Electro-Harmonix MOD 11 User manual

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MOD 11
Multifunction Digital Modulation
Congratulations on your purchase of the Electro-Harmonix MOD 11, the
compact digital modulation pedal that does it all. From classic modulation
sounds to retro-inspired simulations, the MOD 11 features eleven distinct
modulation effects. The MOD 11 is designed to be simple to use for those
looking for fast, plug-and-play ability, but it also features deeper
functionality for players who want more control over their modulation
effects. Tap tempo, multiple LFO shapes, envelope controls, and
momentary mode are just a few examples of deeper options available on
the MOD 11. From simple, subtle warbles to out-of-this-world special
effects, the MOD 11 has got all of your modulation needs covered.
- TABLE OF CONTENTS -
Descriptions of Modulation Types 2
Connections 3
Controls 3
Mode Button Functionality 4
Footswitch Functionality 5
Secondary Knob Functionality 7
LFO Shapes & Envelopes 11
Filter Matrix Mode 13
Summary Chart 14
FCC Compliance 15
Warranty Information 16

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- DESCRIPTIONS OF MODULATION TYPES -
TREM –A classic tremolo effect, modulating the volume of your guitar.
Extra functionality includes multiple LFO shapes plus envelope controls.
HARM –Harmonic tremolo, a lush tremolo effect found in some vintage
tube amps. Your signal is split into high and low frequency bands and
modulated between the two bands. Envelope controls available.
VIBR –A classic vibrato effect, modulating the pitch of your guitar. Extra
functionality includes multiple LFO shapes plus envelope controls.
UNI –A simulation of the swooshing Univibe®effect. A bank of
modulating filters, sounds a bit like a chorus and a bit like a phaser, but
has a character all its own. Includes “chorus” and “vibrato” modes and
added overdrive.
CHORUS –A classic warbling, doubling chorus effect like the EHX Small
Clone. Extra modes include a tri-chorus effect and a bass chorus effect.
ROTARY –A simulation of a rotary speaker cabinet. Extra functionality
includes added overdrive, plus envelope control over the rotation speed.
FLANGE –A classic swooping flanger effect, a modulated delay signal
mixed with the dry signal. Modes for both additive and subtractive flanger.
Multiple LFO shapes available, including envelope following flanger.
TZF –Through Zero Flanger, a flanger effect that crosses through the
“zero point” of the sweep, where the modulated delayed signal meets back
up with the dry signal. Modes for both additive and subtractive flanger,
plus barber-pole flanger options.
PHASE –A classic phaser effect like the EHX Small Stone. Choose from
4, 6, or 8 stage phaser. Multiple LFO shapes available, including envelope
following phaser.
PITCH –A modulated pitch shifter. Chose your main pitch shift (using the
VOLUME/COLOR knob) and modulate around that pitch. Extra functionality
includes a dry blend and stepped pitch modes.
FILT –Modulated filter effect, like those often used on classic analog
synthesizers. Choose between Low Pass, High Pass, and Band Pass filters.
Multiple LFO shapes available, including envelope triggered filter.

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- CONNECTIONS -
INPUT Jack –This ¼” jack is the audio input of the MOD 11. The input
impedance is 1M.
OUTPUT Jack –This ¼” jack is the audio output of the MOD 11. The
output impedance is 680.
TAP IN Jack –Connect an external momentary footswitch to this ¼” jack
to control the modulation speed by tapping in a tempo. The external
switch should be normally open. Upon engaging the switch, it should
create a short circuit between the Tip and Sleeve of the plug. For the
Rotary effect tapping this switch once changes the speed of the rotation.
9V Power Jack –Plug the output of the MOD 11’s supplied EHX 9.6DC
200mA AC adapter in the 9V power jack located at the top of the pedal.
The MOD 11 requires 150mA at 9VDC with a center-negative plug.
- CONTROLS -
DEPTH Knob –The exact use of this knob depends on the modulation
type you are using. For most effects it sets the depth or intensity of the
effect. For the Rotary effect it sets the balance between the rotating drum
and horn signals.
RATE Knob –Sets the modulation speed. In some mod types, turning
this knob to minimum enters Filter Matrix Mode (see page 13).
VOLUME / COLOR Knob –For the first six modulation effects, this is
simply a volume knob. For the last five it has a different use. For FLANGE,
TZF, and PHASE it sets the amount of feedback, which increases the
resonance and emphasis of the effect. For PITCH it sets the center pitch
shift that the modulation happens around. For FILT, it sets the resonance.
Modulation Type Knob –This knob is an 11-position rotary switch that
selects which of the MOD 11's modulation types is active.
MODE Button –This button cycles through the available modes of the
active modulation type. Each modulation type two or three modes which
modify the behavior of the active modulation type. See “Mode Button
Functionality on page 4 for more details.

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LED –The LED lights when the MOD 11 effect is active and shuts off when
in bypass mode. Its color and blinking pattern also indicate information
about the modulation mode, and tap tempo. See “Mode Button
Functionality” below, and “Footswitch Functionality” on page 5.
Footswitch –Press the footswitch to toggle the pedal between buffered
bypass and effect modes. When the pedal is in effect mode, the LED will
be lit. In most modulations, the footswitch can also be used for tap tempo
by tapping in quarter notes with the switch. See “Footswitch Functionality”
on page 5 for more information.
- MODE BUTTON FUNCTIONALITY -
Each modulation type on the MOD 11 has up to three unique modes of
operation. Pressing the MODE button cycles through these available
modes. The LED color –green, orange, or red –shows the current mode.
Not all modulation types have three modes. When you switch modulation
types, the MOD 11 will recall the last mode you were using in that
modulation type. Below is a description of the available modes in each
modulation type. See the chart on page 14 for a summary of these
descriptions.
TREM –The 3 modes have to do with envelope controls. In green mode
your envelope doesn’t affect anything. In orange mode it affects the rate
of modulation, by default the harder you play the faster the modulation
will occur. In red mode your envelope affects the depth of the effect, by
default the harder you play the more intense the effect is. Exactly how
these envelopes work can be changed using secondary controls, see page
7.
HARM –The 3 modes work exactly as they do in the TREM type.
VIBR –The 3 modes work exactly as they do in the TREM and HARM
types, except the default envelope setting if flipped (softer playing = faster
/ more intense effect).
UNI –There are 2 modes, “chorus” and “vibrato” (as you’d see on a classic
Univibe®). In “chorus” mode (green) the modulated signal is mixed with
your dry signal to create the swooshing effect. In “vibrato” (orange) mode
you hear just the modulated sound, which creates a unique pitch
modulation effect.

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CHORUS –Green mode is a traditional chorus. Orange mode is a tri-
chorus, three different modulations occurring at once. Red mode is a bass
chorus, in this mode low end is filtered out of the modulated signal and is
boosted in the dry signal, creating a similar effect as the x-over on the
EHX Bass Clone.
ROTARY –There are two modes, regular (green) and envelope (orange).
The envelope works exactly like the orange mode in the TREM and HARM
types
FLANGE –There are two modes, additive (green) and subtractive
(orange) flanger. The additive is a more traditional flanger sound, while
the subtractive has a more tubular and vocal sound.
TZF –The modes work identically to how they do in FLANGE mode,
additive (green) and subtractive (orange).
PHASE –There are three modes, for the number of phase stages in the
phaser algorithm. 4 (green), 6 (orange), and 8 (red). More phase stages
creates a more intense phaser effect.
PITCH –There are 2 modes, in the green mode the pitch modulation is
smooth. In the orange mode the pitch modulates in fixed pitch steps.
FILT –There are three modes, Low Pass Filter (green), High Pass Filter
(orange), and Band Pass Filter (red).
- FOOTSWITCH FUNCTIONALITY -
TAP TEMPO
For most modulation types, the quarter-note modulation speed can be set
with tap tempo. You can use either the built-in footswitch or an external
tap tempo switch connected to the TAP IN jack. Plugging in an external
footswitch, however, always disables the internal footswitch’s tap tempo
functionality. Tap twice at your desired quarter-note tempo to lock in your
tap time.
You can disable the internal footswitch’s tap tempo function. To
disable/enable internal tap tempo, unplug power from the MOD 11, press
and hold the footswitch, then plug power back in while holding the
footswitch. The LED will slowly blink five times if tap tempo is turned off
or will blink twice if tap tempo is turned on. The MOD 11 saves your tap

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tempo enable/disable setting until it is changed again, even if the pedal is
removed from power.
You can also reset the internal footswitch’s tap tempo to the factory
default setting of enabled by holding the footswitch when resetting
secondary knob settings. See step 3 in “Erasing Secondary Knob Settings”
on page 8.
ROTARY SPEED SWITCH
There is no tap tempo available for the ROTARY mod type. When an
external switch is connected to the TAP IN jack, clicking that switch will
accelerate/decelerate the rotation speed. The “fast” speed is the default
speed, set with the RATE knob. The “slow” speed is set by a secondary
knob control (see page 9). The external acceleration switch only works in
the ROTARY’s green mode.
MOMENTARY
If you are in bypass mode and you press and hold down the footswitch,
you will now be in momentary mode and the MOD 11 will re-enter bypass
upon releasing the footswitch. You can disable this option by unscrewing
the back plate of the MOD 11 and switching the internal “TAILS” switch to
off. This option is good for adding quick accenting effects on only certain
moments of your playing.

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- SECONDARY KNOB FUNCTIONALITY -
The MOD 11 allows you to take even more control over each modulation
by accessing “hidden” parameters through Secondary Knob Mode. Use the
secondary knob parameters to fine tune the exact tone you want, or push
the MOD 11 into wild, unexpected sonic territory.
Within a certain modulation type, unless otherwise specified, all secondary
controls are global between the two to three modes (green/orange/red)
of that modulation type. Unless otherwise noted, changing a secondary
control in a modulation’s green mode will also change it in its orange/red
mode, if applicable.
USING SECONDARY KNOB MODE
1. Turn the MODULATION TYPE knob to the modulation you would like
to edit. Secondary knob functions are available for every type.
2. Press and hold the MODE button for 1 second. The LED will blink in
an on-on-off pattern to indicate that the MOD 11 is now in Secondary
Knob Mode.
3. Turn the RATE or VOLUME/COLOR knobs to edit the secondary knob
function for that modulation type and its selected mode.
4. To exit Secondary Knob Mode, press and release the MODE button.
The LED will stop blinking. The modulation time and tone set by the
RATE and VOLUME/COLOR knobs before entering Secondary Knob
Mode are preserved until you repeat this process again to change
them or you erase/reset secondary knob parameters.
USING OTHER CONTROLS IN SECONDARY KNOB MODE
1. The DEPTH and MODULATION TYPE knobs always function normally
in Secondary Knob Mode.
2. When using the RATE or VOLUME/COLOR knob to set a secondary
knob function, the modulation rate and volume/color that was set by
those knobs before entering Secondary Knob Mode are preserved.
3. The footswitch functions normally in Secondary Knob Mode. If the
footswitch is used to put the MOD 11 in bypass mode, Secondary Knob
Mode will remain active, and moving the knobs will change their
secondary knob parameters. The LED will blink in a shorter version of
the Secondary Knob Mode pattern. If tap tempo mode is enabled, you
can use the footswitch to tap in a new modulation speed as usual.
4. Secondary knob settings are preserved when switching away from a
particular modulation type and are preserved when power cycling the
MOD 11. When secondary knob functions are set in one modulation

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type, they do not affect the secondary knob functions of another
modulation type.
ERASING SECONDARY KNOB SETTINGS
1. To erase the secondary knob settings of a particular modulation type,
press and hold the MODE button. Then, while holding MODE, press
and hold the footswitch for 2 seconds. The LED will blink quickly
indicating that the secondary knob settings of the current modulation
have been reset to the default factory settings.
2. To erase the secondary knob settings of every type and restore them
all to factory defaults, first unplug the MOD 11 from power. Press and
hold the MODE button. Then, while holding MODE, plug power back
in to the MOD 11. The LED will blink quickly, indicating that all
secondary knob functions have been restored to the factory default.
3. To erase the secondary knob settings of every modulation and reset
the tap tempo functionalities of the internal footswitch to the factory
default, first unplug the MOD 11 from power. Press and hold both the
MODE button and the footswitch. Then, while holding both, plug
power back in to the MOD 11. The LED will cycle through red, orange
and green to indicate that the MOD 11 has been restored to factory
default secondary knob settings, mode settings, and tap tempo
settings.
COMMON SECONDARY KNOB FUCTIONS
Many of the different modulation types have similar secondary controls:
LFO SHAPE: TREM, VIBR, FLANGE TZF, PHASE, PITCH (green mode only)
and FILT all have a secondary control to adjust the LFO Shape. This
function is assigned to the RATE knob when in secondary knob mode. For
more info on LFO Shapes, see page 11.
ENVELOPE FACTOR: TREM, HARM, VIBR, and ROTARY all have this
secondary control. This only makes a difference when in the orange or red
mode for one of these modulation types. This function is assigned to the
VOLUME/COLOR knob when in secondary knob mode. At maximum (the
default setting for all but VIBR), the envelope has its maximum effect,
playing hard will have maximum rate/depth (depending on what mode
you’re in) and soft playing will have close to zero rate/depth. As you bring
the knob down, this difference is lessened. At 50% the envelope has no
effect. As you bring it below 50%, the effect is flipped, where hard playing
results in minimum rate/depth and softer playing results in maximum
rate/depth (minimum is the default in VIBR).

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MIX: CHORUS, FLANGE, TZF, PHASE, PITCH, and FILT all have a mix
control, assigned to the VOLUME/COLOR knob when in secondary knob
mode. At maximum (the default setting for all but PITCH) you hear the
classic effect. As you bring the mix down, more dry signal is added to the
signal and the effect becomes more subtle. At minimum you will hear just
your dry signal. In the TZF type this doesn’t work when using a barber-
pole shape (see page 12)
OVERDRIVE: UNI and ROTARY have an overdrive control, assigned to the
RATE knob in secondary knob mode. By default there is no overdrive, bring
this control up to add more overdrive. The exact sound/performance of
this will depend on the level of your input signal.
SECONDARY KNOB FUNCTIONS BY MODULATION TYPE
Below is a chart of the secondary knob functions for each modulation type.
After is a description of the handful of secondary functions not mentioned
in the common secondary knob functions section on the previous page.
TYPE
RATE
VOLUME/COLOR
TREM
LFO Shape
Envelope Factor
HARM
Crossover
Envelope Factor
VIBR
LFO Shape
Envelope Factor
UNI
Overdrive
--
CHORUS
--
Mix
ROTARY
Overdrive
Slow Speed/Env Factor
FLANGE
LFO Shape
Mix
TZF
LFO Shape
Mix
PHASE
LFO Shape
Mix
PITCH
LFO Shape/Scales
Mix
FILT
LFO Shape
Mix
CROSSOVER: In the HARM type, this sets the crossover frequency
between the high frequency and low frequency bands that are being
modulated between. By default it’s set towards the center of the knob,
about 550Hz.
SLOW SPEED: In the ROTARY type, in orange mode the VOLUME/COLOR
knob sets the Envelope Factor (see page 8), but in green mode it sets the
“slow speed.” When using an external switch plugged into the TAP IN jack
in this modulation type, tapping on the footswitch accelerates/decelerates
between fast and slow modulation speeds. The fast speed is the default,
set by the RATE knob. In secondary knob mode the VOLUME/COLOR knob

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sets the slow speed as a ratio. At maximum, it’s a 1:1 ratio and the slow
speed will be the same at the fast speed. At 50% the slow speed is half
the speed of the fast speed. At minimum the slow speed won’t be
modulating at all.
SCALES: In the PITCH type, in orange mode the pitch modulation is locked
to specific note intervals. By default it’s chromatic, but this “scales” control
can set it to different pitch intervals. The other options are whole tone
scale, octaves, octaves & fifths, major arpeggio, and minor arpeggio. The
nature of the LFO and different pitch intervals can lead to some wacky
rhythmic effects. In secondary control mode, the RATE knob sets this
effect, based on divisions shown below:

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–LFO SHAPES & ENVELOPES –
Different LFO (low frequency oscillator) shapes dramatically change the
feel and sound of a given modulation. In TREM, VIBR, FLANGE, TZF,
PHASE, and FILT types, you can adjust the LFO shape with a secondary
control (turning the RATE knob when in secondary mode, see page 7). In
FLANGE, PHASE, and FILT types, you can also set this “LFO shape” to your
playing envelope, where the sound of the effect will be directly related to
the volume of the input signal at a given moment.
SHAPES
Sine: A sine wave LFO is the most common
LFO shape and the default in every mod type
in the MOD 11. The modulated parameter
smoothly moves between its minimum and
maximum in a fluid, seamless way.
Triangle: An extra option just in the TREM
type, the triangle wave is very similar to the
sine, but with a slightly different feel as the
parameter change is more linear.
Rising Sawtooth: The modulated parameter
smoothly rises from its minimum to its
maximum, before sharply resetting at its
minimum. Can be used to create reverse or
side-chain like effects.
Falling Sawtooth: The opposite of the rising
sawtooth, the modulated parameter
smoothly falls from maximum to minimum,
before sharply resetting at its maximum.
Can be used for rhythmic effects.
Square: The modulated parameter jumps
directly between minimum and maximum,
with no smooth transitions. Can be used to
create choppy or robotic effects.

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TZF Shapes –Barber Pole
In the TZF (through-zero-flanger) type, the default LFO shape is the sine
wave like in all other modulation types. The two other options are what
are known as barber poles. These are similar to the rising/falling
sawtooth, but instead of a hard reset at the minimum/maximum, the
LFO is done in a way where it sounds like it is going in a certain direction
forever.
ENVELOPES
In FLANGE, PHASE, and FILT types, you can set the LFO shape to be a
positive or negative envelope. When set to a positive envelope,
harder/louder playing will result in the modulated parameter being
higher, and softer/quieter playing will result in the modulated parameter
being lower. When set to a negative envelope, the opposite occurs.
When set to an envelope, the RATE knob (not in secondary mode) sets
how quickly the envelope responds to your playing.
SELECTING LFO SHAPE / ENVELOPES
For the six mod types that can use different LFO shapes, the shape is
selected with the RATE knob while in secondary control mode (see page
7). Below are diagrams of where on the knob you can select each shape
for each of the six mod types:
TREM VIBR & PITCH

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FLANGE TZF
PHASE & FILT
–FILTER MATRIX MODE –
In FLANGE, TZF, PHASE, and FILT types, you can enter “filter matrix
mode” by bringing the RATE knob all the way to minimum. At this point,
all modulation will stop, and you can set the exact placement of the “filter”
(in the case of FLANGE and TZF, technically delay) with the DEPTH knob.

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–SUMMARY CHART –
Below is a brief chart showing, for each modulation type, what the
VOLUME/COLOR knob controls, the difference between the green,
orange, and red modes (more info on page 4), and the secondary
controls for the RATE and VOLUME/COLOR knobs (more info on page 7).
Type
VOL/COL
Green
Orange
Red
2nd Rate
2nd V/C
TREM
Volume
No Env
Env Rate
Env
Depth
LFO
Shape
Env Factor
HARM
Volume
No Env
Env Rate
Env
Depth
Crossover
Env Factor
VIBR
Volume
No Env
Env Rate
Env
Depth
LFO
Shape
Env Factor
UNI
Volume
Chorus
Vibrato
--
Overdrive
--
CHORUS
Volume
Regular
Tri-Chorus
Bass
Chorus
--
Mix
ROTARY
Volume
No Env
Env Rate
--
Overdrive
Slow
Speed/Env
Factor
FLANGE
Feedback
Additive
Subtractive
--
LFO
Shape
Mix
TZF
Feedback
Additive
Subtractive
--
LFO
Shape
Mix
PHASE
Feedback
4 Stage
6 Stage
8 Stage
LFO
Shape
Mix
PITCH
Center
Pitch
Smooth
Mod
Stepped
Mod
--
LFO
Shape/
Scales
Mix
FILT
Resonance
LPF
HPF
BPF
LFO
Shape
Mix

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–FCC COMPLIANCE –
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in
a particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Modifications not expressly approved by the manufacturer could void the user's authority to operate the
equipment under FCC rules.

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- WARRANTY INFORMATION -
Please register online at http://www.ehx.com/product-registration or
complete and return the enclosed warranty card within 10 days of
purchase. Electro-Harmonix will repair or replace, at its discretion, a
product that fails to operate due to defects in materials or workmanship
for a period of one year from date of purchase. This applies only to original
purchasers who have bought their product from an authorized Electro-
Harmonix retailer. Repaired or replaced units will then be warranted for
the unexpired portion of the original warranty term.
If you should need to return your unit for service within the warranty
period, please contact the appropriate office listed below. Customers
outside the regions listed below, please contact EHX Customer Service for
information on warranty repairs at [email protected] or [phone].
USA and Canadian customers: please obtain a Return Authorization
Number (RA#) from EHX Customer Service before returning your
product. Include  with your returned unit  a written description of the
problem as well as your name, address, telephone number, e-mail
address, RA# and a copy of your receipt clearly showing the purchase
date.
United States and Canada
EHX CUSTOMER SERVICE
ELECTRO-HARMONIX
c/o NEW SENSOR CORP.
55-01 2ND STREET
LONG ISLAND CITY, NY
11101
Tel: [phone]
Email: [email protected]
Europe
JOHN WILLIAMS
ELECTRO-HARMONIX UK
13 CWMDONKIN TERRACE
SWANSEA SA2 0RQ
UNITED KINGDOM
Tel: [phone]
Email:
[email protected]
To hear demos on all EHX pedals visit us on the web at www.ehx.com
Email us at [email protected]m