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Altec Lansing digital signal processor - page 1
4048A di git al signal processor Altec Lansing Pr Altec Lansing Pr Altec Lansing Pr Altec Lansing Pr Altec Lansing Pr ofessional ofessional ofessional ofessional ofessional 1000 W . Wilshire Blvd. Suite 362 Oklahoma City , OK 73116 USA A division of Altec Lansing T echnologies Inc, Milford P A 18337-0277 Made In USA & ...
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Altec Lansing digital signal processor - page 2
2 Operating Manual -4048A digital signal processor T able O f Co ntents 1 1 1 1 1 INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 2 2 2 2 UNP UNP UNP UNP UNP ACKING ACKING ACKING ACKING ACKING . . . . . . . . . . . . . . . . . . ...
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Altec Lansing digital signal processor - page 3
3 Operating Manual-4048A digital signal processor W ARNING: THIS APP ARA TUS MUST BE EARTHED The exclamation point within an eqilateral triangle is intended to alert the user to the presence of important operating and mainte- nance instructions in the literatur e accompanying the device. The lightning flash with arr owhead symbol, within an equilat ...
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Altec Lansing digital signal processor - page 4
4 Operating Manual -4048A digital signal processor 1. INTR ODUCTION Y our new 4048A is a flexible four input/eight output digital signal processor capab le of pr ecise control of a broad range of audio functions. Because it has no user controls, it is ideal for applications where real-time changes are unlikely or when tamper -proof security is requ ...
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Altec Lansing digital signal processor - page 5
5 Operating Manual-4048A digital signal processor 4. FR ONT P ANEL FEA TURES 4.1 Input Channels The 4048A has four input channels, each of which can be routed to any combination of output channels. Each input channel's three color Sig LED indicates input signal le vel of -20dB (green), 0dB (amber), and +20dB clip (red) respecti ve ly . Note th ...
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Altec Lansing digital signal processor - page 6
6 Operating Manual -4048A digital signal processor Eur oblock Con necto r S y ste m + - G + - G 5. REAR P ANEL FEA TURES 5.1 Input Connections Balanced input signals are connected to the 4048A using the included "Euro Block" connector . A flat blade scre wdriver is required to connect a stripped wire lead to the loose connector , which is ...
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Altec Lansing digital signal processor - page 7
7 Operating Manual-4048A digital signal processor 5.3 Contact Closure Connector There are no user controls on the 4048A, making it ideal for permanent installations where security is an issue. There may be times, ho wever , where audio system adjustments must be made in response to real time acoustic changes, such as room size. For these types of c ...
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Altec Lansing digital signal processor - page 8
8 Operating Manual -4048A digital signal processor 6. AL TEC LANSING MAESTRO ™ SOFTW ARE Altec Lansing of fers a po werful software interf ace for the W indows PC en vironment, providing control for the 4048A digital signal processor . All controls are intuitiv ely re presented in a user friendly way , and on-line help is av ailable for key funct ...
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Altec Lansing digital signal processor - page 9
9 Operating Manual-4048A digital signal processor 7. GETTING ST AR TED 7.1 Conf iguration Options Altec Lansing Maestro Software for the 4048A includes 10 permanent default configurations which can be used as starting points for setting up user def ined presets. Modif ied configurations can then be sa ved to either disk ( filename .alp ) or one of ...
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Altec Lansing digital signal processor - page 10
10 Operating Manual -4048A digital signal processor 7.3 A udio Functions Editing of audio controls is done through the use of scroll bars, numerical entry , various keyboard shortcuts, or by visually dragging f ilter points in the frequency response windo w . Ease of use, especially in the fr equency r esponse window , makes it possible for fast, p ...
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Altec Lansing digital signal processor - page 11
11 Operating Manual-4048A digital signal processor Parametric EQ (PEQ): uses peak f ilters with the a bility to control boost or cut, frequency center , and band- width. Think of one band of parametric EQ as a single graphic equalizer fader except that the fr equency is variable, not fix ed, and that the band width, or how "wide" the f il ...
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Altec Lansing digital signal processor - page 12
12 Operating Manual -4048A digital signal processor Shelving EQ f ilters: 1st order filters use a gentle 6dB per octa ve slope, while 2nd order f ilters use a 12dB per octav e slope f or more a pronounced boost or cut. All shelving filters ha ve a boost/cut range of +/-15dB. Low shelving filters ha ve a frequency range from 19.7Hz through 2kHz, and ...
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Altec Lansing digital signal processor - page 13
13 Operating Manual-4048A digital signal processor Butterworth Butterworth f ilter s individually are alw ays -3dB at the displayed crossover fr equency and are used because they ha ve a "maximally flat" passband and sharpest transition to the stopband. When a Butterworth HPF and LPF of the same crosso ver frequenc y are summed , the comb ...
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Altec Lansing digital signal processor - page 14
14 Operating Manual -4048A digital signal processor 7.3g Delay In large installations or outdoor v enues there ar e often many speakers in v ar i- ous locations to get the best coverage possible. Since sound trav els relat i vely slow through air (1130 ft/s at 20ºC), multiple loudspeaker locations can create a situation where the original audio si ...
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Altec Lansing digital signal processor - page 15
15 Operating Manual-4048A digital signal processor Attack and Release settings adjust the time it takes the limiter to engage and then disengage when the signal increases abov e threshold and then subsequently falls back belo w threshold. Attack time is adjustable from 0.5ms/dB through 50ms/dB, while release time ranges from 10ms/dB through 1s/dB. ...
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Altec Lansing digital signal processor - page 16
16 Operating Manual -4048A digital signal processor the remaining se ven monitors, providing a consistent starting point for each mix. T o copy , first select the input or output to copy from, then click <Edit/Cop y>, then click on the input or output to copy to, clicking <Edit/Paste> to complete the action. 8.4 Security There are two l ...
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Altec Lansing digital signal processor - page 17
17 Operating Manual-4048A digital signal processor 2.) Use a v alid PC serial port. Y ou must use a serial port that is not opened to any other application, such as a mouse, modem, or another program. T o verify that the port e xists look in: Control P anel - System - De vice Manager - Ports. While y ou're there, make sure that the port has no ...
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Altec Lansing digital signal processor - page 18
18 Operating Manual -4048A digital signal processor 11. DIMENSIONS 12. W ARRANTY INFORMA TION The unit you ha ve just purchased is protected by a limited f iv e-year warranty . For warranty service or to obtain a return RMA number , please call Altec Lansing technical ser vices at 405-848-3108. Fill out the information belo w for your records. Seri ...
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Altec Lansing digital signal processor - page 19
19 Operating Manual-4048A digital signal processor A /D Inp ut Mute In pu t EQ Input Meter LE Ds Input Channels A - D -40 t o +1 2d B Inp ut Gain 8 Band s of Parametric, 1s t O rd er LS , 2n d O r d er LS 1s t O rd er H S , 2n d O r d er HS , or All-Pass Input Cl i p Indicator Ou tp ut EQ 6 Bands of Parametric, 1s t O rd er LS , 2n d O r d er LS 1s ...
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Altec Lansing digital signal processor - page 20
Printed in USA 4048A-0 0503 Operating Manual-4048A digital signal processor Altec Lansing Pr Altec Lansing Pr Altec Lansing Pr Altec Lansing Pr Altec Lansing Pr ofessional ofessional ofessional ofessional ofessional 1000 W . Wilshire Blvd. Suite 362 Oklahoma City , OK 73116 USA A division of Altec Lansing T echnologies Inc, Milford P A 18337-0277 M ...
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