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.
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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Visaton
€81.15 IT/piece |
HW 3/130 NG - 8 OHM 8 ohm
3-way crossover Visaton HW 3/130, 8 ohm, 300 / 4000 Hz
Rated power 120 W Maximum power 180 W Nominal impedance Z 8 Ohm Skirt selectivity 12 dB / Okt. Turn-over frequency 300 / 4000 Hz Dimensions 155 x 180 mm
5414
5414
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B&C Speakers
€125.46 IT/piece |
FBU128
2-way crossover for B&C Speakers Utility12 design, 12 dB/octave
FBU128
FBU128
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.Kartesian
€74.40 IT/piece |
Crossover Cox120
Passive crossover for Kartesian COX120_VHP, PCB board, silver capacitor, external dimensions 143 x 83 mm
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B&C Speakers
€115.01 IT/piece |
FBCXN88 8 ohm
2-way crossover for B&C Speakers 12CXN88, 14CXN88 and 15CXN88, 1600 Hz, 18/12 dB/octave
FBCXN88
FBCXN88
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Monacor
€34.22 IT/piece |
3-way passive crossover, 8 ohm, 650 / 6000 Hz, Monacor DN-4
Filtre 3 voies 650 / 6000 Hz, 100w, selfs bobinées sur air, condensateurs électrolytiques bipolaires |
Monacor
€61.87 IT/piece |
2-way passive crossover, 8 ohm, 2500 Hz, Monacor DN-1218PAX
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B&C Speakers
€89.22 IT/piece |
FB15CX40
2-way crossover for B&C Speakers 15CX40, 1200 Hz, 6/12 dB/octave
FB15CX40
FB15CX40
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