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Active crossover

An active filter is a circuit built around an operational amplifier itself usually consists of several bipolar transistors or field effect. It performs filtering and amplification of the signal passing through it. Unlike its passive counterpart, the active filter can optionally have a voltage gain greater than one.

In addition, it has the advantage of being more reliable (the entire production process is automated), less expensive (when produced in large quantities), more compact (the parasites- elements resistors, capacitors, inductances- are thus lessened) and therefore integrated within an integrated circuit. Nevertheless we recognize the active filter several disadvantages like bad behavior at high frequencies (reduction of bandwidth, which tends to limit its use to audio applications), high sensitivity with accuracy the value of the components (that departs usually of the face value of at least 10%), the need for additional power source and limiting the amplitude of signals in the order of the Volt.

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.

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Monacor
DEQ-230

536.14 IT/piece
In stock
Digital 2 x 30 band equalizer, IMG Stageline DEQ-230

Egaliseur stéréo graphique digital paramétrique / graphique 2 x 30 bandes, 2 entrées et 2 sorties (XLR, symétriques), entrée digitale S/PDIF stéréo

Monacor
MEQ-115/SW

169.71 IT/piece
In stock
2-channel graphic equalizer, 2 x 15 frequency, Monacor MEQ-115/SW

Graphic equalizer 2-channel version, 2 x 15 frequency controls in 2/3 octave steps Switchable control range ±6/±12 dB Peak LED Switchable low cut filter Master volume control Bypass switch and ground lift switch Frequency controls with centre click Inputs and outputs each via 2 x XLR and 2 x 6.3 mm jack

Monacor
DA-70157

20.63 IT/piece
Out of stock
USB/RS485 Converter, Monacor DA-70157

Convertisseur USB/RS-485 pour brancher un ordinateur ou portable avec interface USB à des appareils avec interface série RS-485.

Monacor
DRM-880LAN

1,184.48 IT/piece
Out of stock
Digital matrix router Monacor DRM-880LAN, 8in / 8out

Routeur matriciel numérique 8 entrées et 8 sorties (bornier à vis, Mic/Ligne commutable, symétrique), alimentation fantôme +48 V

LD Systems
X 223

Unavailable
LD Systems X223 analogic active crossover, stereo 2 ways / mono 3 ways

Filtre actif 2 voies

LDX223
LDX223

Monacor
DSM-480LAN

Unavailable
DSP Processor, 4in/8out, Monacor DSM-480LAN

Système de gestion numérique de haut-parleurs, 4 entrées et 8 sorties (XLR, symétrique), 2 x entrée numérique S/PDIF, stéréo

Monacor
DSM-260LAN

Unavailable
DSP Processor Monacor DSM-260LAN, 2in / 6out

Système de gestion numérique de haut-parleurs, 2 entrées et 6 sorties (XLR, symétriques)

Monacor
DSM-48LAN

Unavailable
DSP Processor Monacor DSM-48LAN, 4in / 8out

Système de gestion numérique de haut-parleurs, 4 entrées analogiques et 8 sorties analogiques (XLR, symétriques), 1 x entrée digitale AES/DBU,stéréo

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