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EMX Software Documentation

Before you start installation, make sure you have the followings:
  1. 5.1 sound card. (Note that 7.1 sound card works as well)
  2. Speakers
  3. Virtual cable software
  4. EMX software

Step one: install sound card, driver, and test with the speakers

Follow sound card manufacturer instructions to install the sound card and its driver to your PC.

Make sure all sound card sound enhancement and effects are turned off, for example, the following screen shows Sound Blaster Omni 5.1 Sound Card software the equalizer is disabled. Besides equalizer, you should also turn off all playback effects such as, virtual surround sound, reverb, CMSS, scout mode etc.

After installing the sound card, follow these steps to test it with your speakers:

  1. Connect your speakers, and position them correct. (You may find recommended speakers document (PDF), and speaker positioning guideline on our website.
  2. Open the Windows Sound Control Panel. (Please see Tips 1 below for instruction to do that), select the “Speaker” device of your 5.1 sound card, and click the “Configure” button to test for ensuring these speakers make clear and balanced sound, which means all speakers make a similar level of loudness; adjust volume level when needed. Click cancel to exit.
  3. Select the same “Speaker” device, click the “Properties” button, select “Advanced” tab, choose a 48000 Hz item, and press “OK” to save the configuration. Click Ok to exit the Sound Control Panel.

Tips 1: here are two different ways to open the Windows Sound Control Panel
  • On Windows 10, right click the speaker icon at the system tray in the lower right corner of your screen, select “Open Sound Settings”, maximize the window and click Sound Control Panel on the right hand side.
  • Alternatively, click the Windows icon on the taskbar, type “mmsys.cpl”, press Enter.

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Step two: install a virtual cable software

You may choose to install one of the follwing two virtual cable software:
  1. VB-Cable
  2. Virtual Audio Cable
VB-Audio's VB-Cable is free and good for most users, however the more efficient Virtual Audio Cable resolves jitter problem occurs with some heavily loaded computer, and PCs with entry-level CPU. One-time cost of Virtual Audio Cable software is 30 USD.

We will continue with instructions for VB-Cable. Download and install VB-Cable from VB-Audio official website, VB-Audio is a high end audio software company, it is used to effectively transmit Windows sound to the EMX software in high quality audio format. The VB-Cable software is a donation-ware, you are free to use and donate. To install the software, follow the instructions on official website which are very easy, or watch the first 3 minutes of the video below. The free VB-Cable is good to use, no need VB-Cable A / VB-Cable B. Note that we highly recommend to run the VB-Cable installer as administrator, and reboot after installation, but this is not necessary for Virtual Audio Cable.

After installation open Windows Sound Control Panel, select the “Cable Input” device, click the “Properties” button, select “Advanced” tab, under the section “Default Format” choose a 48000 Hz item, and click OK to save the change. Click the “Set Default” button to make it the “Default Device” and “Default Communication Device”.

Click the “Recording” tab, select the “Cable Output” device, click the “Properties” button, select “Advanced” tab, under the section “Default Format” choose a 48000 Hz item, and click OK to save the change.

Click OK to save and close Sound Control Panel.

For Virtual Audio Cable user, just do the same and the device name for playback and recording are both labelled as “Line 1”.

Step three: install and configure the EMX software

Download and install the EMX software here.

Get a user account; if you have not done so, one month free trial is available, get start here.

  1. Run the EMX software and make sure you are signed out.
  2. Go to the Internal Connections page, see video step 3.2 for instructions.
  3. Play some music, e.g. YouTube music video, so you can see the moving record indicator during EMX configuration. Configure the EMX software, see video Step 3.3 for detailed instructions.

Note that in step 2, in case you see the log-in page that means it blocks the "Internal Connections" page from showing up, just press the cancel button on the log-in page to close it, and try again.

Finally, turn-on and test the sound system:

  1. Adjust volume using the volume control on your sound card, volume control is available on all external 5.1 sound cards.
  2. Log in EMX, and you should hear sound come out of all speakers immediately.
Tips 1:
If you are looking for software volume control, we suggest to use the EarTrumpet software. For internal 5.1 sound cards you need EarTrumpet. EarTrumpet website -

Tips 2:
The first thing you notice about Endpoint Mixing is that each speaker make different sound, and front speaker always makes a sharper sound than the back speaker.

Tips 3:
To make EMX runs during system startup, please follow instructions from Microsoft.

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About the Internal Connections Page

  • The Internal Connections page use virtual cables to show internal connections within the EM processing, you may check sound for each individual speaker by manipulating the green connectors. You can pull a connector off a port, take an end of a connector and connect it over a port or create a new connector simply drag on a port. It just like you have infinite supply of magic connectors as many as you needed. All changes will take effect at real-time, so you can hear the difference. This is useful in case you need to fix configurations or speaker problems. The change is not permanent, just sign out and back in and everything will restore back to original state.


Congratulations! By going through these few steps, now you are able to enjoy Endpoint Mixing with PC audio.

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First, make sure speakers is working properly, you may isolate the speaker and test with a direct audio input. Next, make sure audio cable used between sound card and speaker is good and finally make sure the correct output port is being used, usually sound card port will be labelled as L/R (or FL/FR) which means stereo left/right (or Front left/right in surround terms) which is what you look for with Endpoint Mixing front speaker, a user manual provided by sound card manufacturer will gives you which label to look for or carefully count for the position number for the port you look for on the interface. The same is true for back speaker. If after all these had done and confirmed and still no sound, check the volume, you need to make sure volume on the active speaker, volume you use with an intermediate amplifier (if any), and soft volume control which includes master Windows volume and the Levels tab for the devices you are testing at the Windows Sound Control Panel are loud enough but always starts with lowest audible level to avoid high volume suddenly comes out of your sound system.

Control volume on an input sound device, active speaker, intermediate amplifier (if any), volume controller on sound card, and soft volume controller e.g. EarTrumpt software.  Please make sure you always starts with lowest audible level to avoid high volume suddenly comes out of your sound system.

Increase/decrease volume at the front speaker to increase/decrease high frequency range response, increase/decrease volume at the back speaker to increase/decrease low frequency range response. For 3D applications, loudness lean towards the front enable stronger sense of closer objects and verbal conversations, whereas loudness lean towards the back enable stronger sense of ambient and low frequency objects.

If you see an error message, follow the instructions, there are two type of errors, error related to your account and subscription, error related to your PC and speakers. Common problems includes inactive account, when this happens you need to make sure your account is in active state check your PayPal automatic payment. Another common problem is Sample Rate problem, the system would not work without setting your input and output devices both at 48 KHz. Finally, make sure your speakers and input devices passed all test to ensure they are working properly. And make sure you consult Windows user manual in particular Windows sound system and seek support from your sound card manufacturer if you think there is hardware problem with the sound card.

Check your EMX device settings (Options > Change the audio device settings) and remember the names of your input device and output device. Goes to Windows Sound Control Panel (Click the Windows icon on the taskbar type “mmsys.cpl”) look for the sample rate settings under Advanced tabs of the devices you’ve just identified. Make sure they are both working at 48 KHz and the output devices has at least 6 channels.

This is a known problem with a few sound cards we use with Windows and PC sound card, as far as we know the electrostatic charge causes current spike that make the highly sensitive EMX real-time audio signal processor fail. Restart EMX and try again this will usually fix this problem.

This can happens to PC with heavy loading, incomplete Windows sound system setup, external USB sound card, or two many active audio devices. Restart EMX usually resolved this problem, otherwise stop all PC sound such as music or online video you are watching make sure no App is producing any sound, close the EMX Windows App, open Windows Sound Control Panel to disable the EMX output device and re-enable it for reset, and start EMX. If that still does not fix the problem restart the PC and the problem should be fixed. To avoid future problems, make sure unnecessary background programs are disabled and do not runs as Windows startup, complete the Windows sound system setup particularly follow the instructions to disable all sound devices not used, avoid using USB sound card, and if USB sound card must be used make sure your computer is fast not heavily loaded and unnecessary programs are being closed. Another method is to split input and output devices on two different sound cards each taking a unique role so to ensure the uneven delay time problem commonly found on USB sound cards are being buffered out on two separate sound cards. For advanced user, follow the recommended system tuning guide for digital audio workstation, e.g. Steinberg CuBase will be helpful too. Finally, change EMX to increase audio buffer size, go to Options > Change the audio device settings > click “Show advanced settings” button and choose a larger “Audio buffer size”.

A standard music CD produces 44.1 KHz at 16 bits bit-width for each channel, as it is designed for stereo sound reproduction it means 2 x 44.1 KHz / 16 bits. Endpoint Mixing used its algorithm convert input source to four channels at real-time which means 4 x 48 KHz / 16 bits with 44.1 to 48 resampling. With the help of two layers of speakers (front and back layers) it means it is an order of magnitude increase in sound quality. However, as we are already testing the premium services in our lab, 96 KHz, 192K Hz and 384 KHz increases in sound quality at another levels on scale.

You may use speakers from an integrated 5.1 sound system with component analog input (i.e. 6 separate analog audio RCA inputs), both front and back stereo speakers are being purchased from the same manufacturer with the same model number, or try to match similar power level, sound characters (warmth vs precision and etc.) and design between front and back stereo speakers as much as you can. Another consideration is audible time delay difference, this should rarely happens. But if this is the case, replace one of the two stereo speaker to close the gap. Finally, make sure you place your speakers according to the speaker positioning guideline and do not erroneously patches front sound to back speaker and back sound to the front speaker. Finally, since input signal is providing to the Endpoint Mixing Subwoofer output without alteration (signal is provided this way so active subwoofer could have more freedom to perform own low-pass signal processing), another possible problem is that user erroneously patches subwoofer sound to front and/or back speaker.

Change the EMX input configuration to the line-in device you want to use, and log-in to EMX.

If the devices is not found, make sure your sound card and driver are both installed properly, use test interface provided by sound card manufacturer to confirm. If the device is found on the Windows Sound Control Panel but not functioning properly please contact Microsoft and sound card manufacturer for further assistance.

If the devices is not found, make sure your sound card and driver are both installed properly, use test interface provided by sound card manufacturer to confirm. If the device is found on the Windows Sound Control Panel but not functioning properly please contact Microsoft and sound card manufacturer for further assistance.

Endpoint Mixing Layer 1 sound technology is a 2.2.1 (or 4.1) sound system, meaning 2 front 2 back and 1 subwoofer channels. There is no center channel. Center/SubWoofer (CEN/SubW) port of a 5.1 / 7.1 sound card is being used as subwoofer left and right output. If your active subwoofer has one input channel, usually a single RCA, then either one of these channels can be used to connect with the subwoofer.


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