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.
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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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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Beyma
€50.67 IT/pair |
4FRFX2R
Pair of passive crossover Beyma RFX3, 3 ways, 900 / 5000 Hz
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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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Ciare
€52.65 IT/pair |
HF201
Pair of 2-way crossover, 5000 Hz 12 dB/octave, 8 ohm, 80 x 120 mm
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Visaton
€27.29 IT/piece |
HW 2/70 NG - 8 OHM 8 ohm
2-way crossover Visaton HW 2/70, 8 ohm, 3000 Hz
Rated power 100 W Maximum power 160 W Nominal impedance Z 8 Ohm Skirt selectivity 12 dB / Okt. Turn-over frequency 3000 Hz Dimensions 100 x 150 mm
5402
5402
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Ciare
€109.35 IT/pair |
HF320
Pair of 3-way crossover, 700 / 3500 Hz 12 dB/octave, 8 ohm, 130 x 130 mm
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Ciare
€59.13 IT/pair |
PF209
Pair of 2-way crossover, 5000 Hz 12 dB/octave, 8 ohm, 80 x 120 mm
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