Peavey Automix 80304050 user manual

User manual for the device Peavey Automix 80304050

Device: Peavey Automix 80304050
Category: Music Mixer
Manufacturer: Peavey
Size: 3.91 MB
Added : 4/2/2013
Number of pages: 32
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Abstracts of contents
Summary of the content on the page No. 1

Cover for Automix™
1

Summary of the content on the page No. 2

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. CAUTION: Risk of electrical shock – DO NOT OPEN! CAUTION: To reduce the risk of electric shock, do not remove cover. No user serviceable parts inside. R

Summary of the content on the page No. 3

E N G L I S H AUTOMIX™ Thank you for purchasing the Automix™! The Architectural Acoustics Automix is a high quality automatic mixer with eight transformer balanced, Mic/Line inputs. Each Mic/Line preamp provides a gain control, phantom power (mic inputs), low cut filter, activity/clipping LED, and a choice between manual or automatic operation. Each channel can be muted externally or multiple channels can be muted externally via an assignable mutebus. In addition, channels one and two provide ad

Summary of the content on the page No. 4

before, the non active channels will be further attenuated. The elegance of this approach is really apparent in this next case. Assume a person is stationed exactly equidistant from two microphones. The identical signal arriving at both channels, being coherent, will sum linearly to +6 dB in the sum of all channels. This results in the two channels being turned down 6 dB. Being coherent, these two identical signals summed at -6 dB will add up to unity. These gain relationships hold true no matte

Summary of the content on the page No. 5

Internal Front Panel: 4 11 12 5 6 7 8 9 10 13 14 INTERNAL PANEL FEATURES PRIORITY (Channels 1 and 2 only) (4) Turning the “priority” control clockwise allows one channel to override the others. It does this by tricking the gain computing circuits into thinking this channel is louder than the others. Up to 9 dB of priority is available. GAIN TRIM (5) This control sets the input gain in each preamp. The amount of gain is adjustable from +25 dB to +55 dB (Mic Input). DIP SWITCHES Each channel has

Summary of the content on the page No. 6

Notch Filter Frequency Control (12): The notch filter frequency control is used to select the center frequency of the notch filter. The bottom filter has a range of 40 Hz to 925 Hz. The middle filter has a range of 260 Hz to 6 kHz. The top filter has a range of 500 Hz to 12 kHz. DOWNWARD EXPANDER (13) The downward expander can be used to attenuate the system gain when all of the input signals are low. This can be used to prevent background room noise from being amplified. Setting the Downward Ex

Summary of the content on the page No. 7

MUTE (18) Channels can be muted individually by shorting this terminal to ground. It provides approximately 45 dB of attenuation. figure 1 Mute STATUS OUTPUT (19) The status is a DC logic output that is low (0 volts) when the channel is active and high (3.8 volts) when the channel is not active. This DC voltage can be used to key video cameras or trigger key lights on active microphones. LOOP (Channels 1 and 2) (20) This is a signal loop that allows an external device such as an EQ to be insert

Summary of the content on the page No. 8

REMOTE VOLUME (22) The master level of the mixer can be controlled remotely with a simple connection on the back of the unit. A 10 K to 100 K potentiometer can be wired as shown in the drawing below. A 10 K pot will provide approxi- mately 0 to 25 dB of attenuation. A 100 K pot will provide 0 to 45 dB of attenuation. If desired, a control voltage can be inserted to command 0 to 70 dB of attenuation. The internal gain trim must be set full CW to achieve the maximum attenuation range of the remote

Summary of the content on the page No. 9

You now have a 16 (or more) channel automatic mixer. Any unit can be used for the system output. The notch filter and master controls will only affect that unit's output. NOTE: When configuring multiple units, the wire jumpers in the ALOAD and the CLOAD must be left in one unit and one unit only. MASTER OUTPUT (24) The master output is a 600 ohm, transformer balanced output that can be used to feed an external power amplifier. It is at this point that the automatically mixed or the manually mixe

Summary of the content on the page No. 10

SPECIFICATIONS Nominal Out = +2 dBu (1 volt) FREQUENCY RESPONSE: PREAMP SPECS 20 Hz to 20 kHz, +1/-2 dB at nominal EIN: -122 dBu (terminated 150 ohms) MAXIMUM OUTPUT LEVEL: +20 dBu (Hi-Z load) PREAMP GAIN RANGE: +16 dBm (600 ohm load) 25 dB to 55 dB REMOTE VOLUME RANGE: INPUT IMPEDANCE: (MIC and LINE) 0 dB to 70 dB of attenuation 2,000 ohms (transformer balanced) OFF CHANNEL ATTENUATION: PHANTOM POWER: 0 dB to -70 dB +12 volts at Mic ± terminals MUTE: INPUT SENSITIVITY: Channel is attenuated 45

Summary of the content on the page No. 11

Flow Diagram 11

Summary of the content on the page No. 12

E S P A Ñ O L Consulte los diagramas del panel delantero en la sección de inglés de este manual. ¡Gracias por tu compra de la Automix™! La Architectural Acoustics Automix es una mezcladora automática de alta calidad con ocho entradas de micrófono/línea balanceadas por transformador. Cada preamplificador de micrófono/línea ofrece control de ganancia, refuerzo de potencia (phantom power) (para las entradas de micrófono); filtro de corte de graves, indicador LED de actividad/recorte por sobrecarga,

Summary of the content on the page No. 13

atenuados aún más. La elegancia de este enfoque es realmente evidente en este siguiente caso. Asume que una persona está situada exactamente a la misma distancia de dos micrófonos. La señal idéntica que llega a cada micrófono, al ser coherente, sumará linealmente +6 dB en la suma de todos los canales. Esto tiene como resultado que se baje en 6 dB a los dos canales. Al ser coherentes, estas dos señales idénticas con una suma de -6 dB darán como resultado la unidad. Estas relaciones de ganancias

Summary of the content on the page No. 14

OFF/PHAN (APAGADO/REFUERZO DE POTENCIA) (9) Cuando este interruptor está en la posición de REFUERZO DE POTENCIA, se proporciona un refuerzo de potencia de +12 volts a las terminales ± de micrófono. Esto proporciona potencia para micrófonos de condensador y debe anularse cuando se usen micrófonos dinámicos o entradas sin balance. ACTIVE/CLIPPING LED (Activo/Indicador LED de recorte por sobrecarga) (10) El indicador LED brillará en verde cuando el canal esté activo y el estátus de salida sea bajo

Summary of the content on the page No. 15

FUNCIONES DEL TABLERO TRASERO MIC INPUTS (Entradas de micrófono) (15) Para usarse con micrófonos de baja impedancia o fuentes de bajo nivel. Éstas son entradas balanceadas por transformador con una impedancia de 2,000 ohms. LINE IMPUTS (Entradas de línea [Canales del 3 al 8]) (16) Éstas permiten que se usen entradas de línea en los canales del 3 al 8. Éstas son entradas balanceadas por transformador a través de un acentuador de resistencia de 30 dB. La impedancia de entrada es de 2,000 ohms. DIR

Summary of the content on the page No. 16

LINK PORT (Puerto de enlace) (23) Se pueden enlazar múltiples Automixes para aumentar el número de entradas disponibles. Enlazar automixes es un proceso muy sencillo, Puede hacerse con un destornillador plano pequeño y un largo de cable blindado de dos conductores. a. Usando el destornillador pequeño, retira los cables de puente instalados en la fábrica del puerto de enlace de la unidad secundaria. Ver la figura 5, Puerto de enlace, de la sección en inglés b. Conecta las mezcladoras con e

Summary of the content on the page No. 17

a. Incrementa lentamente el recorte de ganancia maestro (interno) hasta que se oiga un ligero zumbido agudo. b. Selecciona la gama de frecuencia apropiada y gira el control correspondiente hacia la derecha hasta alrededor de la posición de las 12 en punto. c. Gira lentamente el control de frecuencia hacia derecha e izquierda hasta que ya no se oiga el zumbido agudo. d. De nuevo, aumenta lentamente el recorte de ganancia maestro hasta que se oiga el zumbido agudo. Si esta es una frecuencia difere

Summary of the content on the page No. 18

F R A N C A I S Veuillez vous référer au "front panel art" situé dans la section en langue anglaise de ce manuel. Merci d’avoir choisi l’Automix‘ ! L’Automix, conçu par Architectural Acoustics, est un mélangeur automatique de haute qualité, équipé de huit entrées Micro/Ligne symétrisées par transformateur. Chaque préampli Micro/Ligne offre une commande de gain, une alimentation fantôme (pour les entrées mic), un filtre de coupure bas, une DEL d’activité/écrêtage, ainsi que le choix entre un mode

Summary of the content on the page No. 19

Un deuxième exemple, plus intéressant, est celui de deux personnes parlant simultanément. Pour simplifier cet exemple, supposons qu’elles parlent aussi fort l’une que l’autre. Puisque ces deux sources ne sont pas cohérentes (c’est-à-dire pas identiques), l’amplitude totale est la racine carrée de la somme des carrés de leurs amplitudes, soit exactement 3 dB de plus que chacune des amplitudes prises séparément. Lorsque l’amplitude de chacun de ces deux canaux est comparée à cette somme, leur VCA

Summary of the content on the page No. 20

OFF/MBUS (7) Ce sélecteur permet de connecter le canal au mutebus du système. Cela permet d’assourdir plusieurs entrées sous commande externe. REMARQUE : voir MUTEBUS. LO CUT/FLAT (8) Ce sélecteur permet d’activer le filtre de coupure basse. Ce filtre permet une atténuation des basses fréquences, qui contribue à éliminer les bruits indésirables (prise en main des micros, chocs sur la table, etc.). L’atténuation commence à 75 Hz (-3 dB) ; la pente du filtre est de 6 dB par octave. OFF/PHAN (9) Lo


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