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Velleman VDL215EQ Manual
Velleman VDL215EQ Manual

Velleman VDL215EQ Manual

Dual 15 band
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VDL215EQ GRAPHIC EQUALIZER - - DUAL 15 BAND
1. Description
The VDL215EQ is a two-channel, 15-band, 2/3 octave graphic equalizer. The device offers 5% centre frequency
accuracy and frequency control from 25Hz to 16KHz. Special features include the selectable range (6dB or 12dB),
active balanced and unbalanced input/output connectors, adjustable level control, a passive bypass switch, an
overload threshold LED and a ground-lifting switch.
2. Installation
This equalizer is designed to be mounted in a standard 19" equipment rack or in a portable case.
3. Input / Output Connections
This equalizer is equipped with two paralleled input and output connectors. The XLR and ¼" TRS connectors are
actively balanced : pin 2 or the tip is (+), pin 3 or the ring is (-) and pin 1 or the sleeve is ground. For unbalanced
operation, you will need to use pin 2 of the XLR or the tip of the ¼" TRS as Hi (+) and pin 1 of the XLR or the sleeve
of the ¼" TRS as ground.
Balanced output requires using pin 2 of the XLR or the tip of the ¼" TRS as output Hi (+) and using pin 3 of the XLR
or the ring of the ¼" TRS as Lo (-). It does not require the use of pin 1 as the signal's ground. The signal is balanced
when it reaches the output. The ground connection is solely used for protection against interfering signals.
The inputs and outputs can be paralleled by using any of the three connectors. Note : As a rule, the ¼" TRS is used.
4. Signal Levels
Signal levels from –10dBu to +4dBu are considered normal and there is a minimum tolerance of 20dB above these
levels. Do not establish any direct connections between the microphones and the equalizers. Microphones can only
be used with a preamplifier.
5. Chassis Grounding
The rear panel of this unique equalizer is equipped with a ground-lifting switch. Excessive humming or buzzing once
the system has been installed indicates a ground incompatibility between your equalizer and the other equipment in
the system. Several combinations can be attempted. Note : ALWAYS TURN OFF YOUR AMPLIFIERS BEFORE
CHANGING YOUR GROUND. Try different combinations on units equipped with ground-lifting switches or make
sure that all chassis are connected to earth ground through the mounting screws of the front panel rack.
6. Operating instructions
The equalizer is equipped with a bypass switch with a LED indicator. When the bypass switch is ON, the green LED
will also be ON and all equalizer settings will automatically be cancelled. The signal will flow through at unity gain.
Also included is a range selection switch with LED indicators : the 6dB range has a green LED, the 12dB range a
yellow one. There is also a level control potentiometer available that has a range of -∞ to +6dB. Note : In case of
excessive gain, the red peak LED will light up when the signal comes to within 3dB of the clipping level. There is no
problem if this occurs occasionally and the LED only flashes from time to time ; if the LED is lit continuously,
however, the user should readjust the level control. Below are some tips for the initial setup.
VDL215EQ
1
VELLEMAN

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Summary of Contents for Velleman VDL215EQ

  • Page 1 VDL215EQ GRAPHIC EQUALIZER - - DUAL 15 BAND 1. Description The VDL215EQ is a two-channel, 15-band, 2/3 octave graphic equalizer. The device offers 5% centre frequency accuracy and frequency control from 25Hz to 16KHz. Special features include the selectable range (6dB or 12dB), active balanced and unbalanced input/output connectors, adjustable level control, a passive bypass switch, an overload threshold LED and a ground-lifting switch.
  • Page 2: Front Panel Controls

    This red LED will light up if any section of the equalizer is in the clipping mode. Occasional flashing of this LED is acceptable, but if it is lit continuously you should either turn down the equalizer's level controls or reduce the level of the input signal to avoid audible distortion. VDL215EQ VELLEMAN...
  • Page 3: Rear Panel Connectors And Controls

    CAUTION : Never use more than one source at a time for audio connection. SPECIFICATIONS Equalizer : Bands : 2 x 15 Octave ISO Spacing, from 25Hz to 16KHz Type : Constant Q Travel : 20mm (central indentation) for 2 x 15 Range : +/-6dB or +/-12dB (selectable) VDL215EQ VELLEMAN...
  • Page 4 Signal to Noise Ratio : 110dB Below Max. Level (A-weighted) Channel Separation : 60dB (1KHz) Line Voltage : 200-240VAC, 50Hz Size : 48.2cm x 4.4cm x 21cm =19"W x 1.75"H x 8.2"D (1U) Weight : 2.2kg = 4.8lbs VDL215EQ VELLEMAN...
  • Page 5 VDL215EQ – 2 X 15-BANDS GRAFISCHE EQUALIZER 1. Beschrijving De VDL215EQ is een tweekanaals, 15-bands, 2/3 octaaf grafische equalizer. De tuning is nauwkeurig tot op 5% van het midden van de frequentie en het frequentiebereik gaat van 25Hz tot 16KHz. Bijzondere kenmerken : instelbaar regelbereik (6dB of 12dB), actieve symmetrische en asymmetrische ingangs- en uitgangsconnectors, volumeregeling, passieve bypass schakelaar, overbelastingsdrempel LED en een massa-ontkoppelingsschakelaar.
  • Page 6 Deze rode LED brandt wanneer om het even welk onderdeel van de equalizer zich in de piek mode bevindt. Het is niet erg wanneer de LED af en toe eens knippert. Indien de LED echter doorlopend brandt, moet u het volume van de equalizer of het ingangssignaal verminderen om vervorming te vermijden. VDL215EQ VELLEMAN...
  • Page 7 OPGELET : Gebruik nooit meer dan één bron tegelijk voor audio-aansluiting. SPECIFICATIES Equalizer : Banden : 2 x 15 Octaaf ISO Spacing, van 25Hz tot 16KHz Type : Constant Q Hoogte : 20mm (neutrale stand) voor 2 x 15 Bereik : +/-6dB of +/-12dB (selecteerbaar) VDL215EQ VELLEMAN...
  • Page 8 THD + Lawaai : <0.01% (20Hz – 20KHz +4dBm) IM Distorsie (SMPTE) : <0.0005% (+4dBm) S/N Ratio : 110dB onder max. niveau (A-gewogen) Kanaalscheiding : 60dB (1KHz) Voedingsspanning : 200-240VAC, 50Hz Afmetingen : 48,2cm x 4,4cm x 21cm Gewicht 2.2kg VDL215EQ VELLEMAN...
  • Page 9: Installation

    1. Description Le VDL215EQ est un égaliseur graphique 2/3 octave à deux canaux et 2 x quinze bandes. Le réglage donne une précision de 5% par rapport au milieu de la fréquence et la plage de fréquence est de 25Hz à 16KHz.
  • Page 10 L'appareil ou le canal se trouve en mode égaliseur quand la LED verte est OFF, sinon il est dans le mode bypass. Ce mode envoie le signal de l'entrée à la sortie via un circuit-tampon. Le commutateur EQ ON s'utilise pour la comparaison entre, respectivement, le résultat sans et avec égaliseur. VDL215EQ VELLEMAN...
  • Page 11 Le connecteur XLR est un connecteur symétrique qui est branché comme suit : Broche 2 = (+), Broche 3 = (-), Broche 1 = masse. ATTENTION : Utilisez une seule source à la fois pour les connexions audio. VDL215EQ VELLEMAN...
  • Page 12 <0.01% (20Hz – 20KHz +4dBm) Distorsion IM (SMPTE) : <0.0005% (+4dBm) Rapport S/B : 110dB sous niveau max.(pondéré en A) Séparation des canaux : 60dB (1KHz) Tension d'alimentation : 200-240VAC, 50Hz Dimensions : 48,2cm x 4,4cm x 21cm Poids 2.2kg VDL215EQ VELLEMAN...