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Dual Compressor/Expander/Limiter Operating Manual
CEL-2A
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Intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. Intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. C CA AU UT TI IO ON N: : Risk of electrical shock — DO NOT OPEN! C CA AU UT TI IO ON N: : To reduce the risk of electric shock, do not remove cover. No
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I IM MP PO OR RT TA AN NT T S SA AF FE ET TY Y I IN NS ST TR RU UC CT TI IO ON NS S W WA AR RN NI IN NG G: : When using electrical products, basic cautions should always be followed, including the following: 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block any of the ventilation openings. Install in accordance with manufacturer’s instructions. 8.
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E EN NG GL LI IS SH H ™ ™ C CE EL L- -2 2A A Dual Compressor/Expander/Limiter Thank you for purchasing the CEL-2A. You’ll find plenty of features and versatility in this single-rack space‚ dual compressor. The CEL-2A can be operated as either two independent compressors or as a linked‚ stereo compressor with true RMS summing. High-quality‚ voltage-controlled amplifier (VCA) and RMS-rectifier integrated circuits are used to maintain low distortion and excellent noise performance. This unit has fu
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F F R R O O N N T T P P A A N N E E L L ( (1 1) ) L Lo ow w- -c cu ut t f fi il lt te er r An 18 dB filter with a cut-off frequency of 200 Hz in the side chain (only)‚ does not filter the audio path. This filter is used to prevent low frequency modulation (which often appears as pumping and breathing) by reducing the affects of wind‚ stage and handling noise. If it is used with bass-only program material‚ it could prevent the compressor from seeing the source. It does not require the extern
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( (7 7) ) C Co om mp pr re es ss so or r T Th hr re es sh ho ol ld d This sets the point that compression action begins. Any signal above this threshold will be compressed at the amount set by the ratio control. If it drops below this point‚ the compressor has no affect. At the maximum setting‚ the compressor will be out of circuit for all signals except very high peaks. At the minimum setting‚ the source will be continuously compressed. ( (8 8) ) C Co om mp pr re es ss so or r R Ra at ti io
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R R E E A A R R P P A A N N E E L L ( (1 18 8) ) A AC C M Ma ai in ns s I In np pu ut t Connect the appropriate line cord to this connector to provide power to the unit. Damage to the equipment may result if improper line voltage is used. Operate only with the specified AC input voltage applied. ( (1 19 9‚ ‚ 2 20 0‚ ‚ 2 26 6‚ ‚ 2 27 7) ) B Ba al la an nc ce ed d O Ou ut tp pu ut ts s XLR and 1/4" TRS‚ servo-balanced‚ line level outputs. Pin 2 (tip) is the positive phase‚ pin 3 (ring)
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S Se et tt ti in ng g t th he e C Co on nt tr ro ol ls s If you are starting from scratch or have something out of whack and do not know exactly what to adjust‚ begin by setting the controls so that all functions are disabled. Here are the control positions for this: E Ex xp pa an nd de er r Threshold min (off ) Ratio min (1:1) C Co om mp pr re es ss so or r Threshold max (+20 dB) Ratio min (1:1) Attack center (50 mSec) Release center (.5 sec) Limit max (off ) Gain min (0 dB) Low Cut out (off
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4. To use as a de-esser‚ engage the side-chain D De e- -e es ss s filter. Set the A At tt ta ac ck k and R Re el le ea as se e controls at minimum and the C Co om mp pr re es ss so or r R Ra at ti io o to 4:1. Speak or sing a phrase with heavy sibilance (lots of “Ss”) and adjust the C Co om mp pr re es ss so or r T Th hr re es sh ho ol ld d until 6–9 dB of gain reduction occurs at the peaks. This will get you close to where you need to be. Modify the settings for more or less reduction.
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C CE EL L- -2 2A A S SP PE EC CI IF FI IC CA AT TI IO ON NS S C Co on nt tr ro ol l A Ad dj ju us st tm me en nt t R Ra an ng ge e Expander Threshold -80 dBu to +10 dBu Expander Ratio 1:1 (off ) to 1:5 (gate) Expander Attack.5 mSec (fixed) Expander Release 200 mSec (fixed) Compressor Threshold -40 dBu to +20 dBu Compressor Ratio 1:1 (off ) to infinite:1 (limit) Compressor Attack.5 mSec to 100 mSec Compressor Release .05 sec to 2 sec Limiter Threshold 0 dBu to +20 dBu (off ) Limiter Attack.5 mSe
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C CE EL L- -2 2A A A Ap pp pl li ic ca at ti io on n G Gu ui id de e The key to successfully using a compressor is to visualize the signal’s envelope and then create a scheme that closely tracks that flow. Thus, a kick drum, with its sharp attack and fast decay, requires a tracing envelope with a quick attack, somewhat heavy clamping, and fast release of the compressed signal. The CEL-2A has enough parameter control to “dial-in” almost any desired configuration. With the unique architecture of
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A Ac co ou us st ti ic c G Gu ui it ta ar r If the guitar is mic’d, it will usually have a darker tone than a signal derived through a built-in pickup. To address the tone of a mic’d acoustic, the key is to allow enough of the initial percussive phase of the tone to pass intact. At the same time, enough control must be exercised to prevent the tail of the signal from overlapping the next strum. If the ambient noise is low, leave the expansion gate out of the path. However, if the background is
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DEUTSCH CEL-2A Dualer Kompressor/Expander/Limiter Wir möchten uns bei Ihnen dafür bedanken, dass Sie sich für den CEL-2A entschieden haben! Dieser nur eine Rack-Höhe messende duale Kompressor bietet Ihnen zahlreiche Funktionen und große Vielseitigkeit. Der CEL-2A kann entweder als zwei unabhängige Kompressoren oder als verknüpfter Stereokompressor mit echter RMS-Summierung betrieben werden. Hochwertige, spannungsgeregelte Verstärker- und integrierte RMS-Gleichrichterschaltkreise gewährleisten ge
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· · V Vo ol ll ls st tä än nd di ig ge e Ü Üb be er rw wa ac ch hu un ng g d de er r G Ga ai in n- -V Ve er rr ri in ng ge er ru un ng g v vo on n E Ex xp pa an nd de er r- -, , K Ko om mp pr re es ss so or r- - u un nd d L Li im mi it te er r- -P Pr ro oz ze es ss so or re en n · · V Vo ol ll ls st tä än nd di ig g s sy ym mm me et tr ri ie er rt te e E Ei in n- - u un nd d A Au us sg gä än ng ge e ( (X XL LR R u un nd d T TR RS S 1 1/ /4 4" ") ) · · S So of ft t- -K Kn ne ee e-
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( (5 5) ) E Ex xp pa an nd de er r T Th hr re es sh ho ol ld d Hiermit wird der Pegel festgelegt, bei dem der abwärts gerichtete Expander zu arbeiten beginnt. Fällt das Eingangssignal unter den eingestellten Schwellenwert, blendet der Expander ihn entsprechend der durch den Verhältnisregler eingestellten Steigung (Verhältnis) aus. Durch die Soft-Knee-Topologie wird der Übergang von deaktiviertem zu aktiviertem Zustand mittels dynamischer Verschiebung der Steigung durch den Übergangspunkt ausge
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( (1 13 3) ) I In np pu ut t/ /O Ou ut tp pu ut t L Le ev ve el l M Me et te er r S Sw wi it tc ch h Dieses Messgerät ist an den Ausgang oder den Eingang angeschlossen und zeigt die Spitzen an. Ist dieser Schalter nicht gedrückt, zeigen die LEDs den Ausgang an, ist er gedrückt, zeigen sie den Eingang an. ( (1 14 4) ) S St te er re eo o L Li in nk k Soll der Kompressor mit Stereosignalen verwendet werden, sollte der Link-Schalter gedrückt werden. So erfolgen eine echte RMS-Summierung zur pr
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R R E E A A R R P P A A N N E E L L 18 19 21 23 25 27 29 22 22 26 28 30 ( (1 18 8) ) A AC C M Ma ai in ns s I In np pu ut t Schließen Sie ein geeignetes Netzkabel an diesen Stecker an, um das Gerät mit Strom zu versorgen. Wird eine ungeeignete Netzspannung verwendet, kann dies die Ausrüstung beschädigen. Betreiben Sie die Geräte nur mit der angegebenen Wechselstrom-Eingangsspannung. ( (1 19 9‚ ‚ 2 20 0‚ ‚ 2 26 6‚ ‚ 2 27 7) ) B Ba al la an nc ce ed d O Ou ut tp pu ut ts s Servo-symmetr
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E Ei in ns st te el ll le en n d de er r R Re eg gl le er r Wenn Sie von Grund auf beginnen oder nichts so richtig funktioniert, und Sie nicht wissen, was Sie überhaupt einstellen sollen, stellen Sie die Regler zunächst so ein, dass sämtliche Funktionen deaktiviert sind. Die Reglerpositionen dazu sind: E Ex xp pa an nd de er r Threshold min (off ) Ratio min (1:1) C Co om mp pr re es ss so or r Threshold max (+20 dB) Ratio min (1:1) Attack center (50 mSec) Release center (.5 sec) Limit max (off
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Fallen des Signals zu Störungen durch Pumpen bzw. Atmen führen. Niedrigere Verhältnisse haben eine sanftere Wirkung. Stellen Sie den A At tt ta ac ck k- -R Re eg gl le er r auf einen geringen Wert, um Zacken in der Anstiegsflanke zu verhindern, oder auf einen hohen Wert, um sie durchzulassen (dies wird häufig verwendet, um den Klick eines Drum-Schlags durchzulassen). Der R Re el le ea as se e- -R Re eg gl le er r wird eingestellt, um den Übergang zu glätten, wenn er bei der Kompression durchkomm
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C CE EL L- -2 2A A S SP PE EC CI IF FI IC CA AT TI IO ON NS S C Co on nt tr ro ol l A Ad dj ju us st tm me en nt t R Ra an ng ge e Expander Threshold -80 dBu to +10 dBu Expander Ratio 1:1 (off ) to 1:5 (gate) Expander Attack.5 mSec (fixed) Expander Release 200 mSec (fixed) Compressor Threshold -40 dBu to +20 dBu Compressor Ratio 1:1 (off ) to infinite:1 (limit) Compressor Attack.5 mSec to 100 mSec Compressor Release .05 sec to 2 sec Limiter Threshold 0 dBu to +20 dBu (off ) Limiter Attack.5 mSe
