mxr M135 Manuel utilisateur
92503001862 revC
M135 SMART GATE
Which NOISE BAND CUT setting should I use?
Each of the Smart Gate’s noise reduction settings is optimized for specific
input sources. In general, the Hiss setting works well with instruments and
input sources that boost the high frequency range, such as vocal mics,
wind instruments, keyboards, and electric bass. The Hiss setting and the
Mid setting are both effective on instruments with high gain midrange
boosting, such as distorted electric guitars and amplified harmonicas.
The Full setting is most effective when used to quiet input sources with
low-end hum and buzz problems, such as AC line noise, display noise, or
light dimmer noise. To quiet a rack of noisy effects, place the Smart Gate
last in the signal chain, just before the amplifier.
M135 SMART GATE
DESCRIPTION
• Three selectable noise
reduction ranges
• Reacts gradually to long,
sustained notes and quickly
to short, syncopated notes
• Fast attack time preserves
picking transients and
harmonic overtones
CONTROLS
HI TRIGGER RANGE switch
extends trigger range for
extremely noisy situations
TRIGGER LEVEL knob controls
sensitivity of gate threshold
(indicated by yellow GATE LED)
NOISE BAND CUT switch
selects noise reduction range
(Hiss, Mid, or Full)
FOOTSWITCH toggles effect on/
bypass (red LED indicates on)
DIRECTIONS
• Run a cable from your guitar
to the Smart Gate’s INPUT jack
and run another cable from the
Smart Gate’s OUTPUT jack to
your amplifier.
• Set the TRIGGER LEVEL knob
to fully counterclockwise and
use the NOISE BAND CUT switch
to select the noise frequency
range you want to suppress—
Hiss for highs, Mid for mids,
and Full for lows.
• Turn the effect on by depressing
the footswitch and play a note or
chord and let it ring out.
SPECIFICATIONS
Input Impedance 1 MΩ
Output Impedance 1 kΩ
Maximum Input Level +7dBV
Maximum Output Level +7dBV
Noise Floor*
Gate Closed -105 dBV
Gate Open
HISS -100 dBV
MID -100 dBV
FULL -96 dBV
Frequency Response
Gate Open +0/-1 dB, 20 Hz to 20 kHz
Gate Closed
HISS -3 dB at 1 kHz
-22 dB at 20 kHz
MID -3 dB at 500 Hz
-23 dB at 20 kHz
FULL -36 dB at 60 Hz
-22 dB at 500 Hz
-23 dB at 20 kHz
Bypass Hardwire
Current Draw 15 mA
Power Supply 9 volts DC
*A-weighted
• Rotate the TRIGGER LEVEL knob
clockwise until unwanted noise
has completely died out. The
yellow GATE LED will light up
when the gate has engaged.
• If you nd yourself in an extremely
noisy playing situation, push the
HI TRIGGER RANGE switch to
extend the range of the TRIGGER
LEVEL knob.
DUNLOP MANUFACTURING, INC.
P.O. BOX 846 BENICIA, CA 94510 U.S.A.
TEL: 1-707-745-2722 FAX: 1-707-745-2658
POWER
The MXR Smart Gate is powered
by one 9-volt battery (remove
bottom plate to install), a 9-volt
AC adapter such as the Dunlop
ECB003/ECB003E, or a DC Brick™
power supply.
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