R712
47K
R507
10K
VCC
5
6
7
8
0
U8B
4560
VCC
VEE
1
3
2
P5A
P100K X2
C9
120PF
C13
10U
C16
10U
J7
PHONE 1/4
R708
10K
VCC
VEE
R704
10K
R710
10K
J9
RCA PC
STEREO/RIGHT
R702
10K
R706
10K
5
6
7
8
0
U7B
4560
C12
120PF
J10
PHONE 1/4
POWER
P508
10K
VEE
4
6
5
P5B
P100K X2
C10
120PF
C?
15 NP
R1
4.7K
2
3
1
J13
JAPDC
CHANNEL 5
VCC
VCC
VEE
Q20
2N2907
3
2
1
0
4
U5A
4560
R502
10
Q19
MPSA06
R503
30
C14
1K UF
C18
503
D3
1N4001
D1
1N4001
J3
PHONE 1/4
R307
10K
R308
10K
CHANNEL 3
VEE
VCC
VCC
VEE
VCC
VEE
R302
10
R301
10
6
5
7
8
U3B
4560
3
2
1
4
U3A
4560
1
3
2
P3A
P100K X2
4
6
5
P3B
P100K X2
Q9
MPSA06
Q10
2N2907
Q11
MPSA06
Q12
2N2907
C5
120PF
C6
120PF
R304
30
R303
30
VEE
VEE
D2
1N4001
D4
1N4001
C15
1K UF
D9
LDSG
R2
4.7K
R57
4.7K
SCHEMATIC
2
5