Rolls DU30b Audio Ducker with Microphone Preamp

Rolls DU30b Audio Ducker with Microphone Preamp

Rolls DU30b Audio Ducker with Microphone Preamp

B&H # RODU30B MFR # DU30B
Rolls DU30b Audio Ducker with Microphone Preamp

Rolls DU30b Audio Ducker with Microphone Preamp

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Product Highlights

  • For Small Clubs/Restaurants/Stores
  • For Voice Paging Over Backgrounds
  • Easy to Use
  • 2 RCA Inputs for Music
  • XLR Mic Input
  • Mic Level Knob for Volume Control
  • Supplies +12V Phantom Power
  • Microphone Pad Switch
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Rolls DU30b overview

  • 1Description

The easy to use Rolls DU30b Audio Ducker with Microphone Preamp is designed for a small club, restaurant, or store where voice paging is required to be heard over background music.

The unit inputs the music source via a pair of RCA inputs, while the microphone is connected via an XLR input that can supply +12V phantom power. If another source other than voice needs to control the ducking, that can be brought into the unit on additional RCA jacks.

The microphone input has a pad in case the microphone being used has a high output. The sensitivity control of the DU30b sets the threshold at which the microphone will duck the music, and a mic level knob controls the volume of the microphone input.

Audio ducker for small club, restaurant or store
Very easy to use
2 RCA inputs for music, 1 XLR Mic input with level knob for volume control and +12V Phantom Power
Microphone pad switch to temper high-output mic levels
UPC: 675889000306
In the Box
Rolls DU30b Audio Ducker with Microphone Preamp
  • External Power Supply
  • 1 Year Warranty
  • Table of Contents
    • 1Description

    Rolls DU30b specs

    Number of Channels 1
    Inputs 1 x XLR microphone, 2 x RCA coaxial Music In, 2 x RCA coaxial Alt In
    Output 2 x RCA coaxial
    Phantom Power +12V
    Multi Function No
    Gain Range Not Specified by Manufacturer
    Maximum Output Level Not Specified by Manufacturer
    Frequency Response 20Hz to 40kHz
    Noise Noise floor -78dBu
    Dimensions Desktop enclosure
    Specialties A repeating announcement on prerecorded media can be used as a trigger via the "alt input" jacks
    Packaging Info
    Package Weight 1.1 lb
    Box Dimensions (LxWxH) 7.0 x 4.7 x 2.6"

    Rolls DU30b reviews

    DU30b Audio Ducker with Microphone Preamp is rated 4.2 out of 5 by 5.
    Rated 2 out of 5 by from Noisy and disappointing We own a small Rolls audio mixer which is OK; this unit was purchased to use with a portable battery-powered setup for recording audio for video. However, it was just too noisy for us to use. With a regular (dynamic) mic it worked as a ducker (but was rather hissy) but when we used any of our radio lav mics, the resultant noise was dramatic and totally unusable for our purposes. The ducking characteristic was also very brutal, and there were audible artifacts as the mic level approached the ducking threshold. It might be usable in a workplace scenario, but for more demanding audio situations, I couldn't recommend it.
    Date published: 2010-09-21
    Rated 4 out of 5 by from Simple solution for a big problem. I am the audio engineer for a large venue in arkansas. I used two of these in conjunction to automatically control three audio sources. I hooked it all up so that one source has priority over all. When that signal isn't present another signal is let through and so on. One problem I has was that the sensitivity adjustment is a little tricky if you try and fine tune it. For example, one of the sources would keep triggering the duck randomly due to static noise from the device. I took a more exact setting on the sensitivity setting than I would think would be neseccary/
    Date published: 2010-08-14
    Rated 5 out of 5 by from Plug and Play Awesomeness This product does exactly was it's supposed to do. Installation was a breeze. The customer was impressed at the simplicity and effectiveness.
    Date published: 2015-08-31
    Rated 5 out of 5 by from nice bit of kit small and compact and easy to use
    Date published: 2015-08-11
    Rated 5 out of 5 by from This product works great Easy to use and worKS great
    Date published: 2015-09-02
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