User manual MASTER AUDIO DL BROCHURE

[. . . ] Un filtro de red nos garantiza el cumplimiento de las directivas de compatibilidad electromagnética (EMC). 4REFRIGERACIÓN DEL CIRCUITO4El disipador está formado por hojas delgadas de aluminio. Esta construcción es muy eficiente debido a su elevada área de disipación y su reducción de peso. Si lo comparamos con otros disipadores convencionales, fabricados mediante extrusión, obtendremos un mejor control de la temperatura con un disipador de láminas. [. . . ] Dos conmutadores internos nos permiten seleccionar una actuación rápida o lenta del limitador, según la aplicación deseada. Los sistemas "Full range" y los transductores de alta frecuencia necesitan una actuación rápida, para una buena protección. La posición de actuación lenta es la más recomendable para altavoces de baja frecuencia. 4CORTOCIRCUITO4El circuito de protección controla que los transistores trabajen siempre dentro de su área de trabajo de seguridad (SOA). Los indicadores "Limiter" nos advierten en caso de cortocircuito a la salida de altavoces. Este dispositivo de protección no afecta a la calidad del sonido. 4DC EN LA SALIDA4La posibilidad de que un módulo dañado pueda entregar corriente continua (DC) a la salida y pueda causar daño a los altavoces, es impedido mediante condensadores electrolíticos de salida de alta calidad. First Class Performance and Features. In 1996, MASTER launched the DL Series amplifiers, designed to offer excellent sound and performance at a reasonable price. After five years of success, the second generation has arrived, incorporating improvements in both features and design. MAIN FEATURES 4SOFT START INCORPORATING BREAKER SWITCH4An effective circuit built into all DL Series models prevents current surge when the amplifier is switched on. The "on­off" switch incorporates a consumption limiter or breaker which serves to protect the system by avoiding unreliable mains fuses. A mains filter guarantees the fulfillment of EMC (electromagnetic compatibility) directives. 4SIGNAL / NOISE RATIO >100 dB4A feature all good amplifiers should incorporate. When a DL Series amplifier is not emitting any signal, its silence is its most distinctive feature. 4ELECTRONICALLY BALANCED INPUTS4For immunity to external noise interference. 4HIGH DAMPING FACTOR4The exclusive design of the power unit with no output relays ensures a high damping factor which results in outstanding performance in the low frequency woofers. 4SUBSONIC AND ULTRASONIC FILTER4The use of active filters which limit the amplifier's frequency response within the audible range prevents some serious speaker damages caused by oscillations due to a loose connection or a worn wire. PROTECTION SYSTEMS 4THERMAL PROTECTION4The NTC thermal sensors are located on each heatsink to give a precise temperature control. The limiter also acts as a protection device both varying the output power in relation to the optimal working temperature and at the same time protecting the unit in case of short-circuit. 4TWO OHMS OPERATION4The DL Series are designed to operate at low impedance in musical reproduction. However, it is not advisable to use the amplifier at full power or in fixed installations where the increase in consumption and temperature could trigger the thermal circuit cut-off or breaker switch. 4BRIDGE FUNCTION4A switch located at the rear panel 4SHORT-CIRCUIT4The protection circuit keeps the power allows the amplifier to add the signal from both stereo channels into one. When Bridge is selected it will light up on the front side. transistors working within their Safe Operating Area. The clipping indicator warns us in case of short-circuit at the speaker outputs. This protective device does not affect sound quality. 4PEAK / LIMITER4The careful design of the limiter circuit 4DC OUTPUT4The possibility that a damaged power unit allows a continuous optimization of the amplifier's performance. At any small distortion, the circuit gain is proportionally reduced, keeping distortion-free performance. Considering that distortion is the most common cause of loudspeaker damage, DL amplifiers prevent such problems and thus save money. Two internal switches permit the selection of fast or slow limiter release, depending on the desired application. [. . . ] Therefore there is no forced shutdown. Características Técnicas · Technical Features Respuesta en frecuencia · Frequency response Impedancia de entrada · Input impedance Damping Factor (1KHz) Diafonía · Crosstalk Sensibilidad · Sensitivity Relación Señal / Ruido · Signal / Noise ratio Potencia de salida · Output power (1KHz - 0, 1% THD) Ambos canales · Both channels Un canal · One channel Bridge (Mono) Dimensiones · Size Peso · Weight Especificaciones sujetas a variación sin aviso previo. DIC 2002. 402 602 802 1002 1202 1802 30 Hz - 20 KHz (+/- 1dB) 20 Hz - 30 KHz (- 3dB) 20 Kohm >350 (8 Ohm) 85 dB 1, 225 V (+4 dBm) para máxima potencia · For full power >100 dB 4 Ohm 8 Ohm 4 Ohm 8 Ohm 225 155 245 445 2, 5 A 10 Kg 315 200 330 610 3, 5 A 12 Kg 425 265 460 820 5, 0 A 12 Kg 490 315 545 970 6, 0 A 14 Kg 585 350 600 1150 7, 0 A 15 Kg 885 565 910 1710 10 A 3U. 19" Rack All specifications and features are subject to change without prior notice. [. . . ]