Rear Panel; Power Input - Evh 5150 III EL34 Manual De Instrucciones

L. POWER INPUT: Connect the included power cord to the
amplifier here, in accordance with the voltage and fre-
quency ratings listed on the rear panel of the amplifier.
M. FUSE: Replace only with a fuse of the same rating.
N. POWER: Turns the amp on and off. After turning this
switch to ON, wait 30 seconds for the tubes to warm
up, then turn the STANDBY switch (O) to ON to take the
amp out of STANDBY mode. When turning the ampli-
fier off, place the amp in STANDBY mode by turning the
STANDBY switch to OFF for 10 seconds before turning
the POWER switch to OFF.
O. STANDBY: Place this switch in the OFF position to put
the amp in STANDBY mode. This should be done when
taking a break from playing or before turning the ampli-
fier off (as described above in item "N"). Using STANDBY
mode prolongs tube life.
P. HEADPHONES: Connect headphones here (automati-
cally mutes speaker output).
Q. MIDI IN: Connect a MIDI controller here to enable MIDI-
commanded channel selection and effects loop bypass
(see "MIDI Setup and Use" section on following page).
R. FOOTSWITCH: Connect the included footswitch (see
illustration below) here. The footswitch enables easy
selection of each of the three channels and the effects
loop. The green, blue and red footswitch LEDs cor-
respond to the channel LEDs on the amp front panel.
Purple LED at far right illuminates when effects loop is
active.
ONE TWO

REAR PANEL

THREE EFFECTS
S. EFFECTS LOOP: Connect SEND to an external effect
input; connect RETURN to external effect output.
T. PREAMP OUT: Connect to another amp's effects return
or power amp input for simultaneous multiple amp use.
This output can also be used to send the preamp signal
directly to a mixer.
U. RESONANCE: Adjusts power amp low-frequency
response.
V. LOAD IMPEDANCE: Selects amp output impedance of
(4, 8 or 16 ohms) to match speaker load.
NOTE: The 5150III 212ST EL34 speaker enclosure (recom-
mended) has an impedance of 16 ohms. When using the
5150III 212ST EL34 speaker enclosure, set LOAD IMPEDANCE
switch to "16Ω."
W. SPEAKER OUTPUTS: For connection to speaker cabinet(s).
Either jack can be used when using only one speaker cabi-
net. Five different speaker configurations are listed below.
Use only high-quality unshielded speaker cables.
NOTE: A speaker must always be plugged into one of the
speaker jacks when the amplifier is on, or damage may
occur. Turn the amplifier off or put it in STANDBY mode
when changing speaker connections or impedance settings.
SPEAKER CONFIGURATIONS
SPEAKER
JACK
16Ω +
16Ω +
8Ω +
8Ω +
4Ω +
SPEAKER IMPEDANCE
JACK SETTING
NONE = 16Ω
16Ω = 8Ω
NONE = 8Ω
8Ω = 4Ω
NONE = 4Ω
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