Passive crossover for Multi-room Streaming Amplifier
What is Passive Crossover?
Subwoofer Passive Crossover is an excellent accessory designed specifically for Multi-room Streaming Amplifier setups to drive subwoofer beside stereo speakers.
First of all, a crossover consists of a number of electronic filters that have the function of separating signals that are distributed to the bass, midrange and treble (subwoofer, speakers and tweeters), organizing the signal input to separate it into three different signals, so that each component receives its corresponding signal.
It is a device that can divide an input signal into two or more outputs with different frequency ranges, so that the speakers, tweeters and subwoofers will each have their own frequency range, so that these outside of each designated range will be blocked or dimmed.
First of all, a crossover consists of a number of electronic filters that have the function of separating signals that are distributed to the bass, midrange and treble (subwoofer, speakers and tweeters), organizing the signal input to separate it into three different signals, so that each component receives its corresponding signal.
It is a device that can divide an input signal into two or more outputs with different frequency ranges, so that the speakers, tweeters and subwoofers will each have their own frequency range, so that these outside of each designated range will be blocked or dimmed.
Every speaker system needs a crossover of some kind. The components already come with separate external crossovers, many of them using selectors that allow the output and input signals to be divided in some way by the frequencies.
Therefore, a passive crossover is a device that is located between the sound drivers, (such as subwoofers, speakers and tweeters), and the amplifier, made up of resistors, capacitors and robust coils, with the capacity to manage the high output power of the amplifiers. There are passive crossovers that have a switch for the tweeter level, which allows you to control their volume, in relation to the subwoofer.
The reason why they are called passive is that these devices do not need additional electrical power, since they are fed by the same power of the system to which they are integrated.
What is Active Crossover? And Difference from active crossovers?
The first difference is its location, because an active crossover is between the audio players and the amplifier, so it manages the signal as a low-level preamplifier, with a circuit that cleanly divides the signal, by sending each frequency band in the corresponding address.
An active crossover is typically adjustable, via crossover point selection, and typically contains circuit boosters for the bass in the subwoofer. In addition, it allows you to independently control the volume related to the different audio drivers.
There is another important difference: active crossovers require their own power supply, which is additional to the group of connections in the multi-room streaming amplifier/whole home audio system. Finally, your pocket will also notice that difference, because an active crossover costs up to four times more than a passive one.
Why you need a PC for your multi-room Streaming Amplifier
Basically, every multi-room streaming amplifier /whole home audio system is multiple stereo setups. But some guy wants to incorporate subwoofer into it. So, it is need to divide an input signal into subwoofer frequency range.
Take HOLOWHAS Plus from OpenAudio for example, you can check out this 8-zone (16-channel) output interface; it’s all about full-range amp signals. If you want to hook up a subwoofer, you definitely need to add a passive crossover on the back end.
Some Possible Selection of Passive Crossover for MRSA/WHAS
Here are some potential passive crossover options for MRSA/WHAS setup.There are two options:
Option 1 : Rockwood Passive Subwoofer switch / crossover 150Hz
Description
The Rockwood Passive Subwoofer Switch is a high-quality audio accessory designed to seamlessly integrate and control multiple passive subwoofers in your sound system. It allows easy switching between different subwoofer outputs without the need for complex rewiring, ensuring optimal bass performance and enhanced low-frequency response.
Specifications
- to operate a 2/3-way system and an additional speaker<>
- 50 watts RMS impedance 4 ohms
- Crossover frequency 150 Hz
- Slope 12 dB/oct
- marked connectors
- Dimensions LxHxD approx. 110 x 38 x 67 mm
Option 2: Subwoofer Passive Crossover (CRX-20150SW)
Description
The Subwoofer Passive Crossover (CRX-20150SW) is designed to efficiently separate low frequency signals, providing optimal sound quality. This essential component is a must-have for any audio system, offering precision and accuracy for a truly immersive experience.
Specifications
- HIGH POWER: This passive crossover, the CRX-20150SW, is designed specifically for subwoofers and features a single channel with a high power of 1100 RMS. Its audio crossover filter ensures optimal sound quality and performance
- DURABLE MATERIAL:Experience crystal clear sound with the pure copper coil and excellent transmission capabilities
- LOW FREQUENCY:Ideal for enhancing low frequency sounds, this crossover provides a 150Hz low pass and a woofer frequency range of 20Hz-150Hz. With a 12dB octave slope and 4 Ohms impedance, this crossover is a must-have for any audio expert looking to improve their sound system.
