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Guitar players will always be drawn to the tone and feel of analog effects. All of the 
"flaws" that come with sending a guitar signal through an analog circuit add up to a 
rich and familiar tone. Digital effects convert the signal to digital data and process it 
with exacting algorithms. This works for some effects, but distortion is different. Guitar 
distortion is not hi-fi, but a mix of non-linear amplification, clipping, and intermodula-
tion that makes for a complex, harmonically rich tone.

Kismet’s Solution  

We first designed a great distortion pedal and then added a digital 

microcontroller that is able to change the internal resistances in Kismet’s analog circuit 
based on knob positions, presets, expression control, or MIDI commands.

Analog Distortion  

Kismet’s audio path is 100% analog. At lower gain, one set of 

diodes produces a touch sensitive overdrive. As gain increases, a second set of diodes 
begins clipping for higher gain with just the right amount of compression. Progressively 
sculpting the distortion this way gives Kismet a wide and musical gain range.

Preset Memory 

 Kismet can save all knob settings to each of its four memory positions. 

A footswitch or toggle switch can cycle through all of the presets or toggle back and 
forth between any two.

Expression Control  

Control any or all settings, in any amounts, any directions, all at 

the same time. Save one set of knob positions for the “heel,” another for the “toe,” and 
Kismet will mix and morph all settings at the same time with the expression pedal.

MIDI Control 

 Expand Kismet’s memory to 

                      

 that can be any combination 

of preset or expression settings. Take continuous control of any settings, and more.

INTRODUCTION

INTRODUCTION

CONNECTIONS

CONNECTIONS

INPUT

1/4” TS (TIP, SLEEVE) mono cable. Input impedance is approximately 1 M   .

OUTPUT

1/4” TS mono instrument cable. Output impedance is approximately 1k   .

EXPRESSION

1/4” TRS (TIP, RING, SLEEVE) stereo jack. Most expression or volume pedals can be 
used. Refer to Fig. 7 for proper wiring and Fig. 11 for calibration.

MIDI

Non-standard 3.5mm TRS connector (Page 19).

REQUIRED: 2.1mm, center negative polarity. This is 
the most common effect pedal power connection.

5.5mm outer diameter

2.1mm inner diameter

Fig. 1

  

DC power connection.

1

2

 

9

 

VDC

60

 

mA

(minimum)

(maximum)

DC POWER INPUT

i

INPUT is for Instrument-level voltages only. Kismet is 
not intended for use in an amplifier’s effects loop.

Summary of Contents for KISMET

Page 1: ... U S E R G U I D E A n a l o g T o n e D i g i t a l F u n R a m b l e F X p r e s e n t s ...

Page 2: ...g a MIDI Controller 19 Setting Kismet s MIDI Channel 20 Controlling Kismet with MIDI 21 Saving with MIDI 22 Operation 24 Specifications 25 Policies 26 CONTENTS CONTENTS Congradulations You are in possession of an exciting distortion pedal that gives you the ultimate in creative control over your tone Thank you for supporting Ramble FX Ramble FX is a small company that makes original effect pedals ...

Page 3: ... can save all knob settings to each of its four memory positions A footswitch or toggle switch can cycle through all of the presets or toggle back and forth between any two Expression Control Control any or all settings in any amounts any directions all at the same time Save one set of knob positions for the heel another for the toe and Kismet will mix and morph all settings at the same time with ...

Page 4: ...e Tap left or right to change memory positions Hold to the left to begin a preset memory save hold to the right to begin an expression save This LED is ON when the internal settings match the physical knob positions Set this to match the taper of the expression pedal or to the position that creates the best sweep from heel to toe page15 MIDI input Page 19 4 Relay based true bypass switching Solid ...

Page 5: ...obs match the internal settings MEMORY INDICATION The status of Kismet s internal settings can always be determined by the four bottom LEDs and the LIVE SETTINGS LED For preset memories the LEDs appear as seen in Figure 3 The LIVE SETTINGS LED is lit when all five knob positions match the internal settings When Kismet is bypassed the status LEDs will dim but remain on Be aware that when Kismet is ...

Page 6: ... CHANGE PRESETS 1 The center toggle switch will advance to the next memory position every time it is tapped to the right or to the previous memory position every time it is tapped to the left The left toggle switch TOGGLE CYCLE sets the function of the left footswitch TOGGLE CYCLE 2 Set to CYCLE the footswitch will advance to the next memory position every time 3 Set to TOGGLE the footswitch will ...

Page 7: ...hat can be used 1 Expression pedal below 2 Volume pedal Page 12 3 Control voltage CV source Page 13 do not attempt without reading first 1 EXPRESSION PEDAL An expression pedal is a foot controlled potentiometer with only one stereo jack A single cable contains both the input and the output wires A fixed voltage enters on one wire and a fraction of that voltage is sent back on a separate wire The t...

Page 8: ...mpatible with a polarity reversing adapter available at www ramblefx com polarity adapter Required polarity tip to wiper POTENTIOMETER Fig 7 Expression pedal connection showing tip to wiper polarity From Kismet expression jack DC INPUT 2 VOLUME PEDAL A volume pedal is a foot controlled potentiometer with separate input and output connections A voltage enters one jack and a fraction of that voltage...

Page 9: ...ire calibration Page 17 3 CONTROL VOLTAGE CV SOURCE Must follow full instructions at www ramblefx com Kismet can accept certain devices that provide a control voltage This is beyond the scope of this User Guide Not all devices are compatible Refer to manufacturer s specifications when determin ing compatibility Voltages over 5V can cause damage FINISH SAVE REPEAT if needed 2 Fig 9 Setting expressi...

Page 10: ... Live Settings or even when it s currently in expression mode Because of that the knob positions may not match the actual internal settings It is the actual settings that are saved i e what you hear is what you save Expression settings are saved to EEPROM memory and are not lost when power is disconnected sweep they are always the same e g an output of 50 when the pedal is rocked halfway Log or au...

Page 11: ...atible and incorrect connections or voltages can cause damage not covered by Warranty Instructions are available at www ramblefx com or contact support ramblefx com CALIBRATING AN EXPRESSION PEDAL If an expression pedal cannot turn ON expression control Fig 10 it may need to be calibrated This is usually the result of a pedal not reaching its full 0 100 output Calibration will restore the full exp...

Page 12: ...rom Ramble FX at www ramblefx com midi adapter 2 CUSTOM CABLE availability unknown Fig 12 Correct wiring for a custom Kismet MIDI cable Pin 5 Data current sink Ring Pin 2 Shield Sleeve Pin 4 5V current source Tip MIDI MALE 3 5mm TRS MALE 1 2 3 5 4 3 5mm TRS plug male SET AND SAVE AUTOMATICALLY After entering MIDI channel setting mode Fig 13 send Kismet any message on the desired channel using an a...

Page 13: ...r to page 23 Two messages are sent one with a value that identifies the function and one that sets that function to a certain setting The setting values are 0 min to 127 max The save procedure for the expanded MIDI positions is almost identical to the normal non MIDI positions Fig 4 except the memory position is set with an attached MIDI controller using a Program Change message SAVING PRESETS WIT...

Page 14: ...oesn t work make sure that the controller being used is sending MIDI compliant Program Change or Control Change messages See midi org for info OPERATION OPERATION 24 PROGRAM CHANGE PC VALUES PC VALUE FUNCTION 0 Live Settings 1 2 3 4 Presets only 1 2 3 4 These are the same 4 memory positions that can be saved and recalled without MIDI 5 Expression settings only This is the single expression setting...

Page 15: ...s responsibility is limited to the value of the product itself Ramble FX assumes no responsibility for any indirect costs or losses however incurred RETURN POLICY If this product was purchased directly from Ramble FX the original owner may return it within two weeks of receiving it for a full refund minus all shipping costs It must be returned in new condition and the buyer is responsible for retu...

Page 16: ... 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 partic...

Page 17: ...uide is available at www ramblefx com Ramble FX and Kismet are trademarks of Ramble FX LLC Line 6 is a trademark of Line 6 Inc Hosa is a trademark of Hosa Technology Inc All other trademarks are property of their respecctive owners Designed and assembled in the USA visit www ramblefx com contact contact ramblefx com support ramblefx com social ...

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