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REQ-2.2 Resonance Equalizer

Users Manual

REQ-2.2 USERS MANUAL VERSION-4, MAY 2014. CONTENTS COPYRIGHT BUZZ AUDIO LTD 2008.

PO BOX 6677, TE ARO. WELLINGTON, NEW ZEALAND. PH. +64-4-472-3084

www.buzzaudio.com email [email protected]

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Summary of Contents for REQ-2.2

Page 1: ...nce Equalizer Users Manual REQ 2 2 USERS MANUAL VERSION 4 MAY 2014 CONTENTS COPYRIGHT BUZZ AUDIO LTD 2008 PO BOX 6677 TE ARO WELLINGTON NEW ZEALAND PH 64 4 472 3084 www buzzaudio com email management buzzaudio co nz ...

Page 2: ...EQ you find any damage to the unit you should contact your dealer or supplier immediately for advice on what to do We also suggest you retain the original packaging at least during the warranty period in case you need to return the unit for service however we are confident this will not be necessary Contents Page 1 Installation Precautions 3 2 The Mains Input 3 3 Audio Connections 4 4 Overview 5 5...

Page 3: ...ith large unshielded power transformers or switching power supplies 2 The Mains Input As a safety precaution your REQ maybe shipped without a mains fuse fitted Before use you must select the correct mains voltage for your local supply on the rear panel and fit the correct mains fuse type into the fuse draw for that voltage The factory or your dealer may have already set all this up for you but it ...

Page 4: ...ld The REQ will accept both balanced and unbalanced inputs however we do recommend the use of balanced lines where ever possible The REQ has a looping input allowing you to daisy chain it with another device It also has two output connectors paralleled enabling you to feed two separate devices if desired The REQ output is designed to drive balanced loads and each output leg is driven directly If y...

Page 5: ... and the cut boost controls The mastering version utilizes a 23 position stepped attenuator 8dB range for the cut boost control whilst the standard version offers a continuously variable 16dB range with centre detent The REQ uses real chokes and capacitors in a parallel resonant circuit configuration to generate the eq shapes and this is why it is called the Resonance Equaliser Whilst difficult to...

Page 6: ... x2 5 pushbuttons will not function BANDWIDTH low mid and high mid a 12 position switch to set the width of the bell filters ranging from 2 octaves to 0 25 octaves wide See the graphs at the end of this manual for more detail BANDWIDTH SLOPE low and high bands the low and high bands can be switched into shelf mode BELL SHELF switch illuminated and the bandwidth control reverts to a shelf slope con...

Page 7: ...he eq band is completely removed from the signal path PEAK this red LED will illuminate when levels within the REQ circuitry approach 22dBu warning of possible internal overload Levels are monitored at critical points throughout the REQ signal path Master Section Controls HIGH PASS FILTER a 6 position switch to select roll off frequency of the high pass filter HPF The associated ON switches engage...

Page 8: ... To link the functions press and hold down any of the six switches for 4 seconds To un link press and hold down again any of the six switches 6 Specifications Frequency Response Measured with all eq bands ON set flat Saturation and HPF OFF 5Hz to 125kHz 0 2 3dB See graphs for typical eq and HPF frequency response measurements Harmonic Distortion At 10dBu Saturation OFF 100Hz 0 007 1kHz 0 004 10kHz...

Page 9: ...ive materials and or workmanship for a period of 1 year 12 months from the date of sale and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installation and use provided the unit is returned to our factory or duly authorised service centre via prepaid transportation with a copy of the proof of purchase ie sales receipt This wa...

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