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
€111.52 IT/piece |
FBCLX64
2-way crossover pour B&C Speakers 12CLX64, 1700 Hz, 24/12 dB/octave
FBCLX64
FBCLX64
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Monacor
€55.35 IT/piece |
2-way passive crossover, 8 ohm, 2000 Hz, Monacor DN-20
Filtre 2 voies 2000 Hz, 300w, pour la Hi-Fi, idéal avec un HP de grande puissance |
Ciare
€29.16 IT/pair |
CF103
Pair of 1-way high pass crossover, 3000 Hz, 4 ohm, 60 x 90 mm, for tweeter Ciare CT250
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Monacor
€63.60 IT/piece |
2-way passive crossover, 8 ohm, 200 Hz, Monacor DNL-1245
Filtre 2 voies, 8 ohm, pour applications professionnelles, grande puissance, condensateurs film métallisé, pour fréquences et pentes classiques, extensible |
B&C Speakers
€59.94 IT/piece |
FB12CX32
2-way crossover for B&C Speakers 12CX32, 1800 Hz, 12 dB/octave
FB12CX32
FB12CX32
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Ciare
€79.38 IT/pair |
CF301
Pair of 3-way crossover, 800/5000 Hz, 4 ohm, 85 x 130 mm
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Radian
€89.29 IT/piece |
8CRF5130-XO
2-way crossover for Radian for 8CRF5130
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Radian
€88.14 IT/piece |
322/12-2
Crossover for Radian 512/2, 512/2BK, 5212B and 5210, also replacement in RPX/RCX-122P and 122P-V
For use with 512/2, 512/2BBK and 5212B coaxial drivers. Crossed over at 1500Hz. 12dB per octave slope. Replacement crossover for: RPX/RCX-122P and 122P-V models. |