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
€52.65 IT/pair |
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HF201
Pair of 2-way crossover, 5000 Hz 12 dB/octave, 8 ohm, 80 x 120 mm
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Ciare
€109.35 IT/pair |
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HF320
Pair of 3-way crossover, 700 / 3500 Hz 12 dB/octave, 8 ohm, 130 x 130 mm
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Visaton
€27.29 IT/piece |
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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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Radian
€118.33 IT/piece |
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324/12
Crossover for Radian 5312, also replacement in RPX/RCX-112P and 112P-V
For use with 5312 coaxial drivers. Crossed over at 1250Hz and Eq. Replacement crossover for: RPX/RCX-112P and 112P-V models. |
Visaton
€51.26 IT/piece |
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HW 3/120 NG - 8 OHM 8 ohm
3-way crossover Visaton HW 3/120, 8 ohm, 800 / 5000 Hz
Rated power 100 W Maximum power 160 W Nominal impedance Z 8 Ohm Skirt selectivity 12 dB / Okt. Turn-over frequency 800 / 5000 Hz Dimensions 100 x 150 mm
5412
5412
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Monacor
€61.87 IT/piece |
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2-way passive crossover, 8 ohm, 2500 Hz, Monacor DN-1218PAX
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B&C Speakers
€59.24 IT/piece |
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FBCXN36
2-way crossover for B&C Speakers 4CXN36, 5CXN36 and 6CXN36, 1000 Hz, 12/6 dB/octave
FBCXN36
FBCXN36
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Radian
€87.38 IT/piece |
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322/08B
Crossover for Radian 508/2B and 5208B, also replacement in RPX/RCX-108P and 108P-V
For use with 508/2B and 5208B coaxial drivers. Crossed over at 1800Hz. 12dB per octave slope. Replacement crossover for: RPX/RCX-108P and 108P-V models. |