Rolls DU30b Audio Ducker with Microphone Preamp
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
| 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 |
REVIEW SNAPSHOT®
by PowerReviews(based on 2 reviews)
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REVIEWS
Reviewed by 2 customers
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Displaying reviews 1-2
Pros
Cons
- Noisy
- Poor Sound Quality
Best Uses
- Basic Systems
- Workplace PA
Comments about Rolls DU30b Audio Ducker with Microphone Preamp:
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.
- Was this a gift?:
- No
Pros
- Simple controls and setup
Cons
- Tricky sensitivity
Best Uses
- Application specific
Comments about Rolls DU30b Audio Ducker with Microphone Preamp:
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/
Displaying reviews 1-2
Cables
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- Original: $14.95
- Save: $1.49
- Price: $13.46
What's in the Box
- External Power Supply
- 1 Year Warranty
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