Amplifier Controls

LFE Level Control: Allows you to adjust the volume of the low-frequency effects/ subwoofer channel to suit your room acoustics or tastes. However, it only affects the LFE signal. If you are not using the LFE input, the LFE level control will not operate.

Configuring Your Receiver: You should choose the “Large” or “Wide” option for the left- and right-front speakers so that full low- frequency information will be sent to the S412P speakers. Make sure that you also configure your receiver for “Subwoofer On” or “LFE On.” In this case, the LFE/Subwoofer signal will consist only of the .1 (bass) channel. The LFE signal level can be adjusted by using the

LFE level on the S412P amplifier panel. For initial setup, you should set the level controls on both speakers at minimum (full counterclockwise rotation). With 5.1 source material playing, advance the level controls on each speaker slowly until the desired amount of effects channel is present. This is a rather subjective adjustment and should be made using a variety of program materials.

If you choose, you can use the “Small” or “Narrow” setting on your receiver. In this case, all of the information below 80Hz will be fed to the LFE/ Subwoofer input on the

S412P. Now the level control operates through- out the entire bass spectrum below 80Hz, not just within the .1 channel portion. This configuration is generally unnecessary but, in certain room-placement conditions, it allows greater bass-level control.

Power Switches: The main “Power” switch is simply marked “On” and “Off.” Turn this switch on to commence operation of the powered amplifier after you have plugged the power cord into an AC outlet. The second switch is labeled “On/Off” and has two positions. Placing the switch in the “Auto” position puts the amplifier in Standby mode. In this mode the speaker will be able to automatically sense an incoming signal, which will trigger it to turn fully on. The speaker will also automatically switch itself back into Standby mode after approximately 10 to 15 minutes have passed without its sensing a signal. We recommend that you leave this switch in the “Auto” position for most applications. If you will be away from home or not using your speakers for an extended period of time, you should turn the speakers off by using the main power switch. The Manual position will bypass the auto-sensing feature and leave the amplifier on until turned off with the main switch or returned to

S412P

LFE IN –

LFE LEVEL

Min Max

GREEN “ON”LED

OFF

POWER ON/OFF

MANUAL

AUTO

OFF

This area is designed to become quite warm

during normal operation.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

“WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.” “AVERTISSEMENT: POUR PRÉVENIR LES RISQUES D’INCENDIE OU DE CHOC ELECTRIQUE, EVITER D’EXPOSER CET APPAREIL A LA PLUIE OU A L’HUMIDITE.”

auto sensing by choosing the auto position.

LED Indicators: When your speaker is turned on but is not receiving a signal, the LEDs glow red to let you know that your speaker is plugged in. When the speaker is receiving a signal, the LEDs glow green. We have provided a convenient “Green ‘On’ LED” switch on the back panel to allow you to shut off the front LEDs should they interfere with your enjoyment of a movie. This switch has no effect when the LEDs are in red mode.

S412P specifications

The JBL S412P is a powerful subwoofer that stands out in the realm of home audio systems. Designed to deliver deep, resonant bass, this model brings a new dimension to your listening experience, whether you're enjoying music, movies, or gaming. With a robust construction and advanced features, the S412P is tailored for both audiophiles and casual listeners.

One of the main features of the JBL S412P is its high-performance 12-inch driver, which is engineered to produce lower frequencies with remarkable clarity and depth. This driver is accompanied by a well-designed enclosure that optimizes the sound produced, minimizing distortion and enhancing the overall output. The subwoofer is capable of delivering an impressive power output, allowing it to fill large rooms with strong, impactful bass that resonates throughout the space.

The S412P incorporates JBL’s advanced technology, including an innovative low-pass filter, which ensures that only the appropriate bass frequencies are played through the subwoofer. This technology allows for a seamless blend of low-end frequencies with the main speaker system, creating a more immersive and cohesive listening experience. Additionally, the subwoofer features adjustable phase control, enabling users to synchronize the bass output with their existing speakers for optimal sound balance.

Another characteristic that sets the S412P apart is its versatile connectivity options. It includes both line-level and speaker-level inputs, making it compatible with various audio sources, from modern AV receivers to older audio systems. This flexibility makes it an easy addition to any home audio setup, so whether you're upgrading an existing system or starting from scratch, the S412P can adapt to your needs.

The design of the JBL S412P is equally noteworthy. With its sleek cabinet finish and robust build quality, it not only performs exceptionally well but also looks great in any living space. Its understated design complements a range of interior styles, making it a stylish yet functional addition to your home audio setup.

Overall, the JBL S412P stands out for its combination of power, advanced technology, and user-friendly features. Whether for movie nights or music listening, it enhances sound quality significantly, making every auditory experience richer and more enjoyable. With its impressive performance capabilities, the S412P is a worthy investment for anyone looking to elevate their audio experience at home.

JBL S412P manual Amplifier Controls

Models: S412P