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12

RackPack: Vox Ranger

The Eight EQ Bands

Each filter is designed as bell filter with individually optimized band-
widths and boost/cut values. Each filter is regulated by a fader con-
trol. The frequency range around the center frequency can be boosted 
(fader to the right into direction “+”) or can be cut (fader to the left into 
direction “-”) directly.

Here is a short list with examples for setting each band. This list is of 
course not complete or demands general validity—we just want to give 
some suggestions and orientation to start from.

Band 1:

 4kHz Center Frequency  

Boost: improves intelligibility for vocals (chant). 

 

Cut: reduces risk of feedback (live).

Band 2:

 2.8 Hz Center Frequency 

 

Boost: 

gets 

vocals 

up 

front, 

intensifies 

presence, 

improved intelligibility for voices (speech). 

 

Cut: masks wrong intonation, more air in backings.

Band 3:

 1,6 kHz/

Band 4:

 800 Hz/

Band 5:

 560 Hz/

Band 6:

 420 Hz  

The  main  vocal  area  from  about  500  to  2000  Hertz  is  covered  from 
these  four  bands.  Particular  fundamentals  can  be  processed  here. 
Band  3  reaches  up  into  the  presence  area,  Band  6  processes  the 
foundation.

Band 7:

 330 Hz Center Frequency 

 

Boost:  more  warmth,  fuller  sound  (pay  attention  to  larger  dis-
tances to the microphone). 

 

 

 

 

Cut can bring more clarity.

Band 8:

 220 Hz Center Frequency 

 

Boost: “Belly“ of singing voices.  

 

 

Cut can reduce pulpy sounds/improves clarity.

Control Elements

1"44*

7&

&

2

4*

(

0

7-

709

3"/(&3

L

L

L

065165

0/

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°

°

°

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Summary of Contents for Vox Ranger 2718

Page 1: ...Manual Vox Ranger Graphic Equalizer For The Vocal Range RackPack Module Model 2718 1 44 7 2 4 0 7 709 3 3 L L L 065165 0 ...

Page 2: ...pe of Equipment Audio Signal Processor Product RackPack Vox Ranger Model 2718 Compliance Engineer Wolfgang Neumann Testbase EN50081 1 1992 EN50082 1 1992 EN60065 1993 EN61000 3 3 1995 EN60065 2002 EN55013 2001 EN55020 2002 EN61000 3 2 2000 73 23 EWG 93 68 EWG We herewith declare that the construction of the Vox Ranger Model 2718 is in compliance with the standards and regulations mentioned above N...

Page 3: ...sformers Channel Split 9 Control Elements 10 On LED Display 10 OUTPUT Fader 11 The Eight EQ Bands 12 Diagram of Filter Curves 13 EQ Table 14 Operation 16 EQ Principles 16 Technology 17 Bell Filters Passive Filters Advantages of Passive Filters 17 Specifications 18 Option Information on Lundahl Transformers 19 Copy Master Recall Settings 20 Guarantee 21 Content ...

Page 4: ...ut by qualified persons In the light of possible physical damage or injuries any manipulation is at your own risk In order to avoid any residual voltage the device should be disconnected from any power source at least 5 minutes prior to opening it If you handle the device improperly or ignore the manual part of the delivery of the RackPack frame you risk to damage the device or expose yourself to ...

Page 5: ...ine and immediately contact a qualified technician when you think repairs are needed or when moisture or foreign objects may accidentally have gotten in to the housing or in cases when the machine may have fallen and shows any sign of having been damaged This also applies to any situation in which the machine has not been subjected to any of these unusual circumstances but still is not functioning...

Page 6: ...MATION MARK WITHIN A TRIANGLE IS INTENDED TO MAKE YOU AWARE OF IMPORTANT OPERATIONAL ADVICE AND OR WARNINGS THAT MUST BE FOLLOWED BE ESPECIALLY ATTENTIVE TO THESE AND ALWAYS FOLLOW THE ADVICE THEY GIVE The symbol of a lamp directs your attention to explanations of impor tant functions or applications Attention Do not attempt any alterations to this machine without the approval or supervision of SP...

Page 7: ...different frequency ranges do allow to effectively separate instruments in a mix The second characterizing feature follows the idea of a modular design and affects both the filter technology and the user interface Why did we chose a graphic EQ design For a fully parametric EQ with all neces sary controls there would be space for one band on the module front Our graphic EQ offers eight bands a band...

Page 8: ...8 RackPack Vox Ranger Rear Panel Connections Wiring PS JYFS OTFSU 4FOE POWFSUFS 0VUQVU PS JYFS OT 3FUVSO POWFSUFS OQVU IBOOFM 4QMJU 0 6 5 1 6 5 065 1 6 5 0 6 5 1 6 5 065 1 6 5 1 6 5 1 6 5 3BDL1BDL ...

Page 9: ...d Output 1 stages may be transformer balanced if ordered please refer to page 20 for detailed information Otherwise all inputs and outputs are balanced electronically Output 2 cannot be fit ted with a transformer It is actively decoupled and allows for the input signal to be split into two output signals Channel Split The channel split option through Output 2 always provides alterna tives in proce...

Page 10: ... setups to determine immediately whether the Vox Ranger actually receives any signal Overload LED The OVL LED indicates a potential internal overload It begins indicat ing approximately 3dB ahead of any expected overload to leave head room for peak levels Overloads must be avoided to exclude audible distortions The gaining is still perfect in most cases when the OVL LED is illuminating shortly sin...

Page 11: ...ting the output by ear An A B comparison can be made with the ON switch Please note that differences in sound resulting from EQ processing should not influence your loudness judgement when setting the out put level by ear Fader The Vox Ranger module offers nine fader controls The upper eight fad ers control the eight frequency bands the lowest fader controls the output stage All faders are manufac...

Page 12: ...bility for vocals chant Cut reduces risk of feedback live Band 2 2 8 Hz Center Frequency Boost gets vocals up front intensifies presence improved intelligibility for voices speech Cut masks wrong intonation more air in backings Band 3 1 6kHz Band 4 800Hz Band 5 560Hz Band 6 420Hz The main vocal area from about 500 to 2000 Hertz is covered from these four bands Particular fundamentals can be proces...

Page 13: ...ilter Curves Control Elements The diagram shows the different filter characteristics The lower bands have relatively narrow bandwidths for fundamental tones The upper bands have broader bandwidths to process groups of overtones in common ...

Page 14: ...rts kick drum Kick Drum 60 80 more punch Kick Drum 80 100 makes room for bass Kick Drum 90 100 punch assertion on small monitors Kick Drum 250 400 reduces wooden and pulpy sounds Kick Drum 300 500 accentuates cripsy Kick Drum 350 400 reduces cardboard sound Kick Drum 2K 4K emphasizes reduces drumhead kick Snare 140 260 snares sound fuller rounder Snare 200 400 more punch Snare 300 500 softens snar...

Page 15: ...m more clarity Guitar 100 200 resonances 106Hz 212Hz of ac guitars Guitar 180 280 makes guitars fuller more fat GTR Keyb 250 500 less pulp GTR Keyb 300 400 more warmth Guitar 800 1K reduces cheap sound of e guitars GTR Keyb 1 2K 2K reduces dullness metal room for vocals GTR Keyb 2K 3K more less aggressive overexposure Guitar 3K 5K more attack for e and ac guitars Guitar 3K masks badly tuned guitar...

Page 16: ...and is therefore an effec tive alternative to boosting harmonic levels This is a common practice in Rock Pop productions that can be effective in all musical recording genre Boosting fundamental levels Inexperienced audio engineers will often first try to make corrections by boosting fundamentals some thing which in fact should be the last thing one considers Boosting fundamentals typically lowers...

Page 17: ...al signal level Thus a pas sive filter is always followed by an amplifier which is responsible to regain the initial energy reduction Advantages of Passive Filters Typically coil inductance in virtually all active filters is achieved through simulation True passive coil filters on the contrary can only deliver the genuine characteristic sound associated with inductive components Inherent distortio...

Page 18: ...evel 22dBu Outputs Output 1 XLR connection electronically balanced optionally transformer balanced Impedance 600 Ohm bal ca 150 Ohm unbal ca 75 Ohm Max Output Level 22dBu Output 2 XLR connection electronically balanced Impedance 600 Ohm bal ca 150 Ohm unbal ca 75 Ohm Max Output Level 22dBu Control Elements Signal LED SIG 20dBu Overload LED OVL 21dBu Dimensions Weight Height x Width x Depth 132 x 4...

Page 19: ...RackPack Vox Ranger 19 Copy Master Recall Settings 1 44 7 2 4 0 7 709 3 3 L L L 065165 0 Artist Album Title Engineer Track s Group s Date ...

Page 20: ...perience we can recommend Lundahl I O trans formers in any case and their improved operational safety is an advan tage that can not be overestimated in any critical or complex studio broadcast or sound reinforcement installation All SPL products come with a two year manufacturer s guarantee against defects in material or assembly from the date of factory deliv ery Tubes have a guarantee period of ...

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