Apex dBQ-zero 2 x 30 Band Graphic Equaliser

The Apex dBQ-zero is a no-compromise 2-channels graphic equaliser with supplementary filter sections.

dBQ-Zero offers a unprecedented sonic quality and reliability in its price range. On each channel, the 30-band constant-Q graphic section is completed with a filter section consisting of a high-pass filter, high and low shelving equalisers and two notch filters.

dBQ-zero 2 x 30 Band Graphic Equaliser - Front PaneldBQ-zero 2 x 30 Band Graphic Equaliser - Back Panel

Shelving filters add warmth and colour to the mix. A typical application for our frequency adjustable high-pass filter is to remove hum or vibration transmitted by turntables. Notch filters allow fast and easy removal of noise or potential feedback frequencies. Constant-Q design preserves filter bandwidth independently from the amplitude control settings and therefore minimises the adjacent band interaction. Constant-Q reinforces the graphical representation by the front panel faders of the actual frequency response.

Front panel marking and controls are clear and straightforward. Two 10-segment LED level indicators each with dedicated signal and clip LED are available.

To simplify the set-up of the equipment in any situation, on the road as well as in fixed installation, the dBQ-Zero offers XLR, 6,35mm Jack and screw terminals connections, all electronically balanced.

Application

  • sound reinforcement and rental companies
  • installations in pubs, discos, theatres,...
  • musicians
  • DJ's

Features

Key features

  • accessible price point but no-compromise design
  • constant-Q design for a real graphic representation
  • ease of use
  • British sound

Available per channel

  • overall gain control +/- 10dB
  • variable high-pass filters for removing unwanted noise
  • 2 high-Q notch filters with a depth of -30 dB, for feedback suppression
  • high and low shelving filters for smooth frequency adjustment
  • clear 10-segment led level indicator with dedicated signal and clip LED
  • clip indicator driven by a peak sensing circuit giving overload indication at critical points of the equaliser circuit

General features

  • 45 mm precision faders
  • switch-able boost/cut scale +/- 6 dB or +/- 15 dB
  • complete equaliser bypass switch and automatic bypass if there is a power failure
  • universal switch-mode power supply for world wide use

Specifications

dBQ-zero

Input/Output

Line inputs: Electronically balanced high impedance, 10kOhm

Maximum Input Level: +20dB

Gain: adjustable +/- 10dB via rotary control

Line outputs: Electronically balanced low impedance

Maximum Output Level: +21dB into 600 Ohms

Performance

Noise: 92dB, 20Hz - 20kHz, A-weighted

Frequency response: +/- 0,5dB THD: < 0,005%, 20Hz - 20kHz

THD: 0,005%, 20Hz - 20kHz

Frequency Response: +/- 0,5dB 20Hz - 20kHz, all controls flat

Power supply

Auto-detect 110/230V - 50/60Hz, switching power supply

Power switch and fuse on the back panel

Power LED on the front panel

Dimensions (HxWxD)

3U rack Case x 483mm (19-inch) x 133mm (5,25 inch)

Weight

4kg

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