DMX-4 USB Mixer User Manual
DMX-4 USB Mixer User Manual Antex Electronics Corporation 19160 Van Ness Avenue Torrance, California 90501 www.antex.com Copyright © 2008 Antex Electronics Corporation. All Rights Reserved. No portion of this manual may be reproduced without prior written consent from Antex Electronics. Part number 9000-2489-7006 Rev B. FCC Compliance Statement for United States Users This equipment has been tested and found to comply with the limits for a Class B device, pursuant to Part 15 of the FCC Rules.
DMX-4 USB Mixer User Manual Attachments – Do not use attachments not recommended by the manufacturer as they may cause hazards. Water and Moisture – Do not use this product near water – for example near a bathtub, wash bowl, kitchen sink, out in the rain or in a room where moisture is likely to occur. Accessories – Do not place on an unstable surface (cart table or tripod) where tipping is a possibility. Ventilation – Install unit in well ventilated area where self generated heat may escape.
DMX-4 USB Mixer User Manual inside. Refer all servicing to qualified service personnel. A product and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the product and cart combination to overturn. Damage Requiring Service – Unplug this product from the wall outlet and refer servicing to a qualified service person under the following conditions: a. When the power-supply cord or plug is damaged. b.
DMX-4 USB Mixer User Manual Safety Check – Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition. Heat – The product shall be situated away from sources such as radiators, heat resistors, heat registers, stoves, or amplifier that produce heat.
DMX-4 USB Mixer User Manual General description: The DMX-4 is a 4 channel microphone preamplifier with 4 analog to digital converters (A/D). The DMX-4 connects to a PC via a USB 2.0 connection so that audio can be recorded onto the PC’s hard drive. There are 2 configurable monitor outputs, which can be independently set to be a mix of any combination of the 4 input channels. The monitor outputs can be used to connect to a PA system or for video/teleconferencing.
DMX-4 USB Mixer User Manual fixed gain of 0dB in “line” setting. Inputs 3 and 4 have an adjustable gain of –8 to +31.5dB in “line” setting. (Although the circuitry is capable of a lower gain setting than –8dB, the setting is limited in the Antex Mixer Program to –8dB so that it is not possible for the analog circuitry to go into clipping before the A/D.) The monitor outputs are single ended RCA jacks, capable of a 2VRMS signal (+6dBV). The level adjustment range is from –102dB to +25.5dB.
DMX-4 USB Mixer User Manual What’s a ”dB” and why should I care? Throughout this manual, the term “dB” is used. This stands for decibel. You may think, “but I just want to record a legal proceeding. I don’t want to be a recording engineer. Why should I care about this?” Although dB’s may seem complicated mathematically: dB = 20 x log(signal level/reference signal level) Using dB’s gives you a better feel for how changing the volume will sound to your ears.
DMX-4 USB Mixer User Manual check first if you have this on your computer already, click the “Start” button on the lower left of your computer screen. Click “Control Panel”, then “Add or Remove Programs”. When the program list is populated, scroll down and see if there is “Microsoft .NET Framework 2.0”. If not, open Internet Explorer and go to : http://www.microsoft.com/downloads/details.asp x?displaylang=en&FamilyID=0856eacb-43624b0d-8edd-aab15c5e04f5 (Or, you can go to http://microsoft.com and type “.
DMX-4 USB Mixer User Manual Enter the User Name and Organization, click “Next”.
DMX-4 USB Mixer User Manual Unless you need to change the destination folder, click “Next”. The next dialog box will say “Ready to Install the Program”. Click “Install”. After the program has been installed, the dialog box will say “InstallShield Wizard Completed”. Click “Finish”.
DMX-4 USB Mixer User Manual Make sure either the USB cable is unplugged, or power is removed from the DMX-4. Then click “OK”. If you see a dialog box like the one above, click “Continue Anyway”.
DMX-4 USB Mixer User Manual Make sure the USB cable is plugged in and the DMX-4 is powered up. Click “OK”. Click the “No, not this time” option (this is NOT the default), then click “Next”.
DMX-4 USB Mixer User Manual The “Install the software automatically (Recommended)” should be selected. Click “Next”. After the driver is loaded, click “Finish”.
DMX-4 USB Mixer User Manual The New Hardware Wizard will open again, this time to load the audio driver. Select the “No, not this time” option (this is NOT the default), then click “Next”. The “Install the software automatically (Recommended)” option should be selected. Then click “Next”.
DMX-4 USB Mixer User Manual After the driver has loaded, click “Finish”. If you get a message asking if you want to restart your computer, click “Yes”. After the computer restarts, the installation is complete. There should be a shortcut on your desktop for the Antex Mixer program.
DMX-4 USB Mixer User Manual Installing the Software - Vista Go to www.antex.com and download the latest software driver for the DMX-4. The installation process is fairly straightforward, using the Installshield. Run the “Setup.exe” program. The first dialog box will say “Preparing to Install…” On the second dialog box, click “Next”. Enter the User Name and Organization, click “Next”.
DMX-4 USB Mixer User Manual Click “Change” to change the destination folder, otherwise, click “Next”. The next dialog box will say “Ready to Install the Program”. Click “Install”. After the program is installed, a dialog box will appear that says “InstallShield Wizard Completed”. Click “Finish”.
DMX-4 USB Mixer User Manual Make sure either the USB cable is unplugged, or power is removed from the DMX-4. Then click “OK”. Click “Install this driver software anyway”.
DMX-4 USB Mixer User Manual The same dialog box will appear when the second driver is loaded. Click “Install this driver software anyway”. Make sure the USB cable is plugged in and the power is switched on. Click “OK”.
DMX-4 USB Mixer User Manual The installation is now complete. Click “Close”. Connections Power Adapter Select the proper AC plug for your country and snap it on to the wall adapter. The adapter adjusts automatically to your AC voltage, provided it is in the range of 100 to 240 VAC. Do NOT use above 240 VAC. The DMX-4 can also be powered from any DC source from +5 to +15VDC. This includes battery packs or the “cigarette lighter” of an automobile.
DMX-4 USB Mixer User Manual USB Connection The USB specification limits the length of the USB cable to 5 meters (about 16 feet), therefore the DMX-4 should be placed near the computer. The cable supplied is 6 feet long. The USB port on the computer must be USB 2.0 or higher (“high speed”). The device will not work on USB 1.1. Plug directly into one of the computer’s USB ports. Do not go through a hub. Note that the USB cable plugs into the DMX-4 with the beveled side (and the molded USB logo) facing down.
DMX-4 USB Mixer User Manual connected to the DMX-4. Note that inputs 1 and 2 do not have gain adjustments in Line setting, the gain is fixed at 0dB. If the line level device has an output level control, this can be used to adjust the recording level. If the device does not have an output level control, then it would be better to connect it to inputs 3 or 4, which do have gain adjustment in Line setting. To connect unbalanced (single ended) devices, use an appropriate cable, such as XLR male to RCA male.
DMX-4 USB Mixer User Manual typically receive a mix of all inputs except him or herself.
DMX-4 USB Mixer User Manual Using the Antex Mixer Program 24
DMX-4 USB Mixer User Manual Adjusting the Recording Level Having the proper recording level is essential to making good, intelligible recordings. If the level is too low, the recording will contain a lot of hiss when it is played back loud enough to hear. If the level is set too high, loud sounds or speech will “clip” and the sound will be distorted. Clipping occurs when the level of the signal being digitized exceeds the maximum level of the analog to digital converter.
DMX-4 USB Mixer User Manual Monitor Mix Matrix Any input may be routed to either or both of the monitor outputs. This is done by clicking on the monitor number buttons associated with each input, using the Antex Mixer Program. Each input has a button for monitor 1 and monitor 2. Click on the button with the mouse to toggle it on or off; blue means on, gray means off. Phantom Power Phantom power is required for condenser microphones.
DMX-4 USB Mixer User Manual is done digitally in your PC, and not in the DMX-4 circuitry. When “Line” is selected, the gain is fixed at 0dB for inputs 1 and 2. If you attempt to move the slider with the mouse, it will snap back. Inputs 3 and 4 do have a gain adjustment from –8dB to +31.5dB in “Line” setting. Input and Monitor Labels There are text boxes for each Input channel at the top of the Antex Mixer Program. There are also text boxes for the Monitor channels.
+ LINE = 0dB LINE = -8 -> 31.5dB MIC = 10 -> 65dB MIC = 0dB - CHANNEL 4 A/D CHANNEL 3 A/D CHANNEL 2 A/D CHANNEL 1 A/D A/D CLIPPING LEVEL = +6dBV LINE = 0dB LINE = -8 -> 31.5dB MIC = 10 -> 65dB MIC = 0dB - + J4 LINE = 0dB MIC = 10 -> 65dB - + J3 LINE = 0dB MIC = 10 -> 65dB - + J2 J1 Block Diagram USB ENGINE USB 2.
1 2 3 4 + - + - CHANNEL CHANNEL CHANNEL CHANNEL -102 -> 25.5dB -102 -> 25.
DMX-4 USB Mixer User Manual Specifications: Inputs: Number Connector Type Gain adjustment: Channels 1 & 2, (mic setting) Channels 1 & 2, (line setting) Channels 3 & 4, (mic setting) Channels 3 & 4, (line setting) Clipping level Input impedance Phantom power 4 XLR Transformerless balanced 10 to 85dB, 1dB steps 0 dB, fixed 10 to 85dB, 1dB steps -8 to 31.5dB +6dBV – gain setting (note 1) 2K 14VDC, 1K series resistor each line Note 1.
DMX-4 USB Mixer User Manual Gain adjustment THD+N -102 to +25.5dB -84dB (note 2) Note 2. A weighted. Test conditions: Test signal of – 30dBV amplitude input into microphone input. Input gain slider set to +30dB, Monitor gain slider set to 0dB. A/D converters: Type Sample Rates THD+N (-30dBV input) THD+N (-60dBV input) Cirris Logic CS5361, 24 bit 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, and 48KHz 90dB (Note 3) 65dB (Note 3) Note 3. A weighted.
DMX-4 USB Mixer User Manual Technical Assistance Technical assistance with this product is available from Antex via: email: asupport@antex.com Web: www.antex.
DMX-4 USB Mixer User Manual EVENT, SHALL THE COMPANY’S LIABILITY EXCEED THE PURCHASE PRICE PAID BY PURCHASER FOR THE PRODUCT. This Warranty is in lieu of all other express warranties or liabilities. ANY IMPLIED WARRANTIES, INCLUDING AN IMPLIED WARRANTY OF MERCHANTABILITY, SHALL BE LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY. ANY ACTION FOR BREACH OF ANY WARRANTY HEREUNDER INCLUDING ANY IMPLED WARRANTY OF MERCHANTABILITY MUST BE BROUGHT WITHIN A PERIOD OF 12 MONTHS FROM DATE OF ORIGINAL PURCHASE.
