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Alesis 2 User Manual
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Alesis 2 User Manual

Micro series
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Download this manual See also: Reference Manual, Instruction Manual
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MICRO SERIES
USER'S GUIDE
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Summary of Contents for Alesis 2

  • Page 1 ALES'S MICRO SERIES USER'S GUIDE FEATURING NN,trEi,||/I'EE/R'IJ a J a a - a ^rr,trDl'ltt t;rrrlF'D.@ aJaa-a -ltaaa a -! A'i',,!E,'|)'F,frJE' tlltlt aJaaata ft'r|'t'l)Ecl aJaa-a ^,I,^Ef)El'/l'AIIAED@ aJaa-a tv-taa all' !v-t rt'r|l'if1),trrrE ,.',tD a J a a - r a G . t J a . v t t -...
  • Page 2 M I C R O E N H A N C E R P a n O M I CR O CU E A M P . T o g e r h e r r h e y represent the culmination of years of research by Alesis to refine t h e mo s t m u s i ca l f u n ct i o n s o f t h e si x mo s t e s s e n t ia l m u si c production tools into a powerful, integrated system.
  • Page 3 Next time you listen to a great recording, you will very likely be hearing the Alesis MICRO SERIES in use. Certainly you should be using all six MICRO SERIES products in your studio and in your next live performance.
  • Page 4 ACKNOWLEDGETAENTS FOR lr,ilCRO EA p.37-/o Reproduced whh permission ol the publisher, Howard W. Sams and Co. Modern Recording Technioues by Robert E. Runstein copyright 1974. Reprinted with pemission from the NovemberDecember issue of Recording Engineer/Pmducer. @yright 1 972, Intertec Publishing Corporalion, Ovedand Park, Kansas.
  • Page 5 TABLE OF CONTENTS...

  • Page 6: Installation

    MICRO SERIES units, it is recommended that they be connected to a mixing console first and then connected to the MfCRO SERIES as described in Figures 2 or 3 for quietest operation. Of the MICRO SERIES units that are stereo, such as the...
  • Page 7 CONSOLE VIA AUX SENDS r r y 1 6 2 2 m A U X S E N D 2 L E F T I N P U T RIGHT INPUT M I C R O S E R I E S...
  • Page 8 INSTALLATION contd The recommended method of interfacing for the MIGRO LlMlrER, MlcRo EQ, or MlcRo GATE is to connect the unit directly to the insert send and receive patch points of the channel that is to be effected. This method will work for the MlcRo ENHANCER and MICROVERB ll as well, but keep in mind that only one instrument (in mono or stereo) at a time will be effected.
  • Page 9 The MICRO EQ can also be connected this way but 2 units must be used since it is a mono unit. MIGRO CUE AMP(s) can be connected in this manner as well to expand your headphone monitori ng capabilities.
  • Page 10 INSTALLATION cont'd Mounting All of the units in the Alesis MICRO SERIES are rack-mountable in the Micro Rack Adapter, where any three units fit perfectly. Assembly is quick and simple with a single screw securing each device in place. The unique design of the MICRO SERIES case allows the devices to lock together to form a solid rack package, or to stand alone as single units.
  • Page 11 . T h e 1 6 programs in MICROVERB ll are the result of years of exhaustive research by Alesis into the phenomenon of sound as it occurs naturally in space. From small, intimate room settings to large...
  • Page 12 When the indicator glows red, the MICROVERB ll is being TEDIUU3 MEDIUMROOM TEDIUT' MEDIUM PLATEi STRONG IMMEDIATE ATTACK TEDIUT5 MEDIUM/LARGE ROOM T€OIUX 6 MEDIUM PLATE/SOFTER DELAYED ATTACK LANGE 1 LOW DIFFUSION VOCAI ROOM LARGE2 MEDIUM/LARGE ROOM LARGE3 LARGE ROOM LANGE4 ENDLESSSPACE GATE.I POWERGATE GAT€2 BRIGHTGATE...
  • Page 13 1. Apply a signal to either the left input jack for mono (used with a single instrument), or both left and right jacks for stereo. 2. Increase the Input control until the ReC LED briefly lights on occasional program peaks. The LED should remain most of the time.
  • Page 14 ..M E D I U M 4 O R L A R G E 1 MEDIUMs LARGE 1 SMALLlor2 . A R G E 2 LARGE 1 LARGEl OR MEDIUM 2 S M A L L 2...
  • Page 15 Rcldrlr dcFr otttp Soundd{p(afurcdon Thewithof €dlHod<rcprcen0stplefr btit*sbr€oi.ttEFg.Thefiontbbad( dimersirn d each blod( represents fre rclalirre serce cf deptt ct€aied by €a.tl I.-,' HHT3ffiffiS'#ffi.ffi'ffiffi Mtffi I.IIfiNTil nh reUo ild d.ill dwcudy mbqwtidrbdePedentmthe ot ltvub pogrrn}...
  • Page 16 MICROVERBYI cont,d STACKING MICROVERB ils lf 16 programs aren't enough, try stacking 2 MrcRovERB ils together for a nearly endless number of revbrb possibilities. Try starting with a small Room feeding into a Medium or Large Room, then let your imagination run wild. See ligure 5 FIGURE 5.
  • Page 17 1 dB increase in the output signal of the compressor/limiter is called the compression rafio. Thus, for a ratio of 4 to 1, an 8 dB increase of input produces a 2 dB increase in output.
  • Page 18 MICRO LIMITER@contd a compression ratio of about 16:1. since we at Alesis feel that the MICRO LIMITER is more easily and quickty set up by just listening, we have eliminated these designations from the front panel of the unit. The MICRO LIMITER employs the "soft-knee" approach, which...
  • Page 19 MICRO LIMITER@cont'd compression ratio. This ratio is indicated by the input LED's in conjunction with the graph on the front of the unit. The release time control determines how quickly the limiter recovers from a signal applied to the input. Farthest to the left is the fastest release time while full to the right is the slowest.
  • Page 20 2 .
  • Page 21 MICRO LIMITER@cont'd 3. Allow an instrument to be recorded hotter onto tape by preventing transients (high level peaks) from pinning the meter. 4. Make a vocal or instrument decreasing the signal peaks and increasing the lower volume parts. This actually enables the signal to be made significantly louder in the mix while increasing the overall signal level meter only slightly 5.
  • Page 22 MICRO LIMITER@cont,d FIGURE 7 F R O M I N S T R U M E N T O R M I X I N G C O N S O L E L E F T I N P U T t MICRO LIMITER for adding sustain for electric guitar Adjust the Input control until the instrument ',snaps"...
  • Page 23 MICRO LIMITER@cont'd FIGURE 9 GUITAR LEFT INPUT LEFT OUTPUT Another possible by-product of increased release time is that the in p u t s i gn al m a y b e co m e d u l l d u e t o fa ct t h a t th e M IC RO LIMITER continues to hold on to a note while the next one is p la y ed , w h i c h p re ve n t s t r a n si e n t s f r o m m a ki n g it t h r o u g h .
  • Page 24 MICRO LIMITER@cont,d FIGURE 1O GUITAR LEFT INPUT MICRO LIMITER for controlling level of an instrument or vocal With the in/out switch in the "out" position, watch the VU or level meter, and/or listen to the differences in volume between notes. The VU or level meter will show a large amount of movement.
  • Page 25 MICRO LIMITER@cont'd and will lack dynamics. Now adjust the Release and Output controls as in the section marked operation. See tigure 11 As a guide, only the first three or four LED s should be lit during this application. F I G U R E 1 1 INSTRUMENT.
  • Page 26 LOSANGELES.CA. BACK Description The Alesis MICRO GATE is a true stereo in/stereo out noise gate. As the name suggests, a noise gate is sort of an electronic fence gate. When there is enough pressure on the gate (the signal is loud enough), the gate will open to let the signal through.
  • Page 27 MICRO GATEtcont'd Controls The Threshold control sets the point at which the MICRO GATE will open (let the signal through). Turning this control clockwise (to the right) lowers the threshold point, making the gate easier to trigger. The Rate control determines how fast the MICRO GATE will close, with the fastest position being all the way to the right (clockwise).
  • Page 28 MICRO GATEtcont'd controfs. See figure 12 FIGURE 12 KEYBOARD TRACK An In/Out switch is provided to bypass the MICRO GATE if desired, or for comparison purposes. Operation After connecting your MICRO GATE (refer to the section on installation), make sure that the unit is ready for operation by making sure that the in/out switch is depressed.
  • Page 29 MICRO GATE@"ont'a allow you to maintain the signal length without the effect while keeping the noise floor to an absolute minimum' Be careful also that the gate doesn't the gate is being triggered by spurious noise, clicks, and pops caused by the Threshold being set just a bit too low. A cure for this is to connect a MICRO LIMITER before the gate in order to set the signal to a strong, constant level.
  • Page 30 MICRO GATE@,onra the Rate control to where the signal of the instrument or microphone is not "clipped" when the gate closes. See tigure l3 FIGURE 13 FROM INSTRUMENT OR MICROPHONE LEFT INPUT MICRO GATE with a mixing console The MICRO GATE can also be used to eliminate noise and buzzes, and generally "tighten-up"...
  • Page 31 MICRO GATE'cont'd jacks are dedicated to another effect, it is possible to plug the MICRO GATE in between the outputs of the tape machine and the tape inputs of the console. See figure 15 Operation is the same as the above example. FIGURE 15 FROM TAPE DECK LEFT INPUI...
  • Page 32 MICRO GATE*contd To vary the reverb decay time, turn the Threshold control to the right until the green "Open" LED is lit, then slowly turn the rate control clockwise until the desired decay time is achieved. The "correct" reverb time is usually determined by the tempo of the music, and how busy the arrangement is.
  • Page 33 MICRO GATE'cont'd not so long as to spill over onto the next drum beat. Vary the delay control for a smoother release if necessary. For an even more striking effect, insert a MICRO LIMITER between the reverb and the MICRO GATE. See figure 17 The limiter should be set for maximum "punch"...
  • Page 34 MICRO GATEtcontd MICRO GATE using the trigger function for special effects Although the MICRO GATE trigger function is usually used for syncing etfects between two instruments see figure 19, it can a ls o b e u se d f or se ve ra l in t e re s t i n g sp e ci a l e f f e c t s a n d enhancements.
  • Page 35 AtE:sls^991?gl|loN 1Qt ee15 LVO AIIgELEJ, BACK Description The Alesis MICRO EQ is a mono 3 band semi-parametric equalizer with sweepable frequencies and switchable bandwidth controls. Equalization, or EQ, is the ability to control the harmonic balan ce , o r timb re , o f a n i n st ru men t, an d can be u se d to compen$ate for frequency deficiencies in either microphones or sound equipment.
  • Page 36 This bandwidth is normally measured in musical octaves, so on a simple graphic equalizer containing only 5 bands, each band would have a 2 octave bandwidth, and a more sophisticated graphic equalizer with 31 bands would have a 1/3 octave bandwidth.
  • Page 37 Hence, the MICRO EQ is designed with a bandwidth control switchable lrom 2 octave (wide) to llzoctave (narrow), and thus is referred to as semi' parametric.
  • Page 38 MICRO EQ cont'd Controls Input Level Low Freq Width The lnput control sets the level of signal that is applied to the MICRO EQ. Since adding large amounts of equalization can sometimes lead to overload of the units connected after the MICRO EQ, the Input control will serve to maintain a distortion free signal by controlling the overall input level.
  • Page 39 MICRO EQ cont'd position, the bandwidth is 2 octave while with the switch in the depressed position, the bandwidth is ll2octave. The Mid Freq Select (the outer ring of the dual concentric knob) allows you to select any frequency between 250 Hz and 6kHz.
  • Page 40 4. Depress the Width switch (lo, mid, or high) to see if the result is more satisfying in the 1/2octave (in) position or 2 octave (out). As with any signal processor, the MICRO Ee should be used with discretion since too much EQ, indiscriminately used, can make the sound worse instead of better.
  • Page 41 2.5kHz as bandwidth is narrowed, resonance at 40 to 60hz F u f l n e s s a t 12 0 o r 2 4 0 Hz , shrill at 7.5 or SkHz Fuflness at 12OHz, boominess at 200 to 24O Hz, presence at SkHz, sibilance at 7.5kHz, air...
  • Page 42 2 . Th e b a ss be t w e e n 6 0 an d 2 SO Hz co nta in s th e fundamental notes of the rhythm section, so Eeing this range can change the musical balance, making it fat or thin.
  • Page 43 MICRO EQ ant'd i n d i s t i n g u i s h a b l e . T o o m u c h b o o s t i n t h i s r a n g e , especially at 3kHz, can also cause listening fatigue.
  • Page 44 -4 to -6 at 200H2 The MICRO EQ provides the perfect accompaniment for the RockmanrM, restoring the lost tonal qualities that you are used to. Use 2 MICRO EQb tor stereo. FIGURE 23 - MICRO EO WITH ROCKMANTM FROM GUITAR ROCKMANTM AtEts.s...
  • Page 45 MICRO EQ cont'd FIGURE 24 - MICRO EO CONNECTED TO RECORDING CONSOLE atersl622 MICRO EQ With Reverbs Such As MIGROVERB ll Many times a reverb sound is required that is artificially bright. The MICRO EQ can easily provide any coloration that might be required to enhance your mix.
  • Page 46 MICRO EQ contd MICRO EQ In-Line With Other Effects To restore a loss of high end, which is sometimes a by-product of effects pedals, the MlcRo Ee should be connected first in series before any other etfects. This will ensure that only the instrument signal is EQed and not any noise from the pedals.
  • Page 47 LoSANGELES, cA. BACK Description The Alesis MICRO ENHANCER is a stereo in/stereo out device that adds high frequency information (high end) to program material in a different way than a normal high frequency equalizer. Unlike most other equalizers, which boost noise as well as the...
  • Page 48 MICRO ENHANCER@,O't,A LED s, determines the slope, or the way the MICRO ENHANCER willwork on high and mid frequencies. The Mix control determines how much high frequency information is added to the signal going through the unit. The Bandwidth control determines how much treble or mid-range i s a d d e d t o t h e s i g n a l .
  • Page 49 MICRO ENHANCER@"o,t'a Now begin to turn the Mix control to the right (clockwise) until the desired amount of high frequency boost is achieved. You can think of the Mix control as an amount control, as this is the one that will add the amount of high frequency boost desired to the signal (or signals) that you send to the MICRO ENHANCER .
  • Page 50 MICRO ENHANCER@ cont'd MICRO ENHANCER on Guitar FIGURE 28 FROM INSTRUMENT OR MIXING CONSOLE MICRO ENHANCER on Electric Bass FIGURE 29 FROM II.ISTRUMENT OR MIXING CONSOLE MICRO ENHANCER on Acoustic Piano FIGURE 30 FROM MIXING CONSOLE MICRO ENHANCER on Vocals FIGURE 31 FROM MICROPHONE OR MIXER TOAMPLIFIEF OR MIXER...
  • Page 51 MICRO ENHANCER',onra MICRO ENHANCER on Guitar through a RockmanrM The MICRO ENHANCER restores the high end that is lost when plu g gi ng the Roc kman rM d ire ctly i n to a n a m p lifie r o r m ixin g console.
  • Page 52 Th e Al e si s M I G R O C U E AMP is a h ea d p h o n e a m p lifie r equipped with 2 separate headphone channels and designed to accept up to 2 stereo low level signals and boost them to a comfortable listening level. These 2 separate stereo inputs are...
  • Page 53 . Th e In p u t 2 Ja c k is a lso paralleled with the Stereo Line Out Jack for chaining additional MICRO CUE AMPS together.
  • Page 54 Below are several methods to accomplish this. Femember: The MICRO CUE AMp has stereo input jacks. Therefore, sends I and 2 or main outs must terminate in a stereo plug. FIGURE 34 - MICRO CUE AMP/CONSOLE INTERFACE A.
  • Page 55 Remember: The Stereo Line Out jack is paralleled with lnput 2, so lnput 2 must always be used as the main input when being used in this application. FIGURE 35. CHAINING MICRO CUE AMPS...
  • Page 56 A L E S I S H R - 1 6 / H R . 1 6 8 FROM TAPE DECK, rNPUr 1 -ffiffii oq -p-p- HEADPHONES ,a'.gs |!c!r! '@@.9, DRUM MACHINE, ETC. INPUT 2 ourz -A^A- -v:w \ / / a OUT 2...
  • Page 57 MICRO CUE AMP cont'd M I C R O C U E A M P U s e d F o r S t a n d - A l o n e S y n t h e s i z e r Programming As in the above example, the MICRO CUE AMP is the perfect companion device for synthesizer programming situations.

  • Page 58: System Set-Ups

    SYSTEM SET-UPS FIGURE 40 - GUITAR OR KEYBOARDS. A (MICRO LIMITER to MICRO GATE to MICRO ENHANCER) GUITAR...
  • Page 59 SYSTEM SET.UPS FIGURE 41 . GUITAR OR KEYBOARDS - B (MICRO LIMITER to MICRO EQ to MICRO GATE) GUITAR...
  • Page 60 SYSTEM SET-UPS FIGURE 42. GUITAR OR KEYBOARDS. C (MlcRo LIM|TER to MTCRO EQ ro MTCRO GATE to MtcRo ENHANCER) LEFT INPUT LEFTOTJTPUT TO AMPLIFIER OR MIXING COT,ISOLE...
  • Page 61 SYSTEM SET-UPS FIGURE 43 . GUITAR OR KEYBOARDS. D ( M I C R O L I M I T E R t o M I C R O E Q t o M I C R O G A T E MICROVERB llto MICRO ENHANCER) GUTTAR o f ' ) '- f' )- f' ) !l ,- --@...
  • Page 62 SYSTEM SET.UPS FIGURE 44. GUITAR OR KEYBOARDS. E ( M I C R O L I M I T E R t o M T C R O E Q t o M T C R O G A T E t o MICROVERB ll to MICRO ENHANCER to MTCRO CUE AMp) GUTlrAR I |€Frcurpur...
  • Page 63 SYSTEM SET-UPS FIGURE 45 - with RockmanrM - A (MICRO LIMITER to MICRO GATE to MICRO ENHANCER) ROCKMAN ,'t€s's I;GBO !.s!!EP LEFT OUTPUT LEFT INPUT A€S'=;ICFOG4trE o z6,_zA,_-A,_; ;, ',i" t '- .W---W--NZ- LEFT OUTPUT LEFT INPUT ,aLEsrs ;;eFO EfllaffG=P RIGHT OUTPUT OUTPUT RIGHT INPUT...
  • Page 64 SYSTEM SET-UPS FIGURE 46 - with Rockmanru - B (MICRO LIMITER to MTCRO Ee to MTCRO GATE to MTCRO ENHANCER) a :&xf. n. h d t . - " '...
  • Page 65 SYSTEM SET.UPS FIGURE 47 - with RockmanrM - C (MICRO LIMITER to MICRO EQ to MICRO GATE to MICRO ENHANCER to MICROVERB ll) RIGHTOUIPUT reHTFPUT THTOUIPI'T...
  • Page 66 SYSTEM SET.UPS FIGURE 48. GATED REVERB (MICROVERB ll to MICRO LIMITER to MTCRO GATE to MTCRO ENHANCER) FROM MIXING CONSOTE LEFT INPUT LEFT OUTPUT LEFT INPUT LEFT OUTPUT LEFT INPUT a'E== ;llGgoclE o A-.A:i6;" ;' THRES/./oI-D LEFT OUTPUT LEFT INPUT ,zx-Esrs lleFOEf;|afGEF LEFT OUTPUT RIGHT OUTPUT...
  • Page 67 SYSTEM SET-UPS FIGURE 49. DURING RECORDING OR LIVE PERFORMANCE (MICRO LIMITER to MICRO GATE to MICROVERB llto MICRO ENHANCER) FROM INSTRUMENT OR MIXING CONSOLE LEFT INPUT A€s=#eBO INPUT LEFT OUTPUT LEFT INPUT A-es|s +lcPoctr, e-(t-(t-o.; -\-1"\7'-\-1' LEFT OUTPUT LEFT INPUT LEFT OUTPUT LEFT INPUT RIGHT OUTPUT...

  • Page 68: Specifications

    POWER/9 volts A.C. 5 Volt Amperes external transformer ATTACKTIM9Ims OPENING TIME/Sms DELAY TIME/min <2ms, max 1.5 sec. CLOSING TIME/min <2ms, max 2 sec. RELEASEmin 20ms, max 2.5 sec. MICRO LIMITER FREOUENCY RESPONSS20Hz ro 2okHzr 1 dB DYNAMIC RANGUlnput 100d8, output dependent on Ratio DfSTORnONk.2Y"THD at lkHz OdB...
  • Page 69 MICRO EQ FREOUENCY RESPONSE/20H2 to ZokHz FREOUENCY RANGESTLow Freq -- ZoHz to 1kHz, Mkl Freq - 25OHz to 6kHz' High Freq - 1.5kHz to 2OkHz-All bands t15dB DfSTORTIONI<.1"/"THD DYNAMIC RANGE/1OOdB CONNECTIONS/Ix1/4' phone iack input, lxll4 power iack input POWER/9 volts A.C. 5 Volt Amperes externaltransformer SIGNAL LEVELSF10 dB to +4 dB nominal INPUT IMPEDANCFJI Meg Ohm MICRO CUE AMP...
  • Page 70 Proof ol purchas€ must be prosented in the form ot a bitt oi sateicancitted som€ olher form of positive proot that the product is within the warranty period. ALESIS rasorves th€ right update any unit return€d for repair. ALESIS reserves the right to change or improve design ot the prodr,€i any time without prior notice.

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