smart acoustic SPM120 User manual

OPERATION MANUAL
SPM120 - PERSONAL MONITOR HEADPHONE AMP

01. Features & Specications
SPM120 is an active converter for personal monitor application,
with a built-in battery. An XLR or 1/4” jack can be connected to
the personal monitor. The volume knob adjusts the output level
and powers the unit o when turned counterclockwise. The
adjacent green LED will light when the power is on. The inner
switch should be set to MONO when used with a mixer’s aux
send or any other mono source and set to STEREO when
connected to a headphone output or other stereo source.
Input channels: Stereo/Mono internal source switch
Analog inputs: 1 x XLR 1/4” jack combo (line in)
Analog outputs: 1 x 1/8” (headphone)
Size: 40mm*40mm*158mm
Material: Aluminium
Net weight: 258g

1. lnput for XLR or 1/4” Jack male plug for connection
to the personal monitor.
2. Volume knob adjusts the output level and powers the
unit o when turned fully counter clockwise.
3. The green LED will light when the power is on and
battery indicator.
4. Headphone output allows connection of a 1/8” stereo
mini jack.
5. Belt clip attaches to a belt or waist band for hands-free use.
6. Battery cover button. Press the button and slide the shell
to the input connector direction.
7. Battery slots allow the unit to be powered by a pair
of AAA batteries.
8. The switch should be set to mono when used with a mixer’s
aux send or any other mono source (near battery position)
and set to stereo when connected to a headphone output
tor other stereo source (near input connector).

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02. Installation of Battery
This button allows
access to the
batteries. Hold the
RELEASE button
down and slide the
outer shell down
toward the input jack
to expose the unit’s
interior. Insert the
batteries into battery
slots and insert the
unit’s interior back
into position.
03. Connection of SPM120