INTRODUCTIONThank you for your purchase of the Rolls HM58 Headphone Monitor Remote. Thisunit, along with either the HM60 Headphone Monitor System or HM57 Head-phone Monitor Interface, allows you to mix four mono signals with two stereosignals for your own personal monitoring needs. It includes equalization and AGCcompression.Please read the following manual carefully to get the best results from your HM58.TABLE OF CONTENTSIntroduction 1Table of Contents 1Inspection 1Specifications 1DescriptionBack Panel 2Front Panel 2Connection 3Operation 4Block Diagram 5Schematic 6Warranty Rear CoverINSPECTION1. Unpack and inspect the HM58 box and package.If obvious physical damage is noticed, contact the carrier immediately to make adamage claim. We suggest saving the shipping carton and packing materials forsafely transporting the unit in the future.2. Please complete the Warranty Registration Card and return it to the factory.SPECIFICATIONSOutput Impedance: 10 ΩSensitivity: Variable, -10 to +4 dB for rated outputPower Output: >500 mW at 32 Ω(>150 mW at 600 ohms) 20 Hz to 20 KHz.Connectors: Outputs: 1/4" TRS stereo headphone jack,DB25 (25 pin) jackDistortion: 0.008% THD full power @ 1 KHz;0.05% THD 20Hz to 20 KHzDynamic Range: Greater than 96 dBFreq. Response: 20 Hz to 20 KHz, +0, -1 dB 400 mW outputPower Requirement: Receives power from HM60 or HM57Dimensions: 7.5” W x 3.35” H x 1.625”DWeight: 1.5 lbs.1 6SCHEMATIC

ROLLS CORPORATION

5143 South Main Street

Salt Lake City, UT 84107

15-Oct-1999

Title

Size:

Date:

Rev:

1 of

Rb

R O LL S H EA D P H O N E M O N IT O R SY S T E M R E M O T E 2
D O C U M E N T N U M B E R
H M 5 8 . S C H A
VCC
VCC
VDD
VDD
VDD
VCC
VCC
J1
P H O N E 1 /4
3
2
1
4
U 1 A
4560
Q 1
M P S A 0 6
6
5
7
8
U 1 B
4560
1 3
2
P 1 0 A
P 10 0 K X 2
46
5
P 1 0 B
P 10 0 K X 2
Q 3
2N2907
Q 2
M P S A 0 6
Q 4
2N2907
R 1
30
R 2
30
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
J3
D B 25 f e m a le
3
4
L M A IN
R M A IN
R R E T L R E T
R 3
10
R 4
10
P 6
P100K
P 7
P100K
P 8
P100K
P 9
P100K
8
9
10
11
R 5
22K
R 6
22K
4 6
5
P 2 B
P 10 0 K X 2
1 3
2
P 2 A
P 10 0 K X 2
4 6
5
P 1 B
P 10 0 K X 2
1 3
2
P 1 A
P 10 0 K X 2
R 7 22 K
R 8 22 K
THD
8
DG
3
RIN
2
RC
1
GND
4
INV 5
R3 6
OUT 7
V+ 0
U 4 A
N E 5 7 0
2
31
4
U 2 A
4560
R 1 9
18K
R 2 1 10 K
6
5
7
8
U 2 B
4560
46
5
P 3 B
46
5
P 4 B
46
5
P 5 B
R 9
22K
R 1 0
22K
R 1 1
22K
R 1 2 22 K
R 1 32 2 K
R 1 4 22 K
R 1 52 2 K
R 1 6 2 2 K
R 2 9 3 3 K
R 3 0 3 3 K
C 1
10U
C 2
10U
C 3
10U
C 4
10U
12
14
15
16
17
1
23
S W 1 A
D P D T
THD
9
DG
14
RIN
15
RC
16
GND
0
INV 12
R3 11
OUT 10
V+ 13
N E 5 7 0
R 3 13 3 K
R 3 23 3 K
C 5
10U
C 6
10U
C 7
10U
C 1 0
1U
18
19
20
4
56
S W 1 B
D P D T
VCC
R 3 3
100K
R 3 4
100K
2
31
4
U 3 A
4560
R 2 01 8 K
R 2 2 10 K
6
5
7
8
U 3 B
4560
13
2
P 3 A
13
2
P 4 A
13
2
P 5 A
VDD
H D P H N / L O UT
C 1 1
27 P F
C 1 2
27 P F
C 1 3
27 P F
C 1 4
27 P F
120PF
C 1 8
120PF
C 1 5
27 P F
C 1 6
27 P F
VCC VCC
C 1 9
.1
21
VDD
C 2 0
.1
22
VCC
C 2 1
.1
23
VDD
C 2 2
.1
24
VCC
C 2 3
.1
25
26
C 2 5
.1
27
VCC
R 2 3
10K
R 2 4
10K
R 3 5
4. 7 K
R 3 6
4. 7 K
R 3 9
2. 2 K
R 4 0
2. 2 K
R 2 5
10K
C 3 1
.0 2 2
C 3 3
.0 0 5
33
34
35
36
R 2 6
10K
R 2 7
10K
R 3 7
4. 7 K
R 3 8
4. 7 K
R 4 1
2. 2 K
R 4 2
2. 2 K
R 2 81 0 K
C 3 2
.0 2 2
C 3 4
.0 0 5
VDD
VDD
C 3 5
.0 0 5
C 3 6
.0 0 5
C 3 7
.0 4 7
C 3 8
.0 4 7
VCC
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
J2
VDD
B A S S
M ID D L E
TR E B L E
R 1 7
22K
D 1
LD S R
R 4 3
3. 3 K