Rolls HM60 User manual

HM60
Headphone Monitor System
OWNERS MANUAL
ROLLS CORPORATION
SALT LAKE CITY, UTAH
3/00
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, TRANSPORTATION CHARGES PRE-
PAID. 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 deface-
ment, 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 MER-
CHANTABILITY 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.
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.
PWR
64 125 250 500 1K 2K 4K 8K 16K
EQUALIZER
MASTER
LEVEL
PHONE/
LEFT RIGHT AGC
COMP
EFFECTS
RETURN
HEADPHONE
MONITOR
SYSTEM
0
+12
-12
MIX LEVELS
MAIN
1234
MIX OUTPUT
EFFECTS SENDS
1234
EFFECTS
SEND STEREO
INPUTS EFFECTS
RETURN
EXPANSION 120 VAC
50/60Hz
MONO INPUTS
R L/MON R/MON L/ST
HM60

INTRODUCTION
Thank you for your purchase of the Rolls HM60 Headphone Monitor System.This
unit allows you to mix four mono signals with two stereo signals for your own
personal monitoring needs.It includes equalization and AGC compression.When
coupled with an HM59 or HM58 Headphone Monitor Remote units, the custom
mixing can be controlled in separate locations.
Please read the following manual carefully to get the best results from your HM60.
TABLE OF CONTENTS
Introduction 1
Table of Contents 1
Inspection 1
Specifications 1
Description
Top Panel 2
Front Panel 2
Bottom Panel 2
Connection 3
Operation 4
Block Diagram 5
Schematic 6
Warranty Rear Cover
INSPECTION
1.Unpack and inspect the HM60 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.
SPECIFICATIONS
OutputImpedance: 10 Ω
Sensitivity: Variable, -10 to +4 dB for rated output
PowerOutput: >500 mW at 32 Ω
(>150 mW at 600 ohms) 20 Hz to 20 KHz.
Connectors: Inputs:
Outputs:1/4" TRS stereo headphone jack,
DB25 jack
Distortion: 0.008%THD full power @ 1 KHz;
0.05% THD 20Hz to 20 KHz
Dynamic Range: Greater than 96 dB
Freq.Response: 20 Hz to 20 KHz, +0, -1 dB 400 mW output
Power Requirement : Rolls PS12 12VAC power supply
Dimensions (HxWxD): 6.3” x 10.25” x 1.625”
Weight: 3 lbs.
1 6
SCHEMATIC
Sheet 1
ROLLS CORPORATION
5143 South Main Street
Salt Lake City, UT 84107
15-Oct-1999
Title: ROLLS PERSONAL MONITOR SYS. HM60 Size:
Date:
Rev:
of
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D o c u m e n t N u m b e r
H M 6 0 . S C H A
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VCC
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R 1 0 6 4 . 7
J 1 1
P H O N E 1 / 4
3 2
1
4
U 6 A
4560
6 5
7
8
U 1 B
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2 3
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Q 1
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6 5
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6 5
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4
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23
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R 4 2 0 . 0 1 %
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6 5
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R 2 7 1
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L M A I N
R M A I N
R R E T L R E T
R 6 1 1 0 R 1 2 3 1 0
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P 6 P100 P 7 P100 P 8 P100 P 9 P100
R 4 3 22
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1
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4560
VDD
VCC
1
E 2 W I R E
1
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W I R E
1
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THD
8DG 3RIN 2RC 1
GND
4
INV 5
R3 6
OUT 7
V+ 0
U 1 9 A
N E 5 7 0
2 31
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2 31
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2 31
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R 7 3 1
R 8 3 1
R 7 4
100
R 8 4 100
6 57
8
U 1 0 B
4560
R 8 1 1
R 8 2 100
VCC
R 8 6 10
R 6 3 1 0
6 5
7
8
U 1 1 B
4560
C 4
1 U F
C 6 6
1 . 5 U F
46
5
P 1 3 B
46
5
P 1 4 B
46
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P 1 5 B
46
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P 1 6 B
46
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P 1 7 B
46
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P 1 8 B
46
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P 1 9 B
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R 5 4 3 3
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C 1
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C 2 10U
C 3 10U
C 5 10U
C 1 5 1 U
1
23
S W 2 A D P D T
J 1 0
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THD
9DG
14 RIN 15 RC 16
GND
0
INV 12
R3 11
OUT 10
V+ 13
U 1 9 B
N E 5 7 0
R 5 8 3 3
R 5 7 3 3
C 7
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C 8
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2 31
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U 1 4 A
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U 1 5 A
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R 9 8 1
R 1 0 4 1
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R 1 0 5 100
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P 1 4 A
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P 1 8 A
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P 1 9 A
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P 2 0 A
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J 1 P H O N E 1 / 4 J 3 P H O N E 1 / 4 J 2 P H O N E 1 / 4 J 4 P H O N E 1 / 4
VCC
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R I G H T O U T
H D P H N / L O U T
I
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H 7 C
1
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C 3 4 2 7 P F
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C 5 0 .0039 C 5 2 820PF C 5 4 270PF
C 5 6 C 5 8 C 3 2 C 6 0 . 0 3 9
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C 3 7 2 7 P F
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C 3 9 2 7 P F
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C 4 0 2 7 P F
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C 4 2 2 7 P F
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C 4 5 2 7 P F C 4 6 2 7 P F
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H 8 B
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H 4 B
1
H 4 A
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H 8 A
6
H 5 F
6
H 1 F
5
H 5 E
5
H 1 E
4
H 5 D
4
H 1 D
3
H 5 C
3
H 1 C
2
H 5 B
2
H 1 B
1
H 5 A
1
H 1 A
5
H 7 E
5
H 3 E
3
H 8 C
3
H 4 C
4
H 8 D
4
H 4 D
5
H 8 E
5
H 4 E
6
H 8 F
6
H 4 F
1
H 6 A
1
H 2 A
2
H 6 B
2
H 2 B
3
H 6 C
3
H 2 C
4
H 6 D
4
H 2 D
5
H 6 E
5
H 2 E
VCC
VCC VCC VCC VCC
VCC VCC
VDD VDD VDD VDD
VDD VDD VDD VDD
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C 6 9 . 1
VDD
C 7 0 . 1
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C 7 3 . 1
VDD
C 7 4 . 1
VCC
C 7 8 . 1
C 7 9 . 1
VCC VDD
C 8 0 . 1
C 8 1 . 1
VCC VDD
C 8 7 . 1
VDD
C 8 8 . 1
VCC
C 9 4 . 1
C 9 5 . 1
VCC VDD
R 7 6 10
R 7 7 10
VDD VDD
A
B
C
D
E
F
G
H
D 3 1N 400X
D 1 1N 400X D 2 1N 400X
D 4 1N 400X
P O W E R
R R E T U R N / M O N O
L R E T U R N / T R S
R I G H T M A I N
A U X 2
1 0 . 0 1 %
R 4 5
22
22
22
22
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C 6
C 6 7
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470PF
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5 2
DESCRIPTION
TOP PANEL
MONO INPUTS:Four 1/4”TS unbalanced jacks labeled 1 - 4, for connection to
line-level sources such as a mixer’s auxiliary sends or monitor
sends.
EFFECTS SEND:1/4”TS unbalanced jack for connection to the input of a signal
processor such as a reverb or multi-effects processor.
STEREO INPUTS:Two 1/4”TRS balanced jacks for connection to a line level
source such as a mixer’s cue send or headphone output.
The Left input is the MONO input and will feed both the right and
left channels.
EFFECTS RETURN:Two 1/4”TS unbalanced jacks for connection to the output of
a signal processor such as a reverb or multi-effects processor.
The Right input is the MONO input and will feed both the right
and left return channels.
The Left input is STEREO and requires aTip-Ring-Sleeve plug if
it is to be used alone.
EXPANSION: 25-pin connector - contains all the input signals;the four mono
inputs, the main stereo inputs, the effects returns and the power.
It connects to the Rolls HM58 or HM59 Headphone Monitor
Remote units.Consult their respective owners manuals for more
information on connecting and operating them properly.
120VAC:Power cord - connect to a properly grounded ac outlet.
FRONT PANEL
EFFECTS SENDS:These controls adjust the level of signal sent from the
corresponding input to the EFFECTS SEND jack.
EFFECTS RETURN:Adjusts the level of stereo signal returning from a signal
processor (or whatever is connected to the Effects Return jack(s).
These inputs may also be used as an additional set of stereo
inputs.
MIX LEVELS:Controls 1 - 4 and Main; adjust the level of input signal from the
correspondinginput.
MASTER LEVEL:Adjusts the amount of mixed signal sent to the Mix Output
jacks.
EQUALIZER:These slider controls adjust the level of the indicated frequency.For
example, the 64 slider boosts or cuts the 64 Hertz component of
the output signal by + or - 12 dB.
PWR:Indicates that the HM60 is connected to a power source and is on.
BOTTOM PANEL
MIXOUTPUT:
Phone/Left: For connection to a set of stereo headphones.If a monoTip-
Sleeve plug is connected, this jack becomes the Left Output.
Right: Contains the Right portion of the Output signal.
AGC COMP:This switch engages the Automatic Gain Control compressor.
BLOCK DIAGRAM
Unbal
FX Send
L
R
L
R
4
3
2
1
TRS
Balanced
Inputs
TRS
Balanced
Main
Inputs
Unbal
FX
Returns
MONO MIXES
FX
RETURN
MAIN LEVEL
EQUALIZER
EQUALIZER
2:1
COMPRESSOR
2:1
COMPRESSOR
Headphone
Output
COMRPESSOR
IN/OUT
FX SEND LEVELS
MASTER
OUTPUT
LEVEL
DB25
MULTI-PIN
CONNECTOR
-V
+V

CONNECTION
Make sure the HM60 is connected to a properly grounded AC outlet.Before
turning on the HM60 power switch, make all audio connections.
Shown below is an example for connecting your HM60 to a mixer.
PWR
64 125 250 500 1K 2K 4K 8K 16K
EQUALIZER
MASTER
LEVEL
PHONE/
LEFT RIGHT AGC
COMP
EFFECTS
RETURN
HEADPHONE
MONITOR
SYSTEM
0
+12
-12
MIX LEVELS
MAIN
1234
MIX OUTPUT
EFFECTS SENDS
1234
FX
SEND
RL/MON
STEREO
INPUTS
R/MON L/ST
EFFECTS
RETURN
EXPANSION 120 VAC
50/60Hz
MONO INPUTS
To HM58
or HM59
REMOTE
UNITS
AUXILIARY SENDS MAIN
OUTPUTS
SUB
OUTPUTS
MAIN MIXER
Shown below is an example for proper connection to a signal processor.
PWR
64 125 250 500 1K 2K 4K 8K 16K
EQUALIZER
MASTER
LEVEL
PHONE/
LEFT RIGHT AGC
COMP
EFFECTS
RETURN
HEADPHONE
MONITOR
SYSTEM
0
+12
-12
MIX LEVELS
MAIN
1234
MIX OUTPUT
EFFECTS SENDS
1234
FX
SEND
RL/MON
STEREO
INPUTS
R/MON L/ST
EFFECTS
RETURN
EXPANSION 120 VAC
50/60Hz
MONO INPUTS
To HM58
or HM59
Reverb unit or other effects processor
IN OUT RIGHTOUT LEFT
3 4
OPERATION
OPERATING THE HM60
The HM60 can be operated as a stand-alone monitor mixer and headphone
amplifier, or as a distribution system.
After proper connections are made, begin sending signals to the HM60.
•Set the Master Level control at approximately 12 O’clock.Carefully bring up the
1-4 and Main Mix Levels until a desired mix is achieved.
•Adjust the Equalizer as needed.The 64, 125, and 250 Hz sliders control the
lower or bass frequencies, the 500, 1K, and 2K sliders adjust the middle frequen-
cies, the the 4K, 8K, and 16K sliders vary the high or treble frequencies.
•The AGC compressor keeps transient signals like pops or feedback under
control, so they won’t damage your hearing.It also slightly brings up low-level
signals. NOTE:Much of the signal content may not be compressed, you may not
notice any effect.Only very high level or low level signals are effected.
•To use external effects processors, connect the FX Send jack to the Input of your
effects unit, connect the output(s) of the processor to the Effects Return jacks
(See the connection example on Page 3). If you are using a mono signal out of the
processor, use the Right/Mono jack.
The Effects Send controls 1 - 4 and Main adjust the amount of signal from the
indicated input out the Effects Send jack and to your effects processor. Adjust the
Output Level of your processor along with the HM60 Effects Return control to set
a desired amount of effect you want.
OPERATING THE HM60WITH THE HM59 OR HM58 HEADPHONE MONITOR
REMOTES.
Combining the HM60 with the HM59 or HM58 Headphone Monitor Remote units
allows users to make and control their own monitor mix.
After proper connection of the HM60 to the audio sources, connect the DB25
cable to the HM59 or HM58.From those units, more HM59 and HM58 units may
be connected.
NOTE:The Effects Sends, Mix Levels, Effects Return, Master Level,
AGC Compressor, and Equalizer on the HM60 will have no effect
on the signals sent out the DB25 cable to the HM59 or HM58.
Refer to the HM58 or HM59 Owners Manual for their proper opera-
tion.