Jensen Indicators and Controls, PS1220M Remote Bass Control, Control Remoto de Nivel

Indicators and Controls

Power Indicator

The power indicator provides a visual indication that the amplifier is turned on.

Level

The input level control matches the output of your radio to the input of the amplifier. After the installation is complete, make sure the input level control on the amplifier is turned down all the way (counterclockwise or all the way to the left). Play a tape or CD (make sure bass and treble settings or EQ are flat) and turn the volume up slowly until you just start to hear distortion. Back the volume down just a bit. On the amplifier, slowly turn up the input level control (clockwise or to the right) until you just start to hear distortion, and back it down a bit. Now your radio and amplifier levels are matched.

Bass Boost

The Bass Boost is continuously adjustable from 0 to +18dB @ 45Hz. Adjusting the Bass Boost level allows different subwoofer/enclosure combinations to be equalized. Use this control to increase the level of low bass available from your subwoofer/enclosure combination. Ported and Band Pass enclosures should be limited to about +6db to +9dB of boost. Sealed enclosures should be able to accept the full +18dB of boost, if necessary. The full +18dB of boost should be reserved for special applications because misuse of the Bass Boost could damage your subwoofers at high volumes.

Low Pass Filter (LPF)

These controls adjust the crossover point from 40Hz to 200Hz. Typical crossover is between 60Hz and 80Hz for ported and sealed enclosures. Bandpass boxes typically will use a higher crossover setting between 125Hz to 175Hz. Depending on your sub-woofer/box combination the crossover may be set anywhere between 40Hz and 200Hz. Since musical tastes vary, you should play music that you will typically be listening to in your vehicle with the above settings as a starting point and, if necessary, set the crossover by ear.

Protect Indicator

The protect indicator provides a visual indication that a problem exists and the protection circuitry has protected the amplifier by shutting it down. Turn the system off and correct the problem before turning the system on.

Thermal Protection

The amplifier will shut down if its termperature exceeds a safe operating level. The amplifier will remain off until it cools to a safe operating temperature. Exercise care, as the exterior of the amplifier may get uncomfortably hot to the touch before shutting down.

Overload and Short Circuit Protection

The amplifier will shut down if a short circuit condition exists or if electical current demands exceed safe levels.

PS1220M

Remote Bass Control

Remote bass control allows the input level to be adjusted from an alternate location. It can be mounted under-dash or in-dash. When the amplifier is used to drive subwoofers and the low pass crossover is activated, the remote bass control can be used as a “remote bass level control”. This enables you to control the bass level independent from the rest of the system. This is convenient for system tuning and/or when playing many different types of music.

Remote Bass Control

Control Remoto de Nivel

Commande à Distance de Niveau

Control Remoto de Nivel

El control remoto de nivel permite que el nivel de entrada sea ajustado desde una ubicación alterna. El mismo puede ser montado debajo del tablero o en el tablero. Cuando se usa el amplificador para conducir los altavoces de bajos (subwoofers) y la sobremodulación de pasabajos está activada, el control de nivel remoto puede ser usado como un "control de nivel de bajos remoto". Esto le permite controlar el nivel de bajos, independiente del resto del sistema. Esto es conveniente cuando se sintoniza o cuando se pasan diferentes tipos de música.

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