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.
BMS
€62.04 IT/piece |
16 ohm
Passive crossover BMS C16/16, 16 ohm impedance calibration, 2 ways, for BMS 4590, 4592, 4593, 4594, 4595, 4507 and 4508
Crossover for BMS 4590 (16Ohm) BMS 4592 (16Ohm).
BMS-C16/16
BMS-C16/16
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Eminence
€44.09 IT/piece |
PXB:1k6
Crossover Eminence PXB:1K6, 1 way high pass, 1600 Hz
U-PXB1K6
U-PXB1K6
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Ciare
€25.92 IT/pair |
CF102
Pair of 1-way high pass crossover, 8000 Hz, 4 ohm, 23 x 61 mm, for tweeter Ciare CT267
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Eminence
€81.40 IT/piece |
PXB2:1k6
Crossover Eminence PXB2:1K6, 2 ways, 1600 Hz
U-PXB21K6
U-PXB21K6
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B&C Speakers
€66.22 IT/piece |
FB12CXT
2-way crossover for B&C Speakers 12CXT, 1800 Hz, 6/12 dB/octave
FB12CXT
FB12CXT
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B&C Speakers
€89.91 IT/piece |
FB464
2-way crossover for B&C Speakers DCX464 and DCX462, 8 ohm, 3600 Hz, 18/12 dB/octave
FB4648
FB4648
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Ciare
€51.03 IT/pair |
CF300
Pair of 3-way crossover, 1000/6000 Hz, 4 ohm, 85 x 130 mm
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Monacor
€139.23 IT/piece |
3-way passive crossover, 8 ohm, 700 / 3500 Hz, Monacor DN-200
Filtre 3 voies 700 / 3500 Hz, 400w, composants de qualité, pour une utilisation universelle |