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The Effects

61

Amp Simulator

Without distortion the electric guitar probably wouldn't have had nearly the impact it has had on 
popular music. The Axe-Fx contains multiple distortions based on emulations of various amplifiers. 
As mentioned earlier the Axe-Fx is not a modeler however these emulations provide sonic 
characteristics very similar to the amplifier they are emulating.

The Axe-Fx distortion is based on a proprietary dual-stage non-linearity generator. There are two 
basic stages: preamplifier and power amplifier. The preamplifier stage emulates the distortion 
generated by classic tube preamplifiers. The power amplifier stage emulates the type of distortion 
generated by a tube power amplifier using our proprietary Dynamic Response Technology™.

Full control over all parameters is naturally afforded allowing precise tailoring of this all-important 
block to your particular sonic tastes. Read the following carefully as the distortion block in the Axe-
Fx is very sophisticated and a complete understanding will allow you to get the most from it. Also 
it is important to understand the role of the Cabinet Simulator in the overall sound. The cabinet 
contributes to the sound of a preset at least as much the amplifier type. If you’re not getting the exact 
sound you’re looking for try a different cabinet simulation. Of course there are no “rules” so there’s 
nothing preventing you from using a 10” blues cabinet with a high-gain amp simulation. 
Experimentation can lead to some unique and useful sounds.

Parameters

GLBL - 

The Global Amplifier selector is a Fractal Audio exclusive. This unique parameter allows 

assigning up to ten “global amplifiers” that are stored in non-volatile memory. Whenever a global 
amplifier is selected the parameters for the amp block are loaded from memory. If a parameter is 
changed and the preset is then stored, the parameters are written back to memory. Any other presets 
that then use the same global amplifier will reflect those changes.

You can use this to store your most used amp types. For example, if you use, say, Plexi for most of 
your crunch rhythm presets you can select Global Amplifier 1 and then set the type to Plexi. Dial 
in your tone and save the preset. Now in any other preset you want to use those settings simply set 
the Global Amplifier to ‘1’. If you find you want a little more treble you can turn the treble up and 
all presets that use Global Amp 1 will now reflect that change. It’s like having a 10-channel MIDI 
preamp built in.

Содержание axe-fx ultra

Страница 1: ...Axe Fx Pre Amp Effects Processor User s Manual UL TRA UL TRA Firmware Rev 5 xx...

Страница 2: ...g 22 Moving Effects 23 Editing Effects 23 Effect Mixer 23 Output Mixer 25 Attaching Controllers 25 Saving Presets 25 Recalling Presets 25 The Effects 27 Noise Gate 27 Compressor 27 Gate Expander 28 Mu...

Страница 3: ...81 Controllers and Modifiers 82 Tempo 82 LFO s 83 ADSR s 83 Sequencer 84 Envelope 84 Pitch 84 External Controllers 85 Modifiers 85 Global Parameters 88 Tuner 90 Utilities 91 LCD 91 Preset 91 Status 92...

Страница 4: ...Hz 4 Keep power cord in good condition Do not kink bend or pinch If power cord becomes damaged discard and replace 5 If not using your Axe Fx Ultra for extended periods of time disconnect from AC main...

Страница 5: ...an 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 interferen...

Страница 6: ...ompetition was fierce with each manufacturer trying to one up the other by cramming more and more into their boxes Ultimately and unfortunately this has led to digital s demise As engineering gave way...

Страница 7: ...mory The UltraTM contains a large selection of effects and sub algorithms not present in the regular Axe Fx and is geared toward serious studio and live use The UltraTM is equally at home in a FOH or...

Страница 8: ...ee of flexibility that you do not get with other processors In our wah example this allows you to set the sweep range Q and other parameters Most modeling processors do not allow this level of control...

Страница 9: ...as most effects have a basic setup page allowing quick access to the most used parameters Controllability Many of the parameters in the Axe Fx are controllable in real time Both internal and external...

Страница 10: ...g algorithms Many of the algorithms in the Axe Fx replicate patterns that occur in nature this is where our company name was derived from The reverb algorithm replicates the sound of a real room the c...

Страница 11: ...m the signal path Only high quality film capacitors and precision metal film resistors are used in the signal path assuring low noise and low distortion performance These features also allow the Axe F...

Страница 12: ...is always left to right We ll cover routing in more detail later Every effect has a common input output structure The input sums the outputs of the effects that feed into the effect Each effect can ha...

Страница 13: ...Introduction 10 Figure 3 Output Mixer...

Страница 14: ...d cables mic cables The unbalanced outputs are intended for connecting to a power amp or other unbalanced equipment The GND LIFT switch lifts the shield ground on the balanced outputs If you get hum u...

Страница 15: ...ptacle Front Panel Figure 5 shows the front panel of the Axe Fx Figure 5 Front Panel 1 Status Warning Indicators These four LED s consist of EDITED Lit if the current preset has been edited reminding...

Страница 16: ...he edit pages for that effect Pressing EDIT again switches to the next effect in the grid CONTROL Pressing CONTROL brings up the menu pages for the internal controllers These are TEMPO LFO1 LFO2 ADSR1...

Страница 17: ...he levels too high may result in clipping of the attached equipment The Axe Fx is capable of delivering about 18 dBu maximum with level controls at full 6 Instr Plug your guitar into this jack This in...

Страница 18: ...mp s preamp stage In this configuration you are using the amp in the Axe Fx s effects loop As a Preamp Processor Into a Power Amp and Guitar Cabinet s In this configuration the Axe Fx is providing all...

Страница 19: ...ortion and tone shaping The output of the Axe Fx is connected to a full range sound reinforcement system Since the system is full range the Axe Fx s cabinet simulation should be active The configurati...

Страница 20: ...configures the primary input source Setting the INPUT SOURCE to ANALOG FRONT or ANALOG REAR configures the unit to slave all clocks to the internal 48 kHz word clock Setting to DIGITAL selects the DI...

Страница 21: ...copies the left data to the right channel and outputs this to both connectors MIDI Configuration The MIDI page configures the MIDI parameters and preset mapping of the Axe Fx The Axe Fx contains memor...

Страница 22: ...he navigation buttons and turn the value dial until PEDAL 2 is displayed or use the Auto Learn function Now when you attach a modifier to the Wah s CTRL knob simply select EXTRN 1 as the control sourc...

Страница 23: ...inuous pedals are normally used for real time continuous control of effect or global parameters i e volume The other types are normally used for bypass control or preset switching It is important to u...

Страница 24: ...led PRESET DECR Chooses which pedal to use to decrement the preset PRESET START END When using a footswitch to control preset increment decrement the preset recalled will range between these values wr...

Страница 25: ...et s place another effect in the block to the right of the compressor Move to that position using the navigation buttons and the using the dial wheel select CHORUS 1 Press ENTER to place the effect Ro...

Страница 26: ...Most effects have a MIX page like this The MIX page allows you to control the mix level panning and bypass mode of the effect On some effects these controls may be duplicated on other pages as they ar...

Страница 27: ...e turned on or off without changing the direct signal level For non mixable effects such as equalization Graphic EQ Wah distortion Amplifier and Cabinet Emulation the bypass mode is one of two states...

Страница 28: ...more details Saving Presets All editing in the Axe Fx modifies data in what s known as the edit buffer Upon saving the contents of the edit buffer are written to a memory location If a new preset is...

Страница 29: ...you wish to load from and the effect in that preset that you wish to load and then press ENTER The parameters of that effect will be loaded into the same effect in the edit buffer This is useful when...

Страница 30: ...ward expansion ratio For example if the threshold is set to 50 dB and the input level is 60 dB and the ratio is 2 0 the input will be attenuated by 20 dB RELEASE Release rate control Sets the rate at...

Страница 31: ...selected compression ratio abruptly at the threshold With high compression ratios a hard knee may produce undesirable artifacts In this case set the knee type to SOFT MAKEUP Makeup gain When this is o...

Страница 32: ...e rows feeding the block as the sidechain source The other settings allow isolating a single row as the sidechain input The other rows are summed as usual By using a row as the sidechain input you can...

Страница 33: ...he one in the Drive module In the 60 s guitarists began experimenting with booster pedals to increase the signal level into their amplifiers This increased the amount of distortion their amps would pr...

Страница 34: ...r with band centers at 63 125 250 500 1000 2000 4000 and 8000 Hz Each band can boost or cut up to 12 dB Simply select the desired band with navigation buttons and use the value dial to vary the gain T...

Страница 35: ...d and clipping even though the apparent volume is low Reduce the block output level if this occurs GAIN Sets the gain of the filter TYPE The first and last bands have a selectable filter type This par...

Страница 36: ...comb filters in parallel By tuning the comb filters a metallic or resonant timbre can be achieved from normally non musical signals The Resonator works best on transient signals like speech or percuss...

Страница 37: ...the resonance of the selected filter by varying the feedback FILTER LOC n Selects the position of the bandpass for the selected filter FILTER Q n Sets the Q of the selected bandpass filter LEVEL n Set...

Страница 38: ...ll be 2 Hz 120 bpm 60 seconds 2 To ignore the global tempo set the tempo control to NONE Advanced Parameters BASS Adjusts the bass response of the wet signal The bass can be boost or cut up to 12 dB T...

Страница 39: ...he depth of the secondary LFO Quad Chorus The Axe Fx UltraTM Quad Chorus is the ultimate chorus effect Four independent chorus units are modulated by four separate LFO s The result is an incredibly lu...

Страница 40: ...nimum time delay of the chorus unit LEVEL Sets the output level of the chorus unit PAN Sets the panning of the chorus unit in the stereo field DEPTH Sets the depth of the modulation applied to the cho...

Страница 41: ...me slightly out of sync and created the classic wooshing sound A great example of this is in the Doobie Brother s song Listen to the Music during the bridge Basic Parameters TIME Adjusts the nominal d...

Страница 42: ...the corner frequency of the bass control TREBLE FREQ Adjusts the corner frequency of the treble control LFO PHASE Adjusts the phase difference between the left and right lfo waveforms For maximum ster...

Страница 43: ...set the order to four and use low feedback For more pronounced effects increase the order Turning this control fully clockwise puts the Phaser into Vibe Mode where the frequency spacings are fixed In...

Страница 44: ...ame to discover the wonderful tones of the Leslie cabinet and it s brethren The classic Leslie cabinet is comprised of a spinning drum with a slot in it and a rotating horn called a rotor A low freque...

Страница 45: ...legacy but with modern reliability and control Also the unique control input processing of the Axe Fx eliminates the zipper effect common to many remotely controlled wahs A wah is actually a very stra...

Страница 46: ...ormants are resonances in instruments cabinets and in this case the human vocal tract that give sounds their character The human vocal tract generates a handful of formants that produce the vowel soun...

Страница 47: ...ession can be achieved while still rendering speech intelligible Although it never really gained acceptance for that application it later found usefulness as a means of encrypting speech for wartime c...

Страница 48: ...change the character of the vocoding and produce anonymous mob informant or chipmunk effects HPMIX Sets the amount of highpass filtered signal to mix in with the synthesis output This can be used to i...

Страница 49: ...e TEMPO Locks the rate to the global tempo For example if the global tempo is 120 bpm and the tempo is set to a quarter note 1 4 then the LFO rate will be 2 Hz 120 bpm 60 seconds 2 To ignore the globa...

Страница 50: ...left and right delay time and feedback allowing for modern stereo delay sounds The Ping Pong mode criss crosses the signal so that the echoes ping pong left and right The Dual mode allows full control...

Страница 51: ...Note that this is different than the PAN control on the MIX page which controls the panning of the mixed sound This control only effects the wet signal TEMPO Locks the time to the global tempo For exa...

Страница 52: ...o the echo like an old tube based tape delay This control has no effect when using the Reverse delay type Ping Pong Delay TIME Sets the time of the delay lines time between echoes FEEDBK Sets the amou...

Страница 53: ...choes FEEDBK Sets the amount of delay feedback This controls how many repeats are heard Use caution as instability can occur with the reverse type with certain parameter settings ECHO PAN Controls the...

Страница 54: ...onse to your playing The volume of the echoes then increases when you stop playing ATTENUATION Sets the attenuation depth of the ducker A setting of 20 dB for example will decrease the echoes by 20 dB...

Страница 55: ...layback to the beginning allowing for stutter effects STACK Pressing this adds the audio input to the existing phrase Pressing it again stops the addition The existing audio is faded every time throug...

Страница 56: ...The Effects 53 Plex Delay Plex Detune Plex Shift Band Delay...

Страница 57: ...this to vary all the frequency values in real time This can be used to achieve a wah like effect on the echoes MASTER Q Scales all the Q values Attach a controller to this to vary all the Q values in...

Страница 58: ...ing will tend to smear the echoes SHIFT Sets the amount of pitch shift for the delay line for the Plex Shift type FREQ Sets the center frequency of the delay line output filter Q Sets the Q of the del...

Страница 59: ...atio of the left delay time to the right in stereo mode PAN SHAPE Controls the shape of the panning as a function of tap number The repeats can slowly move from one side to the other increasing decrea...

Страница 60: ...ples of a sixteenth note Diffusor The Diffusor is comprised of four two second diffusers in series A diffuser smears transients and can be used as a type of reverb for creating interesting ambience ef...

Страница 61: ...p number This parameter controls the rate at which the pans change with tap number TIME RANDOMIZE Controls how much the tap spacing is randomized Reverb Aside from distortion no effect is probably mor...

Страница 62: ...The mix page is the standard mixer The advanced page allows for more in depth editing and contains all the adjustable parameters except for the mixer parameters Parameters TYPE Selects the reverb typ...

Страница 63: ...ELAY This controls the relationship between the early reflections and the reverb tail This allows a 50 change in the early reflections initial delay The size control automatically sets the time betwee...

Страница 64: ...l sound The cabinet contributes to the sound of a preset at least as much the amplifier type If you re not getting the exact sound you re looking for try a different cabinet simulation Of course there...

Страница 65: ...ry similar to the Brownface model but a little more mellow The tone stack is also slightly different giving it just a bit different voicing Class A A medium gain emulation based on an early British tu...

Страница 66: ...clean channel this type has a full tone with a gentle midrange dip The power amp is punchy and clean but can be driven into light distortion if desired Sounds best with the drive turned up fairly hig...

Страница 67: ...gain for more grind This simulation features quite a bit of high frequency emphasis along with a modified British tone stack Capable of searing rhythm and lead tones Big Hair Spandex studded wrist ban...

Страница 68: ...er the control when the bright circuit is active If the original amp did not have a treble peaker circuit the bright switch uses circuit values most suited to an amp of that type On some amps the effe...

Страница 69: ...ve new and different tones Be careful in setting the tone controls as extreme settings along with high gain can cause pickup squealing or excessive noise This is especially true with the active contro...

Страница 70: ...simulation MSTR VOL This the Master Volume is a very important control It determines the drive to the power amp simulator A higher setting increases the distortion contributed by the power amp simula...

Страница 71: ...ol also works However if you change the tone stack type to anything other than the default the frequency reading will not necessarily be correct although the control will still alter the frequency XFO...

Страница 72: ...ilable 1x6 Oval 6x9 oval like in an automobile speaker used in some early amplifiers Match this up with a Plexi model and crank out some Zep 1x8 Tweed Single 8 speaker Good match for the Blues distort...

Страница 73: ...are popular for micing guitar cabinets LINK When ON the right channel speaker and mic type change when the left channel type is changed allowing for quick evaluation of the various types You can still...

Страница 74: ...Dist A screaming distortion sound good for overdriving low gain amps Based on the legendary Japanese pedal used by many famous artists Fat Dist A thick medium gain distortion sound with a low midrang...

Страница 75: ...determine pitch from By using the internal detector the pitch block is always obtaining pitch information even when you stop playing The integrated detector may not work as well however if the data i...

Страница 76: ...Multiplies the delay values by this amount MASTER FEEDBACK Multiplies the feedback values by this amount MASTER PAN Multiplies the pan values by this amount MASTER LEVEL Multiplies the level values by...

Страница 77: ...c Set to CUSTOM to use custom scale tones see below TRACK MODE Sets mode in which the harmony will track the input SMOOTH allows the harmony note to follow bends and vibrato in the input STEPPED locks...

Страница 78: ...length For large shifts this control can help improve the quality of the shifted note Octave Divider The Octave Divider creates two new notes one and two octaves below the input This effect simulates...

Страница 79: ...again DIRECTION Sets the direction of the splice playback Try setting to REVERSE for spacey effects FEEDBACK TYPE Selects the type of feedback DUAL sends the individual voices back to their respectiv...

Страница 80: ...and resets to the beginning Attach the envelope follower controller to this to re trigger the sequence on each new note TEMPO Sets the tempo at which the sequencer steps GLIDE TIME Sets the rate at w...

Страница 81: ...he smoothest while the square and ramp types are more buzzy TRACK Selects the type of input tracking OFF allows the frequency and level to be set manually via the FREQ and LEVEL controls ENV ONLY sele...

Страница 82: ...esired enhancement and frequency response INVERT Allows inversion of the left or right channel if desired Use in conjunction with the width control to adjust frequency and apparent widening PAN Someti...

Страница 83: ...each row The Mixer allows you to fine tune levels or cross fade between effects This is especially useful for cross fading amps or delays Each gain control corresponds to a row in the routing matrix...

Страница 84: ...on is 20 dB at midscale Feedback Send Return The Feedback Send and Return blocks allow you to feedback sound from one point in the routing to any other point The Send block has no parameters while the...

Страница 85: ...meters can be set to depend on it To use the tempo controller simply set the TEMPO parameter of the effect to the desired note duration To set the Tempo either turn the knob or tap the desired tempo i...

Страница 86: ...ntrol ADSR s The Axe Fx contains two Attack Decay Sustain Release ADSR generators These can be use to generate sequences that can then be used to control parameters The graph shows the relative shape...

Страница 87: ...mple if STAGES is 3 the sequencer will step through the stages as 1 2 3 1 2 3 1 etc STAGEn Sets the value at that stage of the sequence NOTE The Sequencer features a random sequence generator When in...

Страница 88: ...ing of an effect output Often times though you will want to manipulate the data from a controller A modifier allows you to change the response of a parameter to a given controller The first step in us...

Страница 89: ...ransform The resulting curve is multiplied by this value OFFSET Sets the offset The curve is offset by this value The SCALE and OFFSET parameters allow the user to position the modifier and control th...

Страница 90: ...s response especially if the pedal s potentiometer has gotten scratchy AUTO ENG When set to ON automatically engages the target effect block when activity occurs on the connected controller This can b...

Страница 91: ...you are using the Axe Fx with a tube amp CABINET Turning the CABINET to BYPASSED bypasses the Cabinet blocks in all presets Use this when you are using the Axe Fx into an amplifier guitar cabinet setu...

Страница 92: ...om Shifter mode of the Pitch block or other non standard harmonic relationships To program a custom scale simply choose the desired location number where to store the scale parameters Up to 32 scales...

Страница 93: ...age allows you to configure the tuner and the third page allows you to enter custom tuning offsets CAL This sets the reference frequency for the tuner MUTE When set to ON this mutes the sound out of t...

Страница 94: ...your librarian device or PC be sure to name the saved data to indicate the bank in which the data originated i e BankA syx This will eliminate confusion if the need arises to restore a bank It is goo...

Страница 95: ...CPU if set to 8 voices and with controllers attached to all its parameters However it normally only uses a few percent The Axe Fx assumes the worst case and checks to see if CPU utilization is less t...

Страница 96: ...difference in sound Try placing EQ before AND after the amplifier block Subtle EQ adjustments can tighten up the sound or increase the depth The Axe Fx has a lot of EQ resources for just this reason T...

Страница 97: ...he SAG control in the Amp block to zero Since you are running into a guitar speaker or speakers turn the Cabinet Simulation off in your Axe Fx either by disabling it globally via the GLOBAL menu or by...

Страница 98: ...es or harsh chemicals as these can damage the finish of the unit If your unit is malfunctioning do not attempt to service it yourself The Axe Fx is more like a computer than a tube amp and has no user...

Страница 99: ...enters Unauthorized service repair or modification will void this warranty DISCLAIMER AND LIMITATION OF WARRANTY THE FOREGOING WARRANTY IS THE ONLY WARRANTY GIVEN BY FRACTAL AUDIO SYSTEMS AND IS IN LI...

Страница 100: ...l bandwidth Analog Outputs Connectors 1 4 phone jack unbalanced XLR balanced for main output Impedance 100 ohm Max Output Level 18 dBu Dynamic Range 105 dB Frequency Response 20 20kHz 0 3 dB Crosstalk...

Страница 101: ...88 x 305 mm Weight 10 lbs 4 5 kg Input Voltage 100 to 240 VAC 47 63 Hz universal input Power Consumption 10 W Backup Battery Life 10 years Backup Battery Type CR2450 Lithium Environmental Operating T...

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