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Peavey PV2600 Инструкция по эксплуатации онлайн [12/40] 8581
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high-power operating levels occur. Then, as temperatures in the amplifier heat sinks increase, the
automatic thermal-sensing circuitry will cause high-speed operation to occur. Depending upon signal
conditions and amp loading, high-speed fan operation may continue or the fan may cycle continuously
between high and low. This situation is quite normal. If cooling is inadequate, however, the amplifier
thermal-sensing system may cause temporary shut down of the unit, indicated by the PWR LEDs on
both channels going dark. Inadequate cooling may be due to preheated air, reduced air flow resulting
from blockage of inlet/outlet ports, severe amplifier overload, or short circuit conditions. Depending
upon the available cooling air, operation should be restored relatively quickly, and the power LEDs on
both channels will again be illuminated. In any event, action should be taken to correct the cause of
the thermal shutdown. If the amplifier is not severely overloaded or shorted and air flow is normal in
and out of the amplifier, then steps should be taken to provide a cooler environment for all the
amplifiers. As a general rule, the cooler electronic equipment is operated, the longer its useful service
life.
In most low to medium-power applications, the amplifier can be mounted in any configuration. It is
desirable that, if at all possible, the power amplifier be located at the top of an equipment stack. This
will prevent possible overheating of sensitive equipment by the hot air rising from the power amplifier.
As a general rule, most home and studio requirements will never cause high-speed fan operation.
High-speed operation may indicate that you have not taken the necessary steps to provide adequate
cooling. Fully closed up in a cabinet, a PV
®
Series power amplifier will have severe cooling problems,
even at low power levels.
BRIDGE MODE
The Bridge mode on stereo amplifiers is often misunderstood relating to actual operation and usage.
In basic terms, when a 2-channel amplifier is operated in the Bridge mode, it is converted into a
single-channel unit with a power rating equal to the sum of the power rating for each channel, at a
load of twice that of the single-channel rating. For example, the PV 1500 is rated at 750 Watts RMS
per channel into 2 Ohms. The Bridge rating is 1500 Watts RMS into 4 Ohms (minimum load). Bridge
mode operation is accomplished by placing the MODE switch in the BRIDGE position, using only the
BRIDGE Speakon
®
connector or the red binding posts for the output, and using the CHANNEL A input.
All CHANNEL B input functions are defeated and serve no purpose now. Bridge mode operation can
be used to drive sound distribution systems in very large public address applications. Another
common use for the Bridge mode is in subwoofer applications where very high power levels are
required to reproduce extremely low frequencies with adequate headroom. Such enclosures usually
contain 2 or 4 loudspeakers to handle the power levels involved. For Bridge mode usage, the
enclosure impedance must be 4 or 8 Ohms — never below 4 Ohms.
DDT
™
Peavey’s patented DDT (Distortion Detection Technique) compression circuit enables the sound
technician to maximize the performance of the amplifier/speaker combination by preventing the power
amplifier from running out of headroom (clipping). This compression system is activated by a unique
circuit that senses signal conditions that might overload the amplifier and activates compression
(reduces the channel gain) when clipping is imminent. The threshold of compression is clipping itself,
and no specific threshold control is used. This technique effectively utilizes every precious watt
available for the power amplifier to reproduce the signal, while at the same time minimizing clipping
and distortion. DDT significantly reduces the potential of loudspeaker degradation and damage, and is
the most effective, automatic, hands-off approach to the problem of power amplifier clipping.
Since PV series power amplifiers use a circuit breaker for overcurrent protection, the DDT
compression system plays an even more important role in continuous performance by preventing
each channel from clipping and overload. Continuous operation at clipping can cause the circuit
breaker to trip, but with the DDT activated, this problem is minimized. For this reason, the DDT
compression system should always be enabled.
Содержание
- Important safety instructions 3
- Save these instructions 3
- Duración por día en horas nivel de sonido dba respuesta lenta 4
- Guarde estas instrucciones 4
- Instrucciones importantes para su seguridad 4
- O menos 115 4
- Gardez ces instructions 5
- Instructions importantes de securite 5
- Bewahren sie diese sicherheitshinweise auf 6
- Oder weniger 115 6
- Wichtige sicherheitshinweise 6
- English 7
- Series professional stereo power amplifier 7
- 2 3 4 4 3 2 1 5 8
- Front panel features 8
- 17 8 13 9
- 6 15 18 9
- Back panel features 9
- Amplifier configurations 13
- Specifications p 15
- Deutsch 16
- Serie professionelle stereo endstufe 16
- 2 3 4 4 3 2 1 5 17
- 17 8 13 18
- 6 15 18 18
- Funktionen auf der rückseite 18
- Technische daten p 23
- Amplificateurs proffessionnels stereo p 24
- Français 24
- Series 24
- 2 3 4 4 3 2 1 5 25
- 17 8 13 26
- 6 15 18 26
- Panneau arriere 26
- Specifications p 30
- Español 31
- Serie de amplificadores profesionales estéreo p 31
- 1 gananacia de entrada db 32
- 2 3 4 4 3 2 1 5 32
- 2 leds de encendido pwr 32
- 3 leds de actividad de señal sig 32
- 4 leds de actividad de ddt 32
- 5 interruptor de corriente 32
- 6 braker 32
- Estos controles son usados para ajustar la ganancia de cada canal determinan lo fuerte que estará cada canal del amplificador con un nivel de entrada dado la ganancia máxima de entrada se consigue en la posición completamente en dirección de las manecillas del reloj 32 db 40x y esta posición también da máximo umbral entre la mezcladora sistema una posición por debajo del máximo resultará en menos ruido del sistema pero no en el umbral mezcladora sistema rotar la perilla completamente en contra de las manecillas del reloj es la posición de apagado off siempre es una buena idea encender cualquier instalación nueva en esta posición para proteger el sistema de parlantes 32
- Funciones del panel frontal 32
- 10 cambio de modo 33
- 17 8 13 33
- 6 15 18 33
- 7 conector para cable de corriente iec 33
- 8 salidas 33
- 9 salidas speakon 33
- Cable de corriente domestico para ee uu 33
- Funciones del panel trasero 33
- 11 interruptor dd 34
- 12 parrilla del ventilador 34
- 13 barrera de entradas 34
- 14 conectador de entrada combo 34
- 15 interruptor de recorte de graves 34
- 16 interruptor del crosover 150 hz este interruptor se usa para activar el crossover de 150 hz del canal correspondiente también es un interruptor de oprimir que requiere una pequeña herramienta para ser activado el pv ofrece dos crossover de 150 hz estos han sido diseñados específicamente para incrementar la respuesta de la mayoría de los parlantes en aplicaciones típicas de bi amplificación en lugar de tener sólo una curva plana de salida estos crossovers usan filtros especiales para cambiar la respuesta y proveer una salida acústicamente plana este tipo de crossover suena más natural que los crossovers de estado variable 34
- Técnica de detección de distorsión 34
- Effective date july 1 1998 39
- Peavey electronics corporation limited warranty 39
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