Filtering is very important in a system, a complex filtering is not necessarily synonymous with quality. It is possible to combine active filter and passive filter in one system.
There are two types of passive filters:
- High Pass: the frequencies are removed below. For example a high pass at 2000 Hz passes frequencies above 2000 Hz,
- lowpass: frequencies above is removed from. For example a low pass at 2000 Hz passes frequencies below 2000 Hz
The 2-way crossover is comprised of a qualified filter module for "high pass" (high-pass filter) and a qualified filter module of "going down" (low pass filter). The cutoff frequencies of the two filters modules are generally identical.
3-way passive filters (and more) are composed of multiple filter modules "high pass" and "low-pass", the medium channel (center) composed of a high-pass and low-pass is called " bandpass "(band-pass filter). The filter module "band-pass" is nothing more than the combination of a filter "High Pass" filter and a "low pass".Moreover, the operational amplifiers generate noise. Historically, the first discrete filters ROE (+ RC circuit operational amplifier) appeared in the mid sixties. It should nevertheless expect the seventies, with the first commercial integrated circuit (HIC and DIP) to be revealed the economic interest of this type of filter.
Beyma
€50.67 IT/pair |
4FRFX2R
Pair of passive crossover Beyma RFX3, 3 ways, 900 / 5000 Hz
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.Kartesian
€84.00 IT/piece |
Crossover Kourtisan 4.2
Passive crossover Kartesian for KOURTISAN 4.2 kit, PCB board, MKP capacitor, external dimensions 148 x 83 mm
This crossover is dedicated to the Kourtisane 4.2 speaker kit. It works with Sub120_vHP (or Sub120_vHP-F) and Twt28_vHP. |
Eighteen Sound
€129.02 IT/piece |
12NCX910
2-way passive crossover for 18 Sound 12NCX910, 2000 Hz
XVR12NCX91A
XVR12NCX91A
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B&C Speakers
€53.63 IT/piece |
FB08CX21
2-way crossover for B&C Speakers 8CX21, 2000 Hz, 12 dB/octave
FB08CX21
FB08CX21
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Ciare
€20.25 IT/pair |
CF101
Pair of 1-way high pass crossover, 6000 Hz, 4 ohm, 23 x 61 mm, for tweeters Ciare CT190, CT142, CT198N and CTA195
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Monacor
€11.73 IT/piece |
2-way passive crossover, 8 ohm, 2500 Hz, Monacor DN-1
Filtre passif 2 voies 2500Hz, 60w, pour filtrer une petite enceinte satellite |
B&C Speakers
€64.12 IT/piece |
FB12NCX
2-way crossover for B&C Speakers 12NCX, 1500 Hz, 12 dB/octave
FB12NCX
FB12NCX
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Ciare
€75.33 IT/pair |
CF231
Pair of 2-way crossover, 5000 Hz with 0/-1.5/-3 dB attenuations, 4 ohm, 85 x 130 mm
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