Alesis COOLFIRE User Manual

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Quick Start Owner’s Manual

Box Contents:

Coolfire Guitar Amplifier

User Manual

Important Safety Instructions

Manual de inicio rápido para el usuario (Spanish)

Contenido de la caja:

Amplificador de guitarra Coolfire

Manual de usuario

Instrucciones de seguridad importantes

Guide d’installation rapide (Français)

Contenue de la boîte :

Amplificateur de guitare Coolfire

Guide de l’utilisateur

Consignes de sécurité importantes

Schnelles Hinweisbuch (Deutsch)


Coolfire Gitarrenverstärker


Wichtige Sicherheitshinweise

Manuale rapido di utilizzazione (Italiano)

Contenuto della Confezione:

Amplificatore Chitarra Coolfire

Manuale d’Uso

Importanti Istruzioni di Sicurezza

This page intentionally left blank.

Quick Start Owner's Manual (English)

Quick Setup for the Coolfire

yMake sure all items listed on the front of this guide are in the Coolfire's box.

yRead the Important Safety Instructions document included with the Coolfire.

yStudy the Hookup Diagram below.

yMake sure all equipment is turned off and all gain knobs are set to zero.

yConnect your guitar and other equipment to the Coolfire in the manner illustrated below.

yPlug in all devices and turn them on.

yExperiment with the Coolfire's effect combinations.

yWhen finished, turn off the amp before disconnecting any equipment to prevent damage to the speaker.

yGo to to register the Coolfire.


Front panel operation

1.Input – Plug your guitar into this 1/4" unbalanced input using a TS cable.

2.Program Up/Down Buttons – Change the program number with these buttons. When pressed together, they put the unit into both Bypass and Mute modes and access the tuner.

3.Display – indicates bank and program, shows parameter values, and displays the pitch in tuner mode.

4.EFFECT Knob – puts the Coolfire in PLAY mode or EDIT mode. You are in EDIT mode when this knob is set to anything other than PLAY.

5.VALUE Knob – adjusts parameter values and program numbers; stores changes.

6.MASTER VOLUME Knob – controls the volume of the signal sent to the speaker, headphones, STEREO LINK OUTPUT and SPEAKER OUTPUT.

7.HEADPHONES Jack – Plug in your headphones using a 1/4" stereo plug.

8.Power Switch – turns the Coolfire on and off.

Rear panel operation

1.Fuse – Replaceable fuse. See the rear panel of the Coolfire for details.

2.Power Cord – Plug this cord into a proper AC outlet. See the rear panel for details.

3.FOOTSWITCH UP/DOWN INPUT – Plug footswitches into these 1/4" jacks. Footswitches serve the same functions as the Program Up and Down buttons.

4.EXPRESSION PEDAL INPUT – Plug an expression pedal into this 1/4" jack for easy control over EFFECT parameters.

5.AUX INPUT – Plug a CD player or other audio device into these RCA jacks and play along!

6.STEREO LINK OUTPUT – Use a 1/4" TS cable to connect this jack to the input of another amplifier for true stereo. The Coolfire provides true stereo output instead of the standard mono; many of the Coolfire’s excellent effects will sound even better when you listen to them in stereo. If you don’t have a second amplifier, you can enjoy the stereo effects by listening with headphones.

7.SPEAKER OUTPUT – Use a 1/4" TS cable to connect this jack to an external8-ohmspeaker. Doing so disconnects the internal speaker.


Exploring the Coolfire’s effects

The Coolfire isn’t just a great sounding acoustic guitar amplifier. It also contains an advanced, stereo effects processor dedicated exclusively to enhancing the sound of acoustic guitars. Compression, tailored EQ curves, choruses, reverbs, and much more allow you to enhance your acoustic guitar’s sound in a variety of traditional and unconventional ways.

Begin by exploring the Coolfire’s default programs. Turn the Effect knob all the way to the left to selectPlay. Now, play your guitar and explore the programs by pressing theProgram Up andProgram Down buttons, twisting theValue knob, or by using optional footswitches attached to the rear of the unit.

You’ll hear programs ranging from ultra-cleanto rocking to washy. If you have the chance, be sure to plug a pair of stereo headphones into the back of the Coolfire to experience these effects in stereo. Some of the effects – good as they are coming out of the Coolfire’s internal speakers – really come alive in stereo.

Modifying the effects programs

There’s a lot more to the Coolfire’s effects than just what’s in the presets. The Coolfire has eight separate effect modules, as shown below:

These effects are accessed using the EFFECT knob on the front of the Coolfire.

Move the EFFECT knob clockwise out of thePlay position in order to edit the effects. Once you change an effect, theEDITED LED on the bottom right of the display will light. From left to right, here are your options:



In this setting, the display shows you the current program number. This is the mode you should choose for typical live performances, as it allows you to switch programs easily via the foot pedals.

Indicates the bank letter and program number of the current program.

COMP/LIMIT (Compressor/Limiter)

Compression. Adds sustain and smoothness by lowering the dynamic range.

Limiting. Retains the original volume, but smoothes out the loudest peaks.

Off. Turns COMP/LIMIT off.

TYPE (guitar modeling)









The clean, natural sound of a quality acoustic guitar.
















A dark, deep sound typical of guitars made of dense rosewood or






































Accentuates the higher frequencies for a crisp sound usually found
















in acoustics with smaller bodies.















A full, warm sound that’s great for strumming rhythm parts.
















Provides a little more low-endfor that sound associated with
























Adds a crunch to your acoustic sound, as if you’re playing through









a tube amplifier and pushing the gain. Higher values mean more

















Turns off DIST.











EQ (Equalizer)

This module provides you with a high-passfilter and four bands of equalization that you can use to shape the sound of your audio signal by cutting and boosting certain frequencies.

HPF (High-PassFilter)

Turns on the high-passfilter, which reduces very low frequencies (below 80 Hz). Useful for getting rid of noise caused by air conditioners, passing cars or other lowfrequency rumble (great if you’re recording at home).

Turns off the high-passfilter.


Boosts or cuts frequencies below 150 Hz in 1 dB steps from -12dBto +12dB.

Turns off the LOW EQ band.


Boosts or cuts the 700 Hz range in 1 dB steps from -12dBto +12dB.

Turns off the LO MID EQ band.


This band is a parametric band at 2.5kHz with a Q of 1.5.

Boosts or cuts the 2.5 kHz range in 1 dB steps from -12dBto +12dB.

Turns off the HI MID EQ band.


Boosts or cuts all frequencies above 5 kHz in 1 dB steps from -12dBto +12dB.

Turns off the HIGH EQ band.


This is a filtered limiter that gives your acoustic guitar a bright, edgy sound. This effect works by taking the original signal, filtering out all frequencies that fall below 2kHz, feeding that into a limiter and then mixing it back with the original, unfiltered, unlimited sound.

Increasing amounts of edge.

Turns off EDGE.


The hum canceller eliminates unwanted low-endhum by eliminating the frequency that contains the hum (60Hz). Unlike thehigh-passfilter, this mode allows you to control how much noise you want to eliminate.

Increasing levels of hum elimination (60Hz harmonic notch filters).

Turns off the hum canceller.



The noise gate eliminates unwanted noise by gating the signal, which means that it mutes the signal until the signal’s level rises above a certain point.

Increasing levels of gate threshold.

Turns off the noise gate.

FX1 (Multi-EffectModule 1: Stereo Effects)

NOTE: For all of these programs, choosing0 indicates the most subtle option, choosing9 indicates the least subtle option, and — where relevant — choosingP lets you control the effect with an optional external expression pedal attached to the back of the Coolfire.

Display Description









Chorus. Adds fullness to your sound.


























Phaser. Higher values result in more feedback.







































Flanger. Shifts the pitch of the signal up and down, creating a swirling effect.











































Tremolo. Higher values result in greater depth.













































12-StrinG. Emulates the crisp, full sound of a12-stringguitar by creating the















impression that your guitar has six additional strings that are tuned an octave

















higher than the original six.

Slow Attack. Reduces the attack rate of the signal.









Random Sample and Hold Step Filter.Filters the signal with a cutoff








frequency that changes to a new random value at fixed time intervals, producing



















an arpeggiator-likesound.
























Auto Wah. U1 – U4 sweep up; U5 – U9 sweep down.





















































Rotary Speaker (L). Emulates the sound of the classic rotary speaker.














































Cry. Adds ahuman-likecrying effect to the sound.






















Off. Indicates that FX1 is off.


FX2 (Multi-EffectModule 2: Delay/Reverb Effects)

NOTE: As with the FX1 module, choosing0 indicates the most subtle option, choosing9 indicates the least subtle option, and — where relevant — choosingP lets you control the effect with an optional external expression pedal attached to the back of the Coolfire.








Hall Reverb. Simulates the reverberation of a concert hall.























Room Reverb. Simulates the reverberation of a regular room.



































Plate Reverb. Simulates the classic “plate reverb” sound of a vibrating metal









































Reverse Reverb (u). Creates abackwards-playingreverb that you hear













immediately before you hear the original signal, instead of after it.





























Doubling. Doubles the signal with a slight delay.




































Stereo Delay. A standard delay that occurs in stereo.




































Ping PonG Delay. Creates a delay that bounces back and forth in stereo.




































Tape Delay. Emulates the retrotape-delayeffect.




































Echo. The classic echo effect.





















Off. Indicates that FX2 is off.



Level. Indicates the program output level in 2dB steps, where 25 is unity gain.



Storing effects programs

After you’ve created a configuration that you like, you can store it for future recall. To store your changes, press the VALUE knob and then turn the knob to select a store location. Press theVALUE knob again to store the program.

Copying effects programs from one location to another

Copying programs is easy. Just call up the program that you want to copy. Then, press the VALUE knob, twist it until you find the location where you want to store your copy, and pressVALUE again to store the program in its new location.

Restoring factory defaults for the effect settings

Once you have saved changes to a preset program, you can still recall the original settings. To enter the RESTORE FACTORY PRESETS mode, simply hold down the VALUE knob as you turn the unit on and then select the program to be restored (or AL for all programs). Press theVALUE knob to confirm your selection. The display will blink rapidly several times to indicate the restore was successful. Any program changes you have made will be lost, so you might want to copy the program to another location first.

To exit the RESTORE FACTORY PRESETS mode, just turn the EFFECTS knob. You can also turn the Coolfire off and then on again, without holding down any knobs or buttons, to exit the RESTORE FACTORY PRESETS mode.

Deferred program change

In normal operation, the Coolfire switches immediately to the program you select. However, in some situations — especially when playing live — you may want the ability to scroll through program numbers while remaining in the current program setting. For example, if you’ve got a clean and chorusy rhythm sound stored in program A3, and you want to switch next to a bright lead sound stored in program C5, you don’t want to have to hear all the programs in between. In these cases, use the Coolfire’s Deferred Program Change mode.

While turning on the Coolfire, hold down either one of the Program Up orProgram Down buttons. Letters will scroll by on the display, spelling the word “deferred.”

In this mode, you can scroll through program numbers without having the program change each time. When you arrive at a program you want to use, press the Program Up andProgram Down buttons or both pedals at the same time in order to switch to that program.

To exit Deferred Program Change mode, turn the Coolfire off, and then turn it back on again without holding down any buttons.