royer SF-24V Скачать руководство пользователя страница 10

thumb and forefinger

 (Image 5)

. Rotate the drum so that the 

desired  voltage  appears  in  the  window  of  the  module 

(Image  6)

.  Gently  push  the  drum  back  into  position  and 

close the door. The door will snap shut when fully closed. It 
is  important  to  note  that  changing  voltage  settings  also 
requires changing the  fuses to  different  values. The  correct 
values  can  be  found  in  the  specifications  section  of  this 
manual.  There  is  more  information  on  this  subject  in  the 
"Power Input Module" section of this manual.

Always connect the  microphone to the  power supply using 
the  seven-pin  cable  before  applying  AC  voltage  to  the 
power  supply.  Connect  the  two  XLR  audio  outputs  of  the 
power  supply  unit  to  a  stereo  or  two-channel  preamplifier. 
The  outputs are  identified  as OUTPUT  1  and  OUTPUT  2. 
The  upper  transducer  is  OUTPUT  1  and  the  lower 
transducer  is OUTPUT  2.  With  the  microphone  positioned 
upright  (logo  facing sound source),  the  UPPER  element  is 
RIGHT  and the LOWER  element is LEFT,  as viewed from 
the observer's perspective.

Since  the SF-24 is active,  its low impedance output allows 
for long cable runs with minimal affect on the microphone’s 
performance.  High-frequency  response  losses  and  noise 
pickup will be minimal even with cable  runs up to several-
hundred feet in length.

NOTE:

There  are no user serviceable parts in the  power supply  or 
microphone.  Leave  all  servicing  of  your  SF-24V  to  a 
qualified technician authorized to service this product.

Amplification Considerations

Almost  any  stereo  microphone  preamplifier (or  pair  of  mono  preamplifiers) with  nominal  gain 
characteristics  will  give  excellent  results with  your  SF-24V  vacuum  tube  ribbon  microphone. 
Unlike  standard  ribbon  microphones,  which  depend  on  a  proper  impedance  match  to  deliver 
optimal  performance,  the input impedance  of your preamplifiers will have minimal affect on the 
SF-24V’s  performance  because  the  ribbon  elements  are  loaded  perfectly  via  the  microphones’ 
internal  electronics.  Careful  consideration  should  be  given  to  the  quality  of  the  microphone 
preamplifier.  Studio  grade  preamplifiers  usually  sound  much  better  than  cheaper  ones. 
Headroom,  noise  floor,  transparency  and  coloration  are  all  factors  to  consider  in  determining 
which  preamplifier  is  suitable  for  your  studio  or  live  applications.  Other  features  are  usually 

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Содержание SF-24V

Страница 1: ...Royer Labs Model SF 24V Vacuum Tube Stereo Ribbon Velocity Microphone Operation Instructions Manual User Guide Made in U S A ...

Страница 2: ... 8 Connecting the SF 24 8 Power Supply Input Module 9 Fuse Replacement 9 Voltage Changeover 9 Amplification Considerations 10 Stereo Microphones and Ground Loops 11 Equalization and Ribbon Microphones 12 Hum Noise and Mic Orientation 12 Microphone Techniques 13 General Tips for Using the Royer SF 24V 13 Specialized Stereo Recording Techniques 16 Classic Blumlein Technique 16 Mid Side M S Technique...

Страница 3: ... this microphone Royer Labs products are manufactured to the highest industrial standards using only the finest materials obtainable Your model SF 24V went though extensive quality control checks before leaving the factory Normal care is all that is required to assure a lifetime of trouble free service Please read this manual thoroughly in order to become familiar with all of the SF 24V s capabili...

Страница 4: ...d by the ROYER logo If however the microphone is suspended upside down the connections to the preamplifier should be reversed since what was the left transducer is now responding to signals from the right and vice versa Your SF 24V is supplied with a dedicated power supply and 7 pin microphone interface cable The output for each channel consists of a chassis mounted 3 pin male XLR connector These ...

Страница 5: ...ffering circuits Power for the tubes is supplied to the microphone from a dedicated AC line operated power supply that connects to the microphone through a 7 pin microphone cable The power supply provides a high voltage source and independent low voltage sources for the vacuum tube s filaments An electronic constant current source automatically compensates for any change in the microphone s cable ...

Страница 6: ...roximately the same distance used for cardioid microphones This method is used to achieve the same ratio of direct to reflected sound 2 In the horizontal plane ribbon microphones do not discriminate against the highs off axis nor do they boost them on axis Therefore several instruments or vocalists can be placed in front of the microphone without favoring the performer in the center of the group S...

Страница 7: ... with minimal pressure There is also a relief button that enables the clutch handle to be repositioned out of the way The shock mount has two orientation slots for easy X Y and M S positioning The X Y slot faces forward and the M S slot is 45º to the left Usage It is important to use the RSM 24 shock mount correctly Making sure that the microphone is inserted properly into the shock mount will min...

Страница 8: ...ements are sensitive to abrupt shocks and blasts of air so be gentle Note If after a time body oils or other contaminants make it difficult to insert or remove the microphone from the shock mount a small amount of talc can be used to lubricate the microphone housing Use talc very sparingly and do not let any of it get into the ribbon transducers as it can compromise the ribbons performance Connect...

Страница 9: ...tly pry the door open Image 3 Be careful not to damage the painted surface of the chassis housing The fuses are located inside two carriers each marked with an arrow pointing to the right These carriers can be pulled out with the tip of a screwdriver blade or a pair of needle nose pliers Image 4 Once the carriers are removed the fuses can be pulled out with your fingers Replacing the fuse carriers...

Страница 10: ...utput allows for long cable runs with minimal affect on the microphone s performance High frequency response losses and noise pickup will be minimal even with cable runs up to several hundred feet in length NOTE There are no user serviceable parts in the power supply or microphone Leave all servicing of your SF 24V to a qualified technician authorized to service this product Amplification Consider...

Страница 11: ...ics would reach an overload condition Due to the high output potential of the SF 24V it is recommended that the microphone preamplifier you pair it with have a switchable pad to prevent the possibility of overloading the preamplifier s input stage electronics Some preamplifiers are more thoughtfully designed than others with a suitable pad that is placed before the preamp s active electronics not ...

Страница 12: ...ibility The reason that ribbon mics take EQ so well is their inherent low self noise unusually smooth frequency response characteristics and freedom from off axis coloration Dialing in high amounts of equalization on condenser or dynamic microphones also means dialing in extra amounts of the microphone s distortion products and self noise garbage that contributes to an unnatural unpleasant sound B...

Страница 13: ...ponding lower level and hence less likely to be objectionable Microphone Techniques General Tips for Using the Royer SF 24V The following are good basic starting places for recording with the SF 24V These positions are known to produce good results but experimentation is the key to getting the most out of your recordings Photographs of many of the following techniques can be found on our website w...

Страница 14: ...um tracks where cymbals need to sizzle you can brighten them by adding a few dB of 10K to 12K Brass Brass records beautifully with ribbon microphones For an overall picture of a brass section within a larger recording session try placing the microphone at a distance of three to eight feet from the section two to three feet above the instrumentalists and angled downward For a solo brass section pos...

Страница 15: ...ou are there realism The rear lobes of the figure 8 elements bring the ambient qualities of the recording environment into the recording adding to the natural feel of the recorded performance Percussion The SF 24V records percussion instruments naturally without upper frequency hype or low end boominess Congas bongos and the like can be recorded with left right stereo effect by positioning the mic...

Страница 16: ... can be summed to mono with no comb filter effects and room reverberation undesirable in mono is cancelled to a surprising degree For the sake of clarity engineers commonly refer to similar stereo miking with cardioid mics as X Y When figure 8 s are used it is more commonly referred to as Blumlein recording Mid Side M S Technique In the early days of stereo radio broadcasting the Mid Side recordin...

Страница 17: ...ement turned all the way down you have just the mid element panned center and giving a mono pickup If the outputs of the mid and side elements are recorded on separate tracks the electrical connections shown in Figure 3 can be made at the mixer outputs and the adjustment of the stereo separation can be done during mixdown rather than during the actual recording Space does not permit a fuller discu...

Страница 18: ...A small amount of denatured alcohol can be used to remove fingerprints and other stains Use WD 40 or mineral oil to protect the finish 6 Keep metal filings away from the microphone at all times The SF 24V s powerful magnets can attract minute ferrous particles into the ribbon transducers compromising the performance 7 When not in use store the microphone in its protective carrying case If the micr...

Страница 19: ... sparingly and apply with a soft cloth Paste wax may also be used for a high luster finish CAUTION Due to the transducer s powerful magnets keep recorded tapes spring wound watches and personal credit cards with magnetic coding away from the microphone to prevent possible damage Features Excellent stereo imaging and separation in one microphone Smooth wide frequency response Vacuum Tube electronic...

Страница 20: ...ure with wire leads Output Connectors Two 3 Pin Male XLR connectors Power Requirements 110 120 220 240 volts AC 50 60HZ see manual Mic Dimensions 270mm X 39mm base X 25mm top 10 5 8 X 1 5 wide base X 1 wide top Microphone Weight 572 grams 20 2 ounces Shipping Weight 21 LBS Finish Dull Satin Nickel Optional finishes Optical Black Chrome and 18K Gold Accessories Camera style carrying case dedicated ...

Страница 21: ...Polar Pattern Frequency Response 21 ...

Страница 22: ...Wiring Diagram 22 ...

Страница 23: ... date of original purchase and for the respective periods specified above Royer Labs agrees to repair at its sole expense all Royer Labs products which are defective in material and workmanship EXCLUSIONS This warranty does not cover the following 1 Defects or damage caused by accident fire flood lightning or other acts of nature 2 Defects or damage caused by abuse misuse negligence or failure to ...

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