What is a passive subwoofer?
Passive subwoofer is a non -existent speaker that is responsible for strictly reproducing low frequencies. These speakers are powered by an external amplifier and generally reproduce bass frequencies in the range of 20 - 200 Hertz (Hz) on home sound device and below 100 Hz in professional sound systems. Subwoofers are an integral part of any audio system because they are specially designed to transmit bass frequencies with greater cleanliness than full speakers.
There are two types of subwoofers: active and passive subwoofers. Active subwoofers have a power source built into the speaker cover and can be directly connected to an external supply such as the wall outlet. The passive subwoofer needs an external energy source and is usually driven from the receiver in the home sound system or power amplifier in the professional sound system.
Subwoofers can be installed in different loudspeakers, depending on the purpose of the audio system. EnclosureThe subwoofer in the audio audio system of the car may differ drastically from the cover used to place the subwoofers for the sports stadium. The defense of the subwoofer can also be constructed from a variety of materials including wood or plastic. Building materials used to design the subwoofer cover also play an important role in how bass frequencies resonate to listening audiences.
When using a passive subwoofer, a crossover will be needed to ensure that the audio system works at maximum power. The crossover takes the entire range of sound signal and sends only low frequencies to the subwoofer while sending high and medium frequencies to the speakers. Sound systems use crossovers because subwoofers are designed to transmit only low frequencies, so it is therefore ineffective to send high and medium frequencies to the subwoofer because the CAN do not use these frequencies. Crossover ZajIt grows that the subwoofer only receives frequencies that can transmit to the audience.
In the home sound environment, the passive subwoofer allows smaller speakers to transmit high and medium frequencies, while the subwoofer transmits bass frequencies. This allows the audio system to have a smaller track without sacrificing the quality of lower frequencies. In professional applications, such as a dance club or church, the passive subwoofer allows you to transmit bass frequencies to a larger audience with extremely high volumes.