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
€115.02 IT/pair |
HF310
Pair of 3-way crossover, 300 / 5000 Hz 12 dB/octave, 8 ohm, 130 x 130 mm
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Visaton
€25.34 IT/piece |
HW 2/70 NG - 4 OHM 4 ohm
2-way crossover Visaton HW 2/70, 4 ohm, 3000 Hz
Rated power 100 W Maximum power 160 W Nominal impedance Z 4 Ohm Skirt selectivity 12 dB / Okt. Turn-over frequency 3000 Hz Dimensions 100 x150 mm
5401
5401
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Ciare
€139.32 IT/pair |
PF206
Pair of 2-way crossover, 2400 Hz 12/18 dB/octave, 4 ohm low pass, 8 ohm high pass, 105 x 160 mm
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Visaton
€64.87 IT/piece |
HW 3/130 NG - 4 OHM 4 ohm
3-way crossover Visaton HW 3/130, 4 ohm, 300 / 4000 Hz
Rated power 120 W Maximum power 180 W Nominal impedance Z 4 Ohm Skirt selectivity 12 dB / Okt. Turn-over frequency 300 / 4000 Hz Dimensions 155 x 180 mm
5413
5413
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Monacor
€20.95 IT/piece |
1-way high pass crossover, 5500 Hz, Monacor DNH-185
Filtre passe-haut, mono, pour 8 ?, pour Hi-Fi et sono Pro |
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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Radian
€101.44 IT/piece |
10CRF6430-XO
2-way crossover for Radian for 10CRF6430
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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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