Rolls HM57 User Manual

LIMITED WARRANTY

This product is warranted to the original consumer purchaser to be free from
defects in materials and workmanship under normal installation, use and service for a
period of one (1) year from the date of purchase as shown on the purchaser’s receipt.

The obligation of Rolls Corporation under this warranty shall be limited to repair
or replacement (at our option), during the warranty period of any part which proves
defective in material or workmanship under normal installation, use and service, provided
the product is returned to Rolls Corporation, TRANSPORTA TION CHARGES PRE­PAID. Products returned to us or to an authorized Service Center must be accompanied by
a copy of the purchase receipt. In the absence of such purchase receipt, the warranty
period shall be one (1) year from the date of manufacture.

This warranty shall be invalid if the product is damaged as a result of deface­ment, misuse, abuse, neglect, accident, destruction or alteration of the serial number,
improper electrical voltages or currents, repair, alteration or maintenance by any person or
party other than our own service facility or an authorized Service Center, or any use
violative of instructions furnished by us.

This one-year warranty is in lieu of all expressed warranties, obligations or
liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR LIABILITIES,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MER­CHANT ABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE
LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN
LIMITED WARRANTY. Some states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply to you.

HM57

Headphone Monitor Interface

1

2

MONO

INPUTS

3

HEADPHONE
MONITOR
INTERFACE

EXPANSION

4

R

MAIN

INPUTS

L/MON

R/MON L/ST

AUX

INPUTS

HM57

12 - 17

VAC

+

PWR

-

IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL, INCIDENTAL
OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER
WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not allow
the exclusion or limitation of special, incidental or consequential damages so the above
limitation or exclusion may not apply to you. This warranty gives you specific legal
rights, and you may also have other rights which vary from state to state.

ROLLS CORPORATION

SAL T LAKE CITY, UT AH

3/00

NOTE: This unit connects to a Rolls HM59 or HM58
Headphone Monitor Remote for proper operation.

OWNERS MANUAL

INTRODUCTION

CONNECTION

Thank you for y our purchase of the Rolls HM57 Headphone Monitor Interf ace.
This unit connects four mono 1/4” input signals and two main stereo mix signals to
either the HM58 or HM59 Headphone Monitor Remote. All signals are controlled
from the Remote units.

INSPECTION

1. Unpac k and inspect the HM57 bo x and pac kage .
If obvious physical damage is noticed, contact the carrier immediately to make a
damage claim. We suggest saving the shipping carton and packing materials for
safely transporting the unit in the future.

2. Please complete the Warranty Registration Card and return it to the f actory.

SPECIFICATIONS

Connectors: 8: 1/4” jacks, DB25 connector , Pwr jack
Power Requirement

: 12 V olts AC
Dimensions: 5.625”W x 3.275”H x 1.325”D
Weight: 1 lb.

DESCRIPTION

BACK PANEL
MONO INPUTS: 4: 1/4” TRS balanced inputs for connection to a mix er auxiliary
outputs or equivalent.
MAIN INPUTS: 2: 1/4” TRS balanced inputs for connection to a mixer right and left
sub outputs or equivalent. The Left input is used for a mono source and will feed
both sides.
AUX INPUTS: 2 inputs to be used as stereo effects returns, or as a second pair of
stereo inputs. The Right input is used for a mono source and will feed both sides .
The Left input is a TRS jack that will accept a stereo input on the Tip and Ring.

FRONT PANEL
EXPANSION: 24 pin female OUTPUT jack.
PWR: LED indicating power is connected to the HM57.
12-17 VAC: P o w er jac k - connect to the Rolls PS12.

2

1

MONO

INPUTS

4

3

R

MAIN

INPUTS

L/MON

R/MON L/ST

AUX

INPUTS

HEADPHONE
MONITOR
INTERFACE

EXPANSION

PWR

HM57

12 - 17

VAC

+

-

Connect the HM57 power supply (the PS12) to an AC outlet and the HM57.
Connect the audio cables from the mixer to the unit as sho wn in the e xample
below . Connect the DB25 cable from the HM57 Expansion jack to the input
Expansion jack on the HM58 or HM59, whichev er you are connecting your
headphone to. Refer to the HM58 or HM59 Owners Manual f or their proper
operation.

MAIN MIXER

AUXILIARY SENDS

2

3

1

MONO

INPUTS

HEADPHONE
MONITOR
INTERFACE

EXPANSION

SUB

OUTPUTS

4

R

L/MON

MAIN

INPUTS

PWR

OUTPUTS

R/MON L/ST

AUX

INPUTS

HM57

12 - 17

MAIN

VAC

+

-

To HM58 or HM59

SCHEMATIC

2 7 P F

C 4 4

R 4

2 0 . 0 K 1 %

R 1

4 5 6 0

1

U 1 A

R 6

4

1 0 . 0 K 1 %

VDD

R 8

C 4 2

2 0 . 0 K 1 %

R 1 4

2 0 . 0 K 1 %

1

U 2 A

4 5 6 0

VDD

4

R 1 9

VCC

8

4 5 6 0

7

U 2 B

2 7 P F

C 4 0

R 2 4

VCC

8

4 5 6 0

6

U 3 B

5

R 3 1

1 0 . 0 K 1 %

R 3 2
2 0 . 0 K 1 %

T I T L E : H E A D P H O N E M O N I T O R I N T E R F A C E H M 5 7

S I Z E

Date: Sheet of

2 7 P F

C 4 1
2 7 P F

6
5

R 2 1

1 0 . 0 K 1 %
R 2 2

1 0 . 0 K 1 %
R 2 3
2 0 . 0 K 1 %

2
3

2
3

1 0 . 0 K 1 %

R 3

2 0 . 0 K 1 %

1 0 . 0 K 1 %

1 0 . 0 K 1 %

R 1 6
1 0 . 0 K 1 %

2 0 . 0 K 1 %

FXa

26-Oct-1999

R 2 1 0 . 0 K 1 %

R 7

R 1 1

R 1 2 1 0 . 0 K 1 %

R 1 3
2 0 . 0 K 1 %

R 1 7

1 0 . 0 K 1 %

R 1 8

Document Number:

HM57.SCH

J 1

J 2

J 3

J 4

L E F T M A I N /

J 7

R I G H T M A I N

J 6

Rolls Corporation

5143 South Main Street

Salt Lake City, UT 84107

A U X 1

A U X 2

A U X 4

M O N O

P H O N E 1 / 4

P H O N E 1 / 4

A U X 3

P H O N E 1 / 4

P H O N E 1 / 4

P C 1 / 4

P C 1 / 4

R E V
A

1

1

J 5

J A P D C

J 1 0

13

VCC

25
12
24
11
23
10
22
9

C

21
8

D

20
7

E

19
6

F

18
5

G

17
4

H

16
3
15
2
14
1

D B 2 5

R 3 6 2 2 K

4 5 6 0

2 7 P F

C 4 7

7

R 4 0 2 2 K

R 3 9
2 2 K

4 5 6 0

2

1

U 4 A

3

R 3 8
2 2 K

4

VDD

D 1

2
3

1 N 4 0 0 X

1

D 4

1 N 4 0 0 X

VDD

2 7 P F

C 3 8

VCC

8

R 3 3

6

2 2 K
R 3 4

U 4 B

5

1 K

R 3 5
2 2 K

R 3 7

1 K

1

7 8 1 2
C 1 1
2 2 0 0 U F

C 1 2

2 2 0 0 U F

2

L R E T U R N / T R S

J 9

P H O N E 1 / 4

M O N O

R R E T U R N /

J 8

P H O N E 1 / 4

1

VCC

3

U 1 7

I

O

C 6 2

G

2
1

7 9 1 2

G

3

U 1 8

I

O

C 1 7

5 0 3

1 U

C 1 4
1 0 U

R 1 0 6
1 0 K

VDD

7

4 5 6 0

P O W E R

C 3 9

R 2 9

2 0 . 0 K 1 %

U 3 A

D 5
L D S G

4 5 6 0

VDD

2 0 . 0 K 1 %

R 9

4

2 7 P F

C 4 3

VCC

8

6

U 1 B

5

2 0 . 0 K 1 %

2 0 . 0 K 1 %

7

2 7 P F

R 3 0

2

1 0 . 0 K 1 %

3