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User Manual for Wohler VMMDA-1 2-Channel HD SD-SDI, AES, and Digital Analog Audio Monitoring Unit Click to enlarge the picture
Contents of the user manual for the Wohler VMMDA-1 2-Channel HD SD-SDI, AES,
- Product category: Rack Mount Monitors Wohler
- Brand: Wohler
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Wohler Rack Mount Monitors
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User manual for the Wohler VMMDA-1 2-Channel HD SD-SDI, AES, contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Wohler product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Wohler user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Wohler product will considerably shorten its lifespan!
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Product description The compact and light VMMDA-1 2-Channel HD/SD-SDI, AES, and Digital / Analog Audio Monitor from Wohler Technologies is a compact and lightweight unit offering full-range fidelity. Two front-firing midrange tweeter speakers and a compact high-performance woofer are arranged in its bi-amp design. The speaker systems are protected against blowout by limiters. The summed bass feature allows for audible detection of out-of-phase conditions.Electronic rather than acoustic cancellation of bass frequencies provides positive audible detection of out-of-phase (reversed polarity) audio feeds. The unit features two 10-segment VU LED bar graph level meters. Fast and averaging phase LEDs give visual alert of out-of-phase conditions. A 3-way toggle switch selects between the analog or digital inputs.Muting may also be activated from a switch remote (sold separately) from the rear panel. An auxiliary analog output of the selected analog or digital source is provided on the rear panel.This VM Series monitoring unit is magnetically shielded to allow interference-free operation. Its lightweight and shallow depth chassis makes it suitable for use in portable and mobile vehicle applications. - Only one rack space high, but produces a powerful 96 dB SPL at 2'
- Electronic power output limiting prevents speaker blowout
- Thorough magnetic shielding allows placement next to video monitors
- Headphone jack with speaker muting
- AES input on balanced Phoenix connector and unbalanced BNC connector
- Selectable termination on AES input
- Balanced stereo analog output of selected source
- Lightweight and shallow-depth chassis
- Internal universal AC mains power supply
- Two 10-segment LED bar graph audio level meters
- Phase and power indication LEDs
- Volume and balance controls (jumper configurable as A volume/B-volume by specifying the option SVC)
- Monitors analog, AES, and SD-SDI or HD-SDI audio sources
- Source selected using a front panel 3-position toggle switch (analog, AES, or SDI)
- One of 8 channel pairs from SDI groups 1 to 4 selectable with front panel rotary switch (when SDI is the selected source)
- LED indicates SDI lock status
- Two analog inputs on Phoenix connectors
- Applications: Suitable for use in VTR bays, mobile production vehicles, teleconferencing installations, multimedia systems, satellite links, cable TV facilities, and on-air radio studios
In the Box Wohler VMMDA-1 2-Channel HD/SD-SDI, AES, and Digital / Analog Audio Monitoring Unit (1 RU) AC Power Cord Limited 1-Year Warranty on Parts & Labor Table of Contents
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Technical parametersWohler VMMDA-1 Specs | Inputs | 2 Analog: mini Phoenix (balanced)
1 AES: mini Phoenix/BNC
1 SDI/HD-SDI: BNC | | Analog Input Impedance | >100 kΩ balanced | | Output | 2 Analog (Selected): mini Phoenix
1 SDI (re-clocked): BNC | | AES/EBU Input Termination | Balanced: 110 Ω
Unbalanced: 75 Ω | | Sampling Rate | Digital Input: 32 to 48 kHz, auto-sensing
SDI Input: 48 kHz | | Analog Input Impedance | Analog Input Impedance: >100 kΩ balanced
For AES Input Impedance
75 Ω Unbalanced: 75 Ω
Balanced: 110 Ω | | Input Level | For full output (volume full on): 0 dBv balanced (analog); 20 dBfs (digital) | | Hum and Noise | Better than -70 dB below full output | | Acoustic Frequency Response | 60 Hz to 16 kHz (± 6 dB) | | Acoustic Value | Maximum: 96 dB SPL at 2.0'(60.9 cm) | | Electrical Distortion | Speaker Outputs: Less than 0.3% at any level below limiting threshold | | Acoustic Distortion | Typically <2% at any level below limiting, 100 Hz to 15 kHz | | Power Supply | Universal 100 to 240 VAC input, UL/ CSA approved | | Level Metering | LED bar graph | | LED Color | Tri-color (red, amber, green) | | Metering Range | 23 dB | | | | Magnetic Shielding | Less than 0.2 gauss on any adjacent surface | | Power Output | For 10 W RMS (4 Ω)
For Left and Right Peak: 14 W | | Power Consumption | 70 W | | Rack Height | 1 RU | | Dimensions | 1.7 x 19.0 x 9.0" (44.5 x 483.0 x 246.0 mm) | | Weight | 6.8 lb (3.1 kg) | | | | Box Dimensions (LxWxH) | 24.0 x 17.0 x 8.0" |
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