Rolls HM57 owner manual Introduction, Inspection, Connection, Specifications, Description

INTRODUCTION

Thank you for your purchase of the Rolls HM57 Headphone Monitor Interface. 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. Unpack and inspect the HM57 box and package.

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 factory.

CONNECTION

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 shown in the example below. Connect the DB25 cable from the HM57 Expansion jack to the input Expansion jack on the HM58 or HM59, whichever you are connecting your headphone to. Refer to the HM58 or HM59 Owners Manual for their proper operation.

MAIN MIXER

	SUB	MAIN
AUXILIARY SENDS	OUTPUTS	OUTPUTS

SPECIFICATIONS
Connectors:	8: 1/4” jacks, DB25 connector, Pwr jack
Power Requirement:	12 Volts AC
Dimensions:	5.625”W x 3.275”H x 1.325”D
Weight:	1 lb.

DESCRIPTION

BACK PANEL

1	2	3	4	R	L/MON	R/MON L/ST
	MONO				MAIN	AUX
	INPUTS				INPUTS	INPUTS
	HEADPHONE
	MONITOR
	INTERFACE					HM57
						12 - 17
						VAC
						+
	EXPANSION				PWR	-

To HM58 or HM59

MONO INPUTS: 4: 1/4” TRS balanced inputs for connection to a mixer 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: Power jack - connect to the Rolls PS12.

1	2	3	4	R	L/MON	R/MON L/ST
	MONO				MAIN	AUX
	INPUTS				INPUTS	INPUTS
	HEADPHONE
	MONITOR
	INTERFACE					HM57
						12 - 17
						VAC
						+
	EXPANSION				PWR	-

SCHEMATIC

C4427PF

J10

R4

13

VCC

25

20.0K1%

12

R1

AUX1

24

4560

10.0K1%

J1

PHONE1/4

11

C4327PF1

2

23

U1A

10

20.0K1%

3

22

R2

10.0K1%

9

R9

R3

21

C

VCC

R6

4

20.0K1%

8

8

10.0K1%

AUX2

VDD

20

D

4560

J2

PHONE1/4

7

6

19

E

7

U1B

R8

R7

6

5

18

F

20.0K1%

C42

5

27PF 10.0K1%

17

G

R14

4

20.0K1% 2

R11

J3

AUX3

16

H

10.0K1%

PHONE1/4

3

1

U2A

15

3

2

14

4560

C41

R1210.0K1%

1

VDD

VDD

27PF

R13

4

20.0K1%

R19

DB25

20.0K1%

VCC

8

R16

AUX4

C3827PF

4560

10.0K1%

J4

6

PHONE1/4

7

R3622K

U2B

5

R17

VCC

LRETURN/TRS

8

10.0K1%

R33

4560

J9PHONE1/4

C40 27PF

6

R18

C4727PF7

22K

R24

20.0K1%LEFTMAIN/

U4B

5

R34

20.0K1%

VCC

MONO

R351K

8

R21

J7

R40 22K

4560

PC1/4

R39

22K

MONO

6

10.0K1%

22K

RRETURN/

C39

7

27PF

U3B

5

R22

4560

2

J8

PHONE1/4

1

10.0K1%

R29

U4A

3

R37

R23

RIGHTMAIN

20.0K1%

1K

20.0K1%

R30

J6

PC1/4

R38

4560

4

22K

2

10.0K1%

1

VDD

U3A

3

R31

10.0K1%

D1

VCC

4

R32

2

1

3

J5

VDD

20.0K1%

3

7812I U17O

C62

C17

1

1N400X

C11

G

503

1U

2200UF

JAPDC

1 2

POWER

D5

Rolls Corporation

C12

7912

C14

LDSG

5143 South Main Street

D4

2200UF

G

10U

Salt Lake City, UT

84107

2

3

I U18O

TITLE:HEADPHONEMONITORINTERFACEHM57

R106

1N400X

VDD

10K

SIZE

Document Number:

REV

FXa HM57.SCH

A

Date: 26-Oct-1999

Sheet 1 of 1