Royer Labs R-DB22 Manual

Royer Labs Mikrofon R-DB22

Læs gratis den danske manual til Royer Labs R-DB22 (2 sider) i kategorien Mikrofon. Denne vejledning er vurderet som hjælpsom af 57 personer og har en gennemsnitlig bedømmelse på 4.7 stjerner ud af 29 anmeldelser. Har du et spørgsmål om Royer Labs R-DB22, eller vil du spørge andre brugere om produktet?

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Royer Labs

Professional Audio Products

dBooster2

Stereo in-line Microphone and DI (Direct Injection) Signal Booster

With the introduction of the original dBooster, low-output passive microphones could be boosted with up

to 20dB of clean signal boost and superior sound quality. The dBooster2 takes that concept to the next

level.

The Royer model R-DB22 is a phantom powered two-channel in-line level booster/buffer for passive low-

output ribbon and dynamic microphones and incorporates a high-impedance Direct Injection input for

guitars and other Hi-Z sources.

An integrated combination input jack accommodates standard 3-Pin microphone XLR inputs and ¼-inch

high-impedance inputs. The dBooster2 is designed for professional applications and provides two levels

of clean boost in both the low-impedance microphone mode; 12dB or 20dB and the high-impedance mode;

0dB (unity) or 8dB, selectable by a front panel switch.

How to set up your dBooster2

NOTE: It is a good idea to make all of your connections before activating phantom power and turning up

your preamp level control!

One of the unique features of the dBooster2 is that each channel of this stereo unit is completely isolated

from the other. They are completely independent. This minimizes the chance of ground loops developing

when used with stereophonic microphones or different independent channels of microphone preamplifiers

and interfaces.

The dBooster2 goes between any non-powered ribbon or dynamic mic, ¼ Hi-Z source and your preamp,

DAW or audio interface. In the mic mode it will provide either 12dB or 20dB of signal boost for low-output

microphones. In the Hi-Z DI (direct injection) mode it will deliver unity gain (0-dB) or +8dB of gain. A

front panel switch establishes the gain setting.

When used for microphones, the microphone is connected to the INPUT of the dBooster2 via a standard

3-conductor XLR microphone cable. In the DI mode the source is connected via a standard two-conductor

¼-inch guitar type cable. The

OUTPUT of the dBooster2 is

connected to any preamplifier, DAW

or interface that is enabled with

phantom power capability.

The dBooster2 is a mic-level device

and not intended to drive line-level

inputs directly. After your

connections are made, apply

phantom-power, and slowly bring up

the preamp level to verify that the

microphone or DI input is passing

signal. To achieve the best

performance from your dBooster2

with minimal noise and distortion at

the preamp, use the lowest gain setting that will provide satisfactory results. The higher gain settings are

best for use with very low-output signal sources or low-gain preamplifiers.

Each application will vary based on the microphone, signal source and preamplifier, so feel free to

experiment and familiarize yourself with the dBooster2 and its capabilities. If you have any questions

regarding the use of this product you can always contact us by visiting our website: royerlabs.com

NOTE:

The dBooster2 will not work with phantom-powered condenser microphones because one of its features is

to block phantom-power from being fed to the microphone. This is a safety feature designed to prevent

possible damage to ribbon microphones that are susceptible to damage as a result of being exposed to

phantom -power.

The combination input jack can be used with either a 3-Pin XLR connector or a ¼-inch guitar type

connector, but not both simultaneously. You can, however, use either channel in the “mic mode” and the

other “DI mode” simultaneously.

The dBooster2 is designed to work with stereophonic microphones without ground loops issues, channel 1

(left input) is connected to the chassis via Pin-1 of the XLR input, while channel 2 (right input) is connected

capacitively to Pin-1 of XLR connector. If you are using the dBooster2 as a monaural device (only one

channel), use channel 1 for best grounding performance in electrically noisy environments.

For microphones, Pin-2 is the in-phase signal and Pin-3 is the out-of-phase signal, with Pin-1 being

GROUND. In the Hi-Z mode the TIP is the signal HOT and the sleeve is signal GROUND.

Circuit Description

The dBooster2 is an electronically sophisticated device. For the microphone input mode, the dBooster2

design starts with a differentially configured input stage consisting of multiple paralleled PNP

semiconductors for low noise performance. In the DI mode, a single-ended FET is configured for the input

buffer. These semiconductor devices run in pure Class A for minimal distortion. The preamp uses a current

feedback mechanism and high-quality, thin-film resistors to further keep noise and distortion low.

The output section utilizes a pair of operational amplifiers that act as output buffers and low impedance

line-drivers. The output stage enables the dBooster2 to drive difficult loads without sacrificing gain or

performance while maintaining excellent headroom. Circuit power is derived from a phantom-powered

source and is fully regulated and decoupled internally, providing clean voltage and current for optimum

circuit operation.

Warranty

The dBooster2 is covered by a one-year bumper to bumper warranty. This warranty covers parts and labor

but does not cover damage as a result of misuse or abuse.

This product was designed and assembled in the U.S.A. from components and materials sourced globally.

Royer Labs

Burbank, CA

818.847.0121

royerlabs.com

Produkt Specifikationer

Mærke:	Royer Labs
Kategori:	Mikrofon
Model:	R-DB22

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