HI,I have a VMX1000USB mixer and I cannot get any sound when plugging a microphone in any of the rear jack sockets, as opposed to the XLR sockets on the top of the unit. Can you please advise what may be the problem? The unit is not very old and I had not tried this method until now. many thanks Steve

Instructions

1. • 1

     Place your mixer in a location that will allow you to hear the sound coming from the speakers clearly. The best placement is opposite the speakers, centered between the left and right pair. Connect the power supply to your mixer.
     

   • 2

     Connect the female end of an XLR cable to a microphone. Run the other end of the cable to your mixing board. Plug the male end into the "Mic" port of an open channel. These channels provide the preamps that will shape the sound characteristics of the microphone signal, processing them for output. Repeat the process for each microphone in your rig
     

     
     

   • 3

     Connect one end of a balanced 1/4-inch cable to the left channel jack labeled "L" found on the "Main Out" panel. Connect another cable to the right channel jack with the "R" label. Connect the opposite end of each cable to the matching left and right inputs on you amplifier.
     

   • 4

     Power on your mixer and amplifier. Test each microphone connected to the mixer for output.
     

   • 5

     Adjust the volume of each microphone channel to create a balanced mix. Use the "EQ" knobs to shape the tone and cut out frequencies that are causing squeal and feedback.
     

   
   Audi Performance Chip
   

You are connecting a NOISY unbalnced line to a balanced input. Buy a DI box and then use an XLR to XLR to the mixer inout and run the MAC into the DI with "ground lifted". You will need to make a resistive mixer between the headphone jack and the DI as well. The headphone jack is STEREO. You COULD try a STEREO 1/8 inch splitter to 1/4 inch left and right cable... you MIGHT get away with that. Right now the left and right amps in the MAC are fighting eachother.

The 1/4 inch should be a TRS (balanced connector) You should find pin 1 of the XLR to the sleeve of the TRS. Pin 2 of the XLR can connect to either the tip or the ring of the TRS and pin 3 of the XLR to the other TRS tip or ring. The line should be an audio interconnect line, balanced. If that doesn't work get back to me as there may be another problem. Make sure all interconnected equipment is powered from the same receptacle or power conditioner !!! Remember these subwoofers are WAY down in frequency so unless you have stuff down in the 50Hz or less range it won't do much. That is LOW...

What is the source of the input signals? These need to be balanced lines and the sources need to be balanced. If you happen to be using condenser mics, you probably haven't turned on the Phantom Power in the mixer. If you are recording from a sound card in the PC, those have a lot of noise and are unbalanced and you have to use DI's with ground lift ahead of this mixer.

This is not hard to do, but it will require some adapters. Hosa company makes adapters to accomplish this. For example, if your Stereo mic has "1/4 inch male phone plugs" Hosa makes and adapter that has 1/4 inch female plug to Male XLR connectors. The Mackie, and just about every mixer in the world these days has Female XLR connectors for it's microphone inputs. So that will handle tha.

I'm not sure what you mean by the "combo" amp. If it has XLR inputs you can use Tip Ring Sleve male output jacks to the output. If your amp as conventional 1/4 inch female input jacks. Than a simple
1/4 inch Male to Male Guitar Cable will work fine. DON'T USE A SPEAKER CABLE as it is uninsulated and you will get 60Hz hum.
I hope this helps,
That looks like a great quality mixer you have!
Happy New Year,
Mark

You can't do any damage... just try plugging into the line... If the mic has enough output it may work. Balanced line mics are best though...

I have a 1222FX and here is how I have it hooked up. I have a cord that has an 1/8" stereo plug on one end and two mono RCA jacks on the other. The 1/8" end goes into my line in on my sound card. (not the microphone in ). The RCA jacks are hooked to two cords that I made up that have a RCA plug on one end and a XLR plug on the other. The XLR plugs are wired so that they are unbalanced. Pin one is ground and pins two and three are soldered to the positive. I used shielded cable and the shield is soldered to negative on the RCA jack but left unconnected on the XLR jack. This prevents hum. You may be able to purchase premade cables but I made my own. The XLR jacks are plugged into the left and right balanced or unbalanced Main output jacks of the mixer. On your computer click Start then Control Panel. Click Sounds and Audio Devices. Make sure that Place Volume in Taskbar is checked. Place the volume slider in about halfway position if there is one. Click Advanced and a control panel should pop up. It will say Play Control at the top. You will want your speaker volume about half way also. Make sure line in is NOT muted (checked ) and is also about half way up. Plug headphones into the mixer and get a good sound with the microphone you are using. If it is a microphone that requires phantom power make sure you turn the power to the mixing board on first, then the phantom power. Do this with the main volume control all the way off. When the mixer has warmed up for a minute or so you can bring the volume up to get a good sound. When you are done recording, make sure you slide the volume down again. Then turn the phantom power switch off and then the main power. This procedure protects your equipment. On the Play Control volume panel on your computer click on Options then Properties. You will see that it is checked for Playback. Check it for recording. Make sure that where it says Show the following volume controls, it has Playback volume and at least Line In checked. Now check the Recording Controls. Where it says Show the following volume controls make sure that at least Line In is checked. Click on O.K. and your Recording Control window will pop up. Make sure that Line In select has a check mark. Slide the volume up until you get a good sound through your computer speakers or your headphones if you have them plugged into the computer. If you accidentally close this window, Click on the speaker symbol in your taskbar at the bottom. You will have to switch between Play Control and Recording Control as before. You didn't mention what software you are using so I advise you to read your manuals carefully. The manual for the mixer has a page with wiring diagrams for cables. Here is a link to a site with lots of good info and an invaluable FREE book that you can download:http://www.recordingreview.com/ I hope this helps.

use the xlr (3 prong) main left and right outputs of the board. get xlr to 1/4 inch cables. one end will be 3 prong, to plug into the mixer, then the other end will be a mono 1/4 inch plug, like a big headphone plug. Then you have to get a dual mono 1/4 inch to stereo 1/8 inch adapter and plug it noto the line in. if there is no lone in, but a microphone jack instead, you will get a mono signal instead of a stereo signal. in this case, just use 1 channel of the mixer, instead of both of the stereo outs, and use a single mono 1/4 inch to mono 1/8 inch adapter.

the xlr to 1/4 inch cables can be purchased at a music store. the 1/4 inch to 1/8 inch adapters will probably need to be purchased at radio shack.

You CANNOT have a stereo set of RCA jacks "wyed" into a single XLR mono input.

The RCA output drivers will "fight" each other. Some things will appear to work, but give poor performance.

You could make a rudimentary passive mixer by putting a series resistor say 1K ohms from each of the RCA's to a common UNBALANCED input of a subwoofer.

The XLR is balanced so that would not really work unless you also have an unbalanced input on the subwoofer.

The right way to do this is to get a cheap two input mixer that has EQ with it and mix your two mains before sending to the subwoofer. You want a little mixer that also has balanced outputs (XLR or TRS) to send to the subwoofer.

UNLESS the subwoofer has EQ in it, you really need to have an EQ in the little mixer so that you don't send high's to the subwoofer... They don't like highs and the sound will suffer.


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