QSC Audio ISA 280 user manual

User manual for the device QSC Audio ISA 280

Device: QSC Audio ISA 280
Category: Stereo Amplifier
Manufacturer: QSC Audio
Size: 3.79 MB
Added : 2/24/2013
Number of pages: 56
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Summary of the content on the page No. 1

Installed Sound Professional Audio Amplifiers
 ISA 280
 ISA 450
 ISA 750
 ISA 1350
 ISA 300Ti
User Manual
EN
 ISA 500Ti
 ISA 800Ti
Manual del Usario
ES
Manuel de l’utilisateur FR
DE
Bedienhandbuch
用户手册
CH
TD-000136-00 Rev.B
*TD-000136-00*

Summary of the content on the page No. 2

Important Safety Precautions & Explanation of Symbols CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. The lightning flash with arrowhead symbol within an equilateral triangle is 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 EN humans. The exclamation point

Summary of the content on the page No. 3

Introduction Thank you for purchasing this QSC power amplifier. Please read the following directions to obtain the best results. Key Features: ISA 280, 450, 750, and 1350 models: 2 channels at 2 ohms (min.) impedance, bridgeable into 4 ohms (min.) impedance. ISA “Ti” models: low impedance outputs and isolated 70V or 100V for distributed audio systems, bridgeable for 140V and 200V. QSC DataPort V2 connects to optional QSC signal processing accessories and amplifier monitoring systems. Mode s

Summary of the content on the page No. 4

Rack Mounting Use four screws and washers to mount the amplifier to the equipment rack rails. To use the amplifier outside a rack, attach the self-adhe- sive rubber feet to the bottom. EN Cooling Air flows from the rack, into the back of the amplifier, and out the front. This keeps the rack cool. The fan automatically runs faster when the amp is working hard. Do not block the rear intake or front air vents! Air flow in QSC amplifiers: Cool air is drawn into the rear of the amplifier by the

Summary of the content on the page No. 5

Selecting Stereo, Parallel, or Bridge Mode The amplifier can be set for normal Stereo ISA 300Ti/ 500Ti/800Ti ISA 280/450/750/1350 mode, Parallel Input mode, or Bridge Mono mode. Ti Stereo Mode - Stereo Mode - Stereo Mode- Each channel remains inde- Switches 3, 4, 5, 6, 7, Switches 4, 5, 6 and 7 pendent, and may be used for two different and 8 are all set to the are all set to the LEFT signals. LEFT position. position. Parallel Mode - This setting connects both inputs together. One s

Summary of the content on the page No. 6

Balanced Terminal Block inputs: Strip Inputs the wire ¼ inch (6 mm) and connect to Each channel has a balanced XLR and terminal block input. The the plug as shown. Be sure to tighten input impedance is 20k ohm balanced or 10k ohm unbalanced. the screws firmly. Balanced connections are recommended for less AC hum and interference, especially with long cable runs. Unbalanced con- Unbalanced Terminal Block inputs: nections may be suitable for short cables. The signal's source Strip the wire

Summary of the content on the page No. 7

Isolated Distributed Line Outputs: ISA 300Ti, ISA 500Ti, and ISA 800Ti Models Only Wiring connections are shown on the back of the chassis. STEREO and PARALLEL connections are shown on the right side of the terminals, and BRIDGE mode is shown on the left side. Carefully note the polarity marks, which are arranged to make Bridge Mode connections easier. Stereo and Parallel Mode- Connect each 70V/100V cir- cuit to its own channel of the amplifier, as shown on the label, right of terminals.

Summary of the content on the page No. 8

LED Indicators The LED indicators can be used to monitor system operation and identify common problems. POWER: A single GREEN LED, on left side of AC Power switch. Normal indication: AC switch ON: LED will illuminate. If no indication: Check AC power cord and AC outlet. Power on indicator. CLIP: Two RED LEDs, one indicator for each channel. Normal indication: illuminates whenever the amplifier is driven beyond full power. The resulting distor- tion corresponds to the brightness of the LED. D

Summary of the content on the page No. 9

Specifications (all models) DYNAMIC HEADROOM 2 dB at 4 ohms DISTORTION SMPTE-IM Less than 0.01% SIGNAL TO NOISE -100 dB (unweighted, 20 Hz.-20 kHz.) INPUT CLIPPING +22 dBu, 10 Vrms (ISA 1350: +15.3 dBu, 4.53 Vrms) INPUT IMPEDANCE 10k ohms unbalanced, 20k ohms balanced AMPLIFIER PROTECTION Short circuit, open circuit, thermal, ultrasonic and RF protection. Stable into reactive or mismatched loads. LOAD PROTECTION Turn-on/turnoff muting, AC coupling (DC fault blocking), Clip limiting. EN COOLING

Summary of the content on the page No. 10

Specifications: ISA 280, ISA 450, ISA 750, and ISA 1350 OUTPUT POWER in watts ISA280 ISA 450 ISA 750 ISA 1350 FTC: 8 ohms, 2 channels driven 185 260 450 800 (20 Hz - 20 kHz, 0.1% THD) 4 ohms 2 channels driven 280 400 650 1300 (20 Hz - 20 kHz, 0.1% THD) EIA: 16 ohms, 1 channel driven 100 140 250 475 (1 kHz, 0.1% THD) 8 ohms, 1 channel driven 200 280 475 850 (1 kHz, 0.1% THD) 4 ohms, 1 channel driven 300 450 750 1400 (1 kHz, 0.1% THD) 2 ohms, 2 channels driven 430 700 1200 2000 (1 kHz, 1.0% THD) E

Summary of the content on the page No. 11

Specifications: ISA 300Ti, ISA 500Ti, and ISA 800Ti OUTPUT POWER in watts ISA 300Ti ISA 500Ti ISA 800Ti FTC: 8 ohms, 2 channels driven 185 260 450 (20 Hz - 20 kHz, 0.1% THD) 4 ohms 2 channels driven 280 400 650 (20 Hz - 20 kHz, 0.1% THD) EIA: 16 ohms, 1 channel driven 100 140 250 (1 kHz, 0.1% THD) 8 ohms, 1 channel driven 200 280 475 (1 kHz, 0.1% THD) 4 ohms, 1 channel driven 300 450 750 (1 kHz, 0.1% THD) 2 ohms, 2 channels driven 430 700 1200 (1 kHz, 1.0% THD) EN Bridged Mono: 16 ohms 370 520 9

Summary of the content on the page No. 12

Warranty Information & How To Contact QSC Warranty (USA only; other countries, see your dealer or distributor) Disclaimer QSC Audio Products, Inc. is not liable for any damage to speakers, or any other equipment that is caused by negligence or improper installation and/or use of this amplifier product. QSC Audio Products 3 Year Limited Warranty QSC Audio Products, Inc. (“QSC”) guarantees its products to be free from defective material and / or workmanship for a period of three (3) years from

Summary of the content on the page No. 13

Precauciones importantes de seguridad y explicación de los símbolos PRECAUCIÓN: PARA REDUCIR EL RIESGO DE DESCARGA ELÉCTRICA, NO QUITE LA CUBIERTA. EL INTERIOR NO CONTIENE PIEZAS A LAS QUE EL USUARIO PUEDA DAR SERVICIO. REFIERA EL SERVICIO A PERSONAL CALIFICADO. El símbolo del rayo con una punta de flecha dentro de un triángulo equilátero tiene la intención de alertar al usuario de la presencia de voltaje "peligroso" no aislado dentro de la caja del producto, que puede ser de magnitud sufici

Summary of the content on the page No. 14

Introducción Muchas gracias por la compra de este amplificador de potencia QSC. Por favor lea las siguientes instrucciones para obtener resultados óptimos. Características clave: Modelos ISA 280, 450, 750 y 1350: 2 canales a 2 ohmios (mín.) de impedancia, puenteables a 4 ohmios (mín.) de impedancia. Modelos ISA “Ti”: salidas de baja impedancia y aisladas de 70V o 100V para sistemas de audio distribuido, puenteables a 140V y 200V. El QSC DataPort V2 se conecta a accesorios de procesamiento d

Summary of the content on the page No. 15

Montaje en bastidor Use cuatro tornillos y arandelas para montar el amplificador en los rieles del bastidor del equipo. Para usar el amplificador sin bastidor, instale las patas de caucho autoadhesivas en la parte inferior. ES Enfriamiento El aire fluye desde el bastidor hacia el interior por la parte posterior del amplificador y hasta afuera por la parte frontal. Este mantiene el bastidor frío. El ventilador automáticamente funciona más rápido cuando el amplificador está trabajando mucho.

Summary of the content on the page No. 16

Selección del modo Estéreo, Paralelo o Puenteado El amplificador se puede ajustar en modo estéreo normal, modo de entrada paralela o modo mono puenteado. ISA 300Ti/ 500Ti/800Ti ISA 280/450/750/1350 Modo estéreo: cada canal permanece independiente, y se puede usar para dos señales diferentes. Modo estéreo: los Modo estéreo Ti - Los Modo paralelo: este ajuste conecta ambas conmutadores 4, 5, 6 y 7 conmutadores 3, 4, 5, 6, 7 entradas juntas. Una señal alimenta ambos todos están ajustados

Summary of the content on the page No. 17

Entradas Cada canal tiene balance de audio XLR y una entrada al bloque Entradas balanceadas del bloque de de terminales. La impedancia de entrada es de 20k ohmios terminales: quite 1/4 de pulgada (6 mm) de balanceada o 10k ohmios no balanceada. aislamiento del cable y conecte la clavija como se muestra. Asegúrese de apretar Se recomiendan conexiones balanceadas para un menor zumbido e interferencia de la CA, especialmente en tramos firmemente los tornillos. largos de cable. Las conexione

Summary of the content on the page No. 18

Salidas aisladas de línea distribuida: Sólo los modelos ISA 300Ti, ISA 500Ti e ISA 800Ti Las conexiones del cableado se muestran en la parte posterior del chasis. Las conexiones en ESTÉREO y PARALELO se muestran en el lado derecho de las terminales, y el modo PUENTEADO se muestra en el lado izquierdo. Note detenidamente las marcas de polaridad, que están configuradas para facilitar las conexiones del modo puenteado. Modo estéreo y paralelo- Conecte cada circuito de 70V/100V a su propio c

Summary of the content on the page No. 19

Indicadores LED Los indicadores LED se pueden usar para supervisar la operación del sistema e identificar problemas comunes. POTENCIA: Un solo LED VERDE, en el lado izquierdo del conmutador de CA. Indicación normal: Conmutador de CA ENCENDIDO: El LED se iluminará. Indicador de Si no hay indicación: Revise el cable de alimentación de CA y el tomacorrientes de CA. encendido. RECORTE: Dos LED ROJOS, un indicador para cada canal. Indicación normal: Se ilumina siempre que el amplificador se exc

Summary of the content on the page No. 20

Especificaciones (todos los modelos) ESPACIO LIBRE DINÁMICO 2 dB a 4 ohms DEFORMACIÓN SMPTE-IM menos de 0.01 % SEÑAL A RUIDO -100 dB (no ponderado, 20 Hz.-20 kHz.) RECORTE DE ENTRADA +22 dBu, 10 Vrms (ISA 1350: +15.3 dBu, 4.53 Vrms) IMPEDANCIA DE ENTRADA 10k ohmios no balanceado, 20k ohmios balanceado PROTECCIÓN DEL AMPLIFICADOR Cortocircuito, circuito abierto, protección térmica, ultrasónica y de RF. Estable en cargas reactivas o no coincidentes. PROTECCIÓN DE CARGA Encendido y apagado de sil


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