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Table of Contents
Related Manuals for Apex Digital dB Series
Summary of Contents for Apex Digital dB Series
- Page 3 APEX Schoebroekstraat 62 3583 Beringen (Paal) BELGIUM Tel: + 32 (0)11 28 61 91 Fax: + 32 (0)11 25 56 38 email: info@apex-audio.be website: www.apex-audio.be...
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Page 4: Environmental Precaution
Environmental precaution EU Directive 2002/96/EC Remark: This notice applies only to countries within the European Union (EU) and Norway Electrical and electronic equipment may contain hazardous substances for humans and their environment. The “crossed out wheelie bin” symbol present on the device and represen- ted above is there to remind one of the obligation of selective collection of waste. -
Page 5: Safety Advice
SAFETY ADVICE CAUTION: To reduce the risk of electric shock, do not remove the cover, back or front. No user serviceable parts inside. Refer servicing to qualified service personnel. SAFETY ADVICE The lightning flash with arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of un-insulated “dangerous voltages”... - Page 6 technician. Never try to modify the plug so that it will fit ATTENTION the socket. 1) Read instructions - all the safety instructions must be 13) Protection of the power cable - Make sure that the read before the usage of the device. power cable is not damaged in any way, for instance 2) Following the instructions - the instructions must be by other machines that are mounted above or below...
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Page 7: Rear Panel
Introduction Thank you for buying the Apex dBQzero equaliser. Apex is manufacturing equalisers since 1991 and has build up a reputation of outstanding quality. With the dBQzero we have tried to offer a high-quality dual channel graphic equaliser with some extra filters for a very affordable price. In our humble opinion this is probably the best sounding equaliser in its price range. -
Page 8: Front Panel
FRONT PANEL Graphic equaliser section, 30 bands on ISO frequencies Input level control 6/15dB switch with LED indication changes the maximum boost/attenuation of the graphic Eq High Pass Filter frequency selection High Pass Filter on/off switch with LED indication Low Frequency Shelving filter High Frequency Shelving filter Low Frequency Notch filter frequency selection Low Frequency Notch filter on/off switch with LED indication... - Page 9 Before use... Mounting the dBQzero in a rack or flight case The dBQzero can be mounted in a standard 19inch rack or flight case via the four holes in the front panel. Use the correct screws (not delivered) and fix the unit with all four screws. For normal use no extra support is needed, but in more extreme conditions “on the road”...
- Page 10 Using the dBQzero If you are used working with graphic equalisers, using the dBQzero will pose you no problem; you will just be surprised by its accuracy and musicality. However if you like to know the fine details of this equaliser, we invite you to read on. The two channels of the dBQzero are identical so only one channel is described.
- Page 11 All analogue equalisers will introduce some phase shift when used and different equaliser bands will also interact when used together. A graphic equaliser can be considered as a combination of 30 distinct equalisers with fixed centre frequencies and in the case of the dBQzero with a constant Q factor.
- Page 12 The 6/15 switch with LED indication (3) Via this switch you can change the scale (maximum boost/cut) of the graphic EQ. In its normal position (LED out) the scale is +/- 6dB: use this scale for minor adjustments but with great precision.
- Page 13 Low Frequency Shelving Filter (6) The low frequency shelving filter is a filter with a fixed slope and a fixed frequency at 100Hz. Via the rotary control you can adjust the boost/cut of the filter between +/- 9dB. This filter acts in a similar way as the “bass”...
- Page 14 Low Frequency Notch Filter (8) This is a parametric filter with 2 fixed parameters: a fixed cut of 30dB and a fixed Q of 2. You can select the centre frequency of the low frequency notch filter between 20Hz and 1200Hz via the rotary control.
- Page 15 High Frequency Notch Filter (10) This Filter is identical to the Low Frequency Notch Filter except that you can select a higher centre frequency via the rotary control: between 800Hz and 20kHz. High Frequency Notch Filter on/off Switch (11) With this switch you can turn the high frequency notch filter on and off. Standard position is off (LED out).
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Page 16: Technical Specifications
Technical Specifications Line Inputs: Balanced high impedance line level input, 10kOhms On ¼” TRS -jack, XLR and screw terminal connector. Maximum Input Level: +20dB Gain adjustable +/- 10dB via rotary control Line Outputs: Electronically balanced low impedance outputs Maximum Output Level: +21dB into 600 Ohms Noise: 92dB, 20Hz-20kHz, A-weighted Crosstalk:...