User's Manual
Table Of Contents
- TABLE OF CONTENTS
 - Model R-122V Vacuum Tube Ribbon Microphone
 - Introduction
 - Active Ribbon Technology
 - Description
 - Applications
 - Ribbons in the Digital World
 - User Guide
 - Using the R-122V vacuum tube Ribbon Microphone
 - Power Supply Input Module
 - Operation
 - Amplification Considerations
 - The Sweet Spot
 - Finding and Working with the Sweet Spot
 - Proximity Effect and Working Distance
 - The Sound That Is “More Real than Real”
 - Microphone Techniques
 - General Tips for Using the Royer R-122V
 - Stereophonic Microphone Techniques
 - Specialized Recording Techniques
 - Recording on the Back Side of the R-122V
 - Care & Maintenance
 - Troubleshooting
 - Features
 - Electrical Specifications
 - Mechanical Specifications
 - Polar Pattern
 - Frequency Response
 - Warranty
 
Several performers can be grouped at both the front and back of the microphone, with one 
proviso:   since   the   outputs   are   out   of   phase   at   the   front   and   back   of   the   microphone, 
cancellation can   result if,   for  example,   two  tenors  are   placed  at   opposite  sides   at equal 
distances and they are singing in unison, so listen to the feed before committing to it.
3. When using the R-122V to record loud signal sources, placing the microphone slightly off 
axis relative to the signal source (either horizontally or vertically) minimizes the effect of 
high pressure sound levels displacing and possibly damaging the ribbon element.
4. Always provide   adequate  protection  for   your  R-122V,  or  any  ribbon  microphone.  If   the 
microphone is to remain set up on a stand when not in use, place a “mic sock” (supplied with 
every Royer microphone) over it until it is to be used. Do not carry the microphone around 
without placing a mic sock over it. Failure to follow this commonsense practice may yield a 
stretched ribbon and compromised performance.
5. Do  not  allow  the microphone to  be  dropped  on  hard  surfaces  such  as floors or tables  - 
depending on how the mic falls, the ribbon could be stretched. The microphone would likely 
continue   to   operate,   but   performance   could   be   compromised   and   re-ribboning   the 
microphone would be necessary to restore normal operation.
Amplification Considerations
Almost any quality microphone preamplifier with nominal gain characteristics will give excellent 
results with your R-122V vacuum tube ribbon microphone. Unlike standard ribbon microphones 
that require a proper impedance match to deliver optimal performance, the input impedance of 
your preamplifier will have minimal affect on the R-122V’s operational performance because the 
ribbon   element   is   loaded   perfectly   via   the   microphone’s   electronics   package.   However, 
preamplifier impedances below 2,000-ohms will impair headroom.
Careful consideration should be given to the quality of the microphone preamplifier. Studio-
grade   preamplifiers   generally   sound   much   better   than   cheap   ones.   Headroom,   noise   floor, 
transparency and coloration are all factors to consider in determining which preamplifier is most 
suitable for your studio or live sound application. Other features are usually secondary and fall 
into the category of conveniences or interface capabilities (such as digital or optical outputs).
A good preamplifier should sound natural, with no sign of edginess or excessive noise. Vacuum 
tube preamplifiers sound warm, yet wonderfully airy and transparent. Do not expect a vacuum 
tube preamplifier to be as quiet as a solid-state preamp, as electron emissions from tubes tend to 
convey more “thermal” noise than transistors. Tube preamplifier noise is far less of an issue with 
the R-122V than with conventional ribbon microphones because the R-122V’s high output will 
largely override the noise. Transformer coupled designs tend to sound punchy and full-bodied 
and offer the added benefit of true electronic isolation. This greatly enhances their ability to 
interface   with   other   equipment   with   minimal   noise   or   hum.   There   are   many   excellent 
preamplifiers on the market today. Choose one that fits your budget and offers good performance, 
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