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ACP88

Eight Channel

Compressor/Limiter/Gate

User’s Manual

Version 1.2

Copyright 1998, 2000, 2001, 2007 PreSonus Audio Electronics, Incorporated.

All rights reserved.

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Содержание ACP88

Страница 1: ...ACP88 Eight Channel Compressor Limiter Gate User s Manual Version 1 2 Copyright 1998 2000 2001 2007 PreSonus Audio Electronics Incorporated All rights reserved...

Страница 2: ...Audio Electronics products are warranted only in the country where purchased through the authorized PreSonus distributor in that country against defects in material and workmanship The specific period...

Страница 3: ...Connections 2 1 Front Panel Basic Layout 4 2 2 Compressor Controls 5 2 3 Gate Controls 8 2 4 Gain 10 2 5 Bypass Link 10 2 6 Patch Panel 11 2 7 Power 13 3 Basic Setup and Applications 3 1 Patching 15 3...

Страница 4: ...found in studio or live sound systems We urge you to scan this manual before hooking up your ACP 88 to become familiar with its features and various applications Good luck and enjoy your ACP 88 1 2 F...

Страница 5: ...ile channels 1 2 and 6 remain available for independent applications such as compression limiting or gating as the situation dictates Separate Bypass and Gain for Every Channel Each Channel has a sepa...

Страница 6: ...and Outputs Your Acp 88 accepts either balanced or unbalanced inputs and outputs using tip ring sleeve TRS connectors 4dBu or 10dBV The internal operating level of your ACP 88 can be switched between...

Страница 7: ...Panel Basic Layout Notice that the front panel is divided into eight identical sections These are the eight signal processing chains of the ACP 88 Each channel contains Compressor Limiter Noise Gate...

Страница 8: ...utput level versus the input level For example if you have the Ratio set to 2 1 any signal level above the Threshold setting will be compressed at a compression ratio of 2 1 This simple means that tha...

Страница 9: ...for compression Release Release sets the length of time the compressor takes to return the Gain reduction back to zero no gain reduction Very short Release times can produce a very choppy or jittery s...

Страница 10: ...reduction applied to the signal occurs as soon as the signal exceeds the level set by the threshold With Soft knee compression the onset of gain reduction occurs gradually after the signal has exceede...

Страница 11: ...is advisable to use slower Attack times when gating vocals or quieter instruments to avoid what is often described as gate clicking This phenomenon is not made by a mechanical device in the noise gat...

Страница 12: ...ld typically be set so that the natural decay of the instrument or vocal being gated is not affected Shorter Release times help to clean up the noise in a signal but may cause chattering in percussive...

Страница 13: ...immediate left The Link LED is only active when the signal is present in the Linked channel All of the controls for the Linked channel become disabled and metering occurs by way of the Gain reduction...

Страница 14: ...CONNECTIONS 11 2 6 Patch Panel Back Input The Input jack accepts balanced tip ring sleeve or unbalanced tipsleeve connectors The Input can handle up to 24 dBu unbalanced or up to 18 dBu balanced signa...

Страница 15: ...e amount of Gain reduction to apply When no connector is inserted into this jack the input signal goes directly to the compressor s control circuitry When a connector is inserted into this jack the si...

Страница 16: ...t is not uncommon for condensation to form a film on these contact points Failure to clean these inserts can result in a loss or degradation of signal Should a gate or compressor fail inserting a inch...

Страница 17: ...BASIC SETUP APPLICATIONS 15 3 1 Patching Inserting into your mixers insert points...

Страница 18: ...BASIC SETUP APPLICATIONS 16 Between multi track recorder inputs outputs to mixer outputs inputs unbalanced...

Страница 19: ...hat the input level of the compressor is stable Remember adjusting the signal level being sent to the ACP 88 will require a readjustment of the various parameters of the compressor Turn the Threshold...

Страница 20: ...se knob to about the middle position set the Gate Range to 60dB Range Button pushed in adjust the Gate Threshold slowly clockwise until you begin to hear those other drums disappearing Too high of a T...

Страница 21: ...chain has an inserted signal the Compressor generates the Gain reduction from the Sidechain return signal only Now if you boost those frequencies associated with sibilance SSS such as 2kHz to 8kHz the...

Страница 22: ...BASIC SETUP APPLICATIONS 20 Notes...

Страница 23: ...r 60dB Input Impedance 10kOhms Output Impedance 5I Ohms THD Noise 0 02 Output Gain 20dB to 20dB Compression Curve Types Soft Knee or Hard Knee Compressor Metering Above and Below Threshold Gain Reduct...

Страница 24: ...TECHNICAL 22 4 2 Block diagram...

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