Yamaha EM-150 Owner's manual

Yamaha EM-150 Owner's manual
You may seriously damage any transistorized audio
unit by being careless when you first operate it. Care-
lessness is the maior cause of audio repairs. Avoid
disappointment by following the precautions listed
here BEFORE plugging in or attempting to operate
your EM-150.
e Before you plug in the power cord please check
that the voltage selector is set to your local current.
If not properly set, turn the knob and reset it to
the correct voltage position.
Voltage settings: 110, 130, 220, 240V.
U.S., Canadian, European and Australian models are
set to the proper voltage before shipment.
e Make sure the power switch is off before plugging
in the power cord.
e Unpiug the power cord as a safety measure, or at
the very least be sure the power switch is off,
before connecting or disconnecting any cords.
® Protect the unit from heat, humidity, dust and
shocks. Keep the unit away from direct sunlight
or other sources of heat.
e Be sure there is sufficient space around, behind and
under the unit for proper ventilation.
e Do not switch input selectors while the amp is
in use.
O Monitor Out Jacks
Use these jacks when feeding the mixed signal to
a combination amp/speaker (music amp) unit for
extra power (for large hall performances, etc.).
Q Rec. Out Jacks
These jacks are for feeding the signal to a tape
deck or recorder for recording. These jacks have
the unusual feature of serving as signal input ter-
minals as well, when the signal is from another EM
unit. See page 5 for details.
@ Aux. Jacks
@ AC Outlet (not provided in certain areas) These jacks are for use when playing a signal from
© Fuses another audio sound source. They are useful for
Replace with a fuse of the same vaiue. record player signals, or for playing back the sound
© Power Switch from a recorded tape. Also use these jacks to
O Speaker Jacks feed the signal from another EM unit when extra
These jacks are for the YES speakers (ES-90A or channels are needed.
ES-130). If any other speakers are connected to @ Echo Jacks
these jacks, be sure to verify that they are 8 types, Feed the signal out to an echo unit via the To
and that their maximum allowable input is not too Echo jack, then back in through the From Echo
low for the YES output. jack.
Extra Channels with a Second Unit
A second unit can be connected for extra channels
in two ways:
(A) Connect from the sub unit Rec. Out jacks to
the main unit Aux. jacks. In this case the volume
can be controlled by the main unit Aux. Volume
{В} Connect from the sub unit Rec. Out jacks to
the main unit Rec. Out jacks. In this case the volume
Is controlled by the main unit Master Volume knob.
If you wish a separate volume control independent
of the Master Volume, use (A) connection; if you
do not, use (B).
O Input Selectors
Each selector has three settings. Use LINE for a
signal from an audio unit such as a tape deck, record
player, etc. Use INST. for electric guitar, bass,
combo organ and any other electric instrument.
MIC is for a microphone connection, regardless of
whether the microphone is used for voice or for a
wind instrument, acoustic guitar, etc.
Balance Controls
Each control can be used to divide that channel
input between left and right channels, for all the
outputs. Turning all the way to the left feeds
that signal to the left channel only. The center
position provides even balance between both cha-
O Reverb/Echo Controls
If you wish to use either Reverb or Echo, you can
blend the effect into each channel individually with
the continuous control. The reverb effect is built
in, but echo requires a special echo unit.
Connecting the echo unit to the Echo jacks will
change the Reverb to Echo.
Tone Controls
Each channel has its own Treble and Bass tone
controls, which affect each end of the frequency
scale. Turning either knob clockwise accentuates
the tones (high or low) controlled by that knob.
Volume Controls
Each channel has its own Volume knob. Turning
the knob clockwise increases the volume.
O Input Jacks
OQ VU Meters
These meters show the volume level of the unit's
overall output signal from the Speaker jacks (i.e.
the signal controlled by the Master Volume knob);
they do not show the signal level from the Rec. Qut
jacks. If the level is so high that the needle on
either or both channels exceeds +3, sound distortion
will result.
O Graphic Equalizer
There is 7 Band Graphic Equalizer (+ 12 dB) for
each of the seven separate controls: 60, 150, 400,
1k, 2.5k, 5k and 10kHz. You can obtain optimum
frequency response in any location by adjusting
this control. If howling occurs, this control can
serve as a howling suppressor by towering the level
of selected frequencies.
© Aux. Volume Control
To adjust the volume of the signal from the Aux.
jacks going to the Speaker and Phones outputs. The
volume is independent of the other volume controls,
including Master Volume.
(D Master Reverb/Echo Control
To adjust the overall intensity of the effect.
® Monitor Volume Control
Controls the combined volume of the signals from
all the channels going to the Monitor Out output.
(P Master Volume Contro!
Used to control the combined volume of the signal
from all the channels going to the Speaker and
Phones outputs.
® Phones Jack
This stereo jack can be used for stage or other
o © ®
@ JP-20 Adaptor Plug
Male end: Telephone plug
Female end: Pin jack
Handy for connecting a pin plug to a telephone
PPJ-40 Single/Double Connector Cord
Single end: Pin plug
Double end: Pin jack & telephone jack
Length: 1.5 meters
Use to connect a pin jack to both a telephone and
a pin jack. Two connectors required for stereo.
PJJ-50 Single/Double Connector Cord
Single end: Pin plug
Double end: Telephone jacks (2)
Length: 1.5 meters
For connecting a pin jack to two telephone jacks.
PJ-30 Connector Cord
Male ends: Pin plug & telephone plug
Length: 1.5 meters
For connecting pin jack and telephone jack. Two
cords required for stereo.
PJ-35 Connector Cord
Male end: Pin plug
Female end: Telephone jack
Length: 1.5 meters
To connect a pin jack to a cord with a telephone
PJ-40 Double Connector Cord
Pin plugs (2) and telephone plugs (2)
Length: 1.5 meters
For stereo connection of pin jacks and telephone
PP-35 Double Connector Cord
Pin plugs both ends (4)
Length: 1.5 meters -
For connecting two sets of stereo pin jacks.
HP-6 Headphone Brancher
Provides six extra headphone jacks to let everybody
in the group—or a group of listeners—monitor the
© MX-4 Pre-Mixer
Four extra inputs, each with its own MIC/GUITAR/
LINE switch and volume control. Plugs into a single
YES input jack. Carries its own economical battery
75 Wrms x 2
Volume, Bass, Treble
Speaker Balance
Input Selector (Mic/Inst/Line)
Volume, Reverb/Echo
Aux. Volume, Monitor Volume
7 Band Graphic Equalizer
Power Switch
6 Input Jacks
Aux, In Jacks (L, R)
Speaker Jacks (L, R)
Monitor Qut Jacks (L, R)
Rec. Out Jacks (L, R)
To Echo Jack, From Echo Jack
VU Meters (L, R)
Headphone Jack
270W (Max)
61.5 x 18.2 x 41 cm (244 x 7%" x 16%")
18 kg (39.7 Ibs.)
Specifications subject to change without notice.
LINE —26.5dBm(0.04Vrms) 50k £2
INPUT | INST. —32.5dBm(0.02Vrms) 50k£2
MIC. —51.5dBm(2mVrms) 10k£2
AUX. —20.5dBm(0.07 Vrms) 50k£2
FROM ECHO —31.0dBm(0.02Vrms) 50k $2
REC. OUT —21.5dBm{0.06Vrms) 3kKQ
MONITOR OUT! +4dBm(1.2Vrms) 2002
TO ECHO —19.5dB m(0.08Vrms) 7kQ
312 & Printed in Japan. 2-76
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