R-DB20 | R-DB20

R-DB20

Art.-Nr.: R-DB20

Royer Labs was formed in 1998 to bring David Royer's unique, modern ribbon microphone designs to the world. When the California based company first opened doors, ribbon mics had been largely forgotten, but the R-121 and SF-12 quickly captured the imagination of recording enthusiasts around the world. This new generation of ribbon microphones proved to be a perfect match to the rise in popularity of digital recording, as engineers rediscovered the warmth, analog feel and smooth sound of ribbons. Today Royer Labs provides a comprehensive range of ribbon microphones for recording, live, and other professional applications, which are popular in recording studios and on stages all around the globe.

Overview

Microphone In-Line Signal Booster

The Royer model R-DB20 is a phantom-powered ribbon and dynamic microphone signal
booster and impedance buffer. It increases the level of passive low-output ribbon and
dynamic microphones with a minimum of distortion or coloration. Designed for professional
applications, the dBooster provides two levels of clean gain boost; 12dB and
20dB, selectable by a front panel switch. The dBooster maintains headroom and gain
regardless of load.

The Class A input circuitry presents a high source impedance to the microphone, which
minimizes loading (damping). This reduces coloration and distortion while at the same
time improving headroom.

By utilizing the 12/20dB gain switch, optimum balance between gain and headroom can
be achieved for a variety of uses.

The low-impedance output of the dBooster is an increased microphone-level signal that can
drive a digital interface directly or a standard microphone preamplifier. It also minimizes signal
loss on long cable runs.

Product Details

Microhon In-Line signal booster
Switchable 12dB/20dB gain
High input impedance, Low output impedance
Rugged case construction
Ultra-low noise performance and Ultra-low distortion
Wide frequency bandwidth (20 Hz bis 20 kHz)
Powered via 48 V phantom power
Class A input stage
Retains sound quality on long cable runs
Provides true electrical isolation
Protects ribbon mics from phantom-power
Perfect for low-volume instruments and vocals

12dB or 20dB switchable

@ 20dB Gain = 0.0015%, -25dBu input signal, 1.3Vp-p output signal, @ 12dB Gain = 0.001%, -6Bu input signal, 3.66Vp-p output signal

@ 20dB setting, < 0.002% @ 800mV output, @ 12dB setting, < 0.005% @ 2.6volts output

20dB setting < 11dBa, 12dB setting < 15dBa (referred to -48dB re. 1V/pa)

20dB setting: 127dB, 12dB setting: 120dB (referred to -48dB re. 1V/pa and 4mV/pa)

20Hz-20kHz +/- 0.25dB

3.6 kOhms

300-Ohms

5mA (min.) 7.5mA (max.)

Balanced XLR

48 V phantom power

92 x 51 x 41.3 mm

170g

R_DB20_datasheet_en