Rolls PM57 User manual

SCHEMATIC
WARRANTY
To register this product, visit our website at www.rolls.com
PM57
HEADPHONE TAP
LR
___
__
_
|
VOLUME HEADPHONE
OUTPUTS
MONO
STEREO
POWER AMP LOOP
HEADPHONE TAP
PM57
-!!!DIRECT!!!NO AMP!!!!! !!!!!!
-AMP <50 WATTS -AMP >50 WATTS
WIRED INPUT
ATTENUATION SETTING:
PM57
Headphone Tap
-
Converts speaker level signals to
headphone level
- E
liminates heavy wedge monitors
- Passive - no power required The PM57 is the ideal device for anyone wanting to use headphones, rather than a wedge or speaker monitor. Drummers, instrumentalists, and sound professionals alike will benefit from the PM57.
Rolls Corporation Salt Lake City, UT 11/10
WARNING
USING THIS SYSTEM AT EXCESSIVE VOLUMES CAN
CAUSE PERMANENT HEARING DAMAGE.
USE AS LOW A VOLUME AS POSSIBLE
In order to use this system safely, avoid prolonged listening at
excessive sound pressure levels. Please use the following guide-
lines established by the Occupational Safety Health Administra-
tion (OSHA) on maximum time exposure to sound pressure levels
before hearing damage occurs.
90 dB SPL at 8 hours
95 dB SPL at 4 hours
100 dB SPL at 2 hours
105 dB SPL at 1 hour
110 dB SPL at 1/2 hour
115 dB SPL at 15 minutes
120 dB SPL - avoid or damage may occur
SPECIFICATIONS
Input Impedance: 150 Ω
Size: 2.75" x 3" x 1.25"
Weight: .5 lbs
It is difficult to measure the exact Sound Pressure Levels (SPL) present at the ear-
drum in live applications. In addition to the volume setting on this Personal Monitor
unit, the SPL in the ear is affected by ambient sound from floor wedges or other
devices. The isolation provided by the fit of quality earphones is also an important
factor in determining the SPL in the ear.
Follow these guidelines in the use of this product to protect your ears from damage:
1. Turn up the volume only to the point where hearing is comfortable.
2. Ringing in the ears may indicate that the levels are too high. Lower the volume
level.
3. Have your ears checked by an audiologist on a regular basis.
4. ALWAYS START WITH THE VOLUME AT 0 OR OFF THEN GRADUALLY
TURN IT UP TO A COMFORTABLE LEVEL!
75889 00570
67
INTRODUCTION
Thank you for your purchase of the PM57 Headphone Tap. The
PM57 is for connecting headphones to a speaker line. The 1/4”
Mono/stereo loop jacks are for cascading more boxes in series.
There are two headphone jacks and volume control. The Head-
phone Tap uses the speaker line signal for power, therefore
requires no batteries or external power.
ALWAYS SET THE ATTENUATION SWITCH TO THE PROPER
SETTING FOR YOUR INTENDED USE BEFORE CONNECTING
ANYTHING TO THE PM57 (INPUTS, OUTPUTS AND LOOPS).
THIS IS VERY IMPORTANT FOR YOUR SAFETY, THE SAFETY
OF THE PM57, AND ALL OTHER EQUIPMENT YOU WILL BE
USING WITH THE PM57!!!!!!!!!
1
ROLLS CORPORATION
5968 So 350 West
MURRAY UTAH 84107
15 NOVEMBER 2010
Document Number:
Date:
Rev:
Sheet of
Ba
PM57 HEADLINE TAP
PM57.SCH A
STEREO
MONO
J1
PHONE 1/4
J2
PHONE 1/4
J4
PHONE 1/4
12
3
SW1A
DPDT
P1B
10KC
P1A
10KC
R2 470
R1 470
13
4
2
9
CASE
SW2A
DP3THOR
86
5
7SW2B
DP3THOR
R34.7K
R44.7K
SCREW TERM
RIGHT
LEFT
1
H1A HD3
2
H1B
HD3
3
H1C HD3
J5
JK3.5ST

LR
___
__
_
|
VOLUME HEADPHONE
OUTPUTS
MONO
STEREO
POWER AMP LOOP
HEADPHONE
TAP
PM57
-!!!DIRECT!!!NO AMP!!!!! !!!!!!
-AMP <50 WATTS
-AMP >50 WATTS
WIRED INPUT
ATTENUATION SETTING:
ATTENUATION SWITCH: This is a
three way switch for selecting the level
of attenuation to the headphones. Fol-
low the silk screening on the unit for
proper settings.
AMP >50 WATTS: For amps above 50
watts in size
AMP <50 WATTS: For amps 50 watts
and lower.
DIRECT: This is NOT FOR AN AM-
PLIFIER INPUT (ANYTHING WITH
WATTAGE)! This is only used for AT-
TENUATING THE LEVEL OF HEAD-
PHONE LEVEL INPUTS plugged into
the loop section. When selected you
can use the PM57 as a headphone
volume attenuator. Just plug your
headphone signal into the POWER
AMP LOOP section of the PM57. Then
plug headphones into the headphone
output section of the PM57 and use the
volume to control the level.
IF YOU USE THE DIRECT SET-
TING FOR AN AMPLIFIER INPUT
OF ANY SIZE, OR A SETTING
THAT IS NOT RECOMMENDED
FOR THE LEVEL OF POWER
YOU ARE PUTTING INTO THE
PM57 YOU WILL BLOW OUT THE
PM57’S VOLUME POT.
IF THIS OCCURS YOU WILL
HAVE TO SEND THE UNIT BACK
TO THE FACTORY FOR RE-
PLACEMENT OF THE VOLUME
POT. THIS IS NOT COVERED
UNDER ANY WARRANTY, AND
YOU WILL BE RESPONSIBLE
FOR THE COST OF REPAIR. THE
ONLY WAY TO DAMAGE THE
VOLUME POT IS TO IMPROP-
ERLY USE THE PM57 WITH TO
MUCH WATTAGE PLUGGED IN
TO THE PM57 OR THE ATTENU-
ATION BEING ON THE WRONG
SETTING. THIS CAN ALSO
CAUSE PERMANENT DAMAGE
TO YOUR HEADPHONES, AND
YOUR EARS. PLEASE BE CARE-
FUL!!!!!!!!!!!!!!!!!!!!!
HEADPHONES: One
1/4” and one 1/8”
stereo TRS jacks for
connection to stereo
headphones ONLY. If
you plug a mono head-
phone into either jack it
will damage the PM57.
VOLUME:
Controls the
level of the
signal to the
headphones.
POWER AMP LOOP: Two paralleled
1/4” stereo TRS jacks, one for receiv-
ing the input signal, and the other for
connecting to a speaker or other input
device. TRS for stereo. TS for MONO.
When using the LOOP if the input is
stereo the output must be stereo only.
If using LOOP for mono both must be
mono.
MONO/STE-
REO Switch:
Selects
between
a Mono or
Stereo input.
For the
Power Amp
Loop Input
or the Wired
Input.
ALWAYS SET THE ATTENUATION SWITCH TO THE PROPER SETTING FOR YOUR INTENDED USE BEFORE CONNECTING ANYTHING
TO THE PM57 (INPUTS, OUTPUTS AND LOOPS). THIS IS VERY IMPORTANT FOR YOUR SAFETY, THE SAFETY OF THE PM57 AND ALL
OTHER EQUIPMENT YOU WILL BE USING WITH THE PM57!!!!!!!!!
DESCRIPTION
WIRED
INPUT: This
is the same
input as the
POWER
AMP LOOP
input, it just
has screw
terminal
connections.
Use left for
mono.