Montarbo MDI-2U Passive Monitor Controller User Manual
- June 5, 2024
- Montarbo
Table of Contents
Montarbo MDI-2U Passive Monitor Controller
Thank you for purchasing a product created by Montarbo, an Italian company founded in 1962, always at the service of music and professional audio. Montarbo products, original and avant-garde, are designed with the utmost attention to detail and durability. Reliability is in line with the high- quality standards and sensitivity to the environmental impact that distinguishes the company.
The MDI-2U is a powerful, easy-to-use device that combines the features of a high-quality D/A converter (up to 192 kHz – 24 bit) and a DI box in a compact, rugged and lightweight unit. It allows you to send a balanced, high-quality audio signal that is free of noise from your laptop to a mixer, PA system or studio monitor. The headphone’s output allows you to monitor the stereo or mono signal. A plug & play device, PC and Mac compatible, that does not require any drivers.
WARNINGS
- The warnings in this manual must be observed in conjunction with the “User manual – Section 2”. Read the manual before use. Keep this manual close to hand for future reference.
PACKAGE CONTENTS
- 1 x USB Stereo DI Box
- 1 x 2m USB cable
- 1 x User Manual – Section 1
- 1 x User Manual – Section 2
SYSTEM REQUIREMENTS
The unit is automatically recognized on connection.
- Windows: 10, 32-bit or 64-bit, or later.
- Mac OS: no drivers required.
MINIMUM HARDWARE REQUIREMENTS
- Core 2 DUO CPU
- 2.0 USB port
- 4GB RAM
CONTROL PANEL
FRONT PANEL
OUTPUT LEVEL
- Turn this knob clockwise to set the general output level.
ON
- This LED signals that the device is powered on and ready for use.
MONO
- Press this switch to convert the stereo signal to mono.
PHONES
- Connect your headphones to this output via 6.35mm jack. The output level is controlled by the Output Level knob.
USB INPUT
- Connect the USB cable supplied to power the device and enable audio streaming from your computer.
REAR PANEL
XLR OUTPUTS
Connect a mixer, studio monitor or PA system to these outputs using an XLR-M/F cable wired as follows:
- PIN 1 – Ground (earth),
- PIN 2 – Positive (+ or hot),
- PIN 3 – Negative (- or cold).
PAD
- Pressing this switch reduces the output level by -30dB. Use the PAD in situations where there is a very high input signal that is close to distorting.
GROUND
- Pressing this switch lifts pin-1 on both XLR-M outputs.
- Use this function to earth hums and loops.
INSTALLATION ADVICE
No additional drivers are required. Connect the device to the USB port on your computer; it will be automatically recognized.
TECHNICAL SPECIFICATIONS
| Circuit type | D/A converter with balanced outputs |
|---|---|
| Output connections | 2 x XLR-M |
Headphones output on 6.35 mm stereo jack
Controls| Output level, Power ON LED, Mono, PAD, Ground/Lift
Compatibility| Windows 10 or later, Mac OS
Supported formats| WDM, MME, CoreAudio, Direct Sound, WASAPI and .WAV
Sampling frequency| 44.1/48/88.2/96/176.4/192 kHz; 16/24 bit
Frequency response| 20Hz~20kHz (±0.5 dBu)
THD| <0.009%
Dynamic range| 102 dBu
XLR output impedance| 235 Ω
Stereo channel separation| 79 dBu
XLR-M output connectors| Pin 1 Ground, Pin 2 Hot (+), Pin 3 Cold (-)
USB power supply| 380mA
USB connector| Type B
USB format| 2.0
Construction| 1mm metal frame 1.5mm metal cover
Dimensions (W x H x D)| 101 x 38 x 140mm
Weight| 590g
A.E.B. Industriale S.R.L.
- Via Brodolini, 8 – Località Crespellano
- 40053 Valsamoggia – Bologna (ITALIA)
- Tel: +39 051 969870
- Fax: +39 051 969725
- www.montarbo.com