Citronic CEQ215 Dual 15-Band Graphic Equalizer
Citronic
445-923
5015972100448
    Delivery time:2 - 3 Working Days
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  • Description
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  • Specifications

2 x Balanced Line Level inputs XLR and 6.35mm Jack sockets.

2 x Balanced Line Level XLR and 6.35mm Jack output sockets. Bypass switch for EQ comparison.

Low-cut switch each channel.

LED VU meters.

Equalization (or EQ) is so called because its primary function is to accurately “equalize” or balance the frequency profile of a signal for a given application or environment. This is especially noticeable in large rooms, which can emphasise “boominess” in the low frequencies or rooms with soft furnishings, which can absorb a lot of the high frequencies. An equalizer can be set to reduce “boomy” low frequencies or replace lost high frequencies.

At best, human ears can detect sound from 20Hz to 20000Hz (or 20Hz – 20kHz). All natural (and some unnatural) sounds have many harmonics and overtones across the listening spectrum, giving them varying tonal characteristics. We often refer to the lowest frequencies as “Bass” and the highest frequencies as “Treble” but this only describes 2 regions of tone, whereas the listening spectrum could be divided into as many sections as desired in order to give more accurate measurement and manipulation of the sound characteristics.

EQ can also be used as a tool to push a signal forward in a mix or set it further back into the mix by boosting or cutting key mid frequencies, reducing feedback by cutting frequencies which are prone to resonance and boosting specific frequencies to lift certain instruments in a piece of music.

CEQ215 Dual 15-band Graphic EQ

The CEQ215 is a 19" rack mounted dual 15-band graphic equaliser, which allows the adjustment of labelled frequencies via the individual cut/boost faders. Up to 12dB of cut or boost for frequencies ranging from 25Hz to 16kHz for accurate audio spectrum control.

Features

  • Switchable Bypass per channel
  • Switchable Low Cut filter per channel
  • Independent Gain controls
  • ±12dB adjustment per band
  • Balanced or unbalanced signal path
  • LED VU display per channel

Front Panel
1. Independent GAIN controls
2. LOW CUT filter switches and indicators
3. IN/OUT bypass switches and indicators
4. LED VU indicators
5. Frequency sliders
6. Power button

Rear Panel
7. IEC power inlet
8. Mains voltage selector
9. Left & Right output jack sockets
10. Left & Right output XLR connectors
11. Left & Right input XLR connectors
12. Left & Right input jack sockets


Connection

The unit can be used in 2 configurations…

  1. As 2 independent mono graphic equalizers – e.g. for 2 separate

    microphones on channel inserts

  2. As a stereo left & right EQ – e.g. as a main L+R EQ on master

    inserts or between the mixer and amp.

Before connecting to an amplifier or other equipment, turn down all volume controls to avoid loud noises which may cause damage to other equipment. Always switch amplifier power on last in line with volume levels down. Use good quality 6.3mm jack or XLR signal leads to connect the equalizer to allied equipment. The unit can be used as 2 independent mono equalizers (e.g. for 2 microphone channels, requiring specific EQ profiles). Connect mains power via the IEC (ensuring lead is in good condition and the voltage selector is same as the supply voltage) and switch the POWER on.

Operation

Begin with all frequency sliders and the GAIN controls in the centre position (no boost or cut) at 0dB.
Switch the “IN/OUT” button to IN and the respective LED will light.
Adjust each frequency in turn to acquire the best response and reduce any problem frequencies.

Bear in mind that many loudspeakers cannot reproduce frequencies down as far as 20Hz and that the energy from the amplifier at these low frequencies is wasted as heat in the speaker coil. Therefore, the “LOW CUT” may be preferred to be on in sound reinforcement scenarios.

Also, with live PA situations, the crossover point between subs and mid-top cabs can generate phase problems which may be alleviated by reducing frequencies around this point.

Extremely high frequencies are often not feasible for live sound systems, due to the limitations of microphones and loudspeakers (and most people’s ears) and 20kHz may be reduced to save wasted amplifier energy at these high frequencies.

For whichever particular application, experimentation and practice will eventually give the best results from your equalizer.

Power Supply: 230Vac, 50Hz (IEC)
Line Inputs: 2 x XLR/Jack Balanced 10K, Unbalanced 20K
Line Outputs: 2 XLR Balanced 330 ohms
Frequency response: 25Hz to 16kHz
Input Equalizer: 15-band 2/3 octave
Dimensions: 482 x 44 x 138mm