L
R
___
__ _ |
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.
