I have X140 speakers that echo badly on my end when using video calling.

SOURCE: logitech x530 surround sound speakers sometimes make noise

Hi Nick
As you talk I remember a spair speakers I have a long time ago, brand Creative 5600, has a bad resistor inside the speaker SB, or board, you also check for bad cable at the back or static.
another thing is your volume control, sometimes if you down a few notch you may ...not feel the hit or beep, but check things first.
good luck

SOURCE: Using headphones with Logitech X-230 speakers

Hi FOG-57
Happy HOlidays!
well, if volume is fixed, you have to see if in the control program for sound, you can disable and use the headphone sound program in windows.
good luck

SOURCE: logitech clearchat pro headset

hello guys,

you have to update your audio card drives and vista updates should be upto date. then follow following options and you could find the solution there.

http://www.focusmp3recorder.com/images/fmr_vista_13.gif

SOURCE: video sound problem

Durring video conferencing with MSN Messenger, I can't hear my friend and he can't hear me. Or I can hear them but they can't hear me. What's wrong? Answer This article applies to the following products:
All Logitech Web Cameras with MSN Messenger Support
This article applies to the following software:
Windows XP
Test the Microphone in Sound Recorder

1. Click "Start," > "Programs" ("All Programs" for Windows XP) > "Accessories" > "Entertainment" > "Sound Recorder."
2. Click the Record button and speak into the microphone of the camera. You should see the green line move, indicating the application is picking up sound.
3. Click the Stop button.
4. Click the Play button. If there is no sound at playback, check to make sure the correct device is selected.
   1. Click "Edit," then "Audio Properties."
   2. Make sure Logitech is listed as the Preferred device for "Sound recording."

If the microphone does not work in Sound Recorder, click here for help in determining the problem with the mic.
While using MSN Messenger it is the messenger program, not the camera software, that negotiates the audio streams between two MSN Messenger Clients. Although we cannot directly support audio issues in MSN Messenger, the following steps have been known to resolve and improve audio issues in MSN Messenger. For further information, please consult the help documents associated with MSN Messenger.
Test Your Networking Router
You can also test to see if your router is causing audio issues by either physically bypassing your router and connecting directly to your cable/DSL modem or by setting up your computer as the DMZ (de-militarized zone). If you are a novice networking user, it is not recommended that you leave your computer in the DMZ state for extended period as that may leave your computer vulnerable to attack. However, you may briefly configure your computer as the DMZ to determine if your network settings are causing the audio issues. For DMZ setup instructions, please consult your router's documentation.
Enable Universal Plug and Play (UPnP) on both Windows XP and Your Router.
If either of the above steps resolves the no audio problem, try the following steps.

1. Open Add or Remove Programs in Control Panel. To open Add or Remove Programs, click Start, point to Settings, click Control Panel, and then double-click Add or Remove Programs.
2. Click Add/Remove Windows Components.
3. In the Components list, select the Networking Services check box, and then click Details.
4. Make sure the Universal Plug and Play box is checked.

Notes: If you used a CD to set up Windows, you will be prompted to insert it into your computer.
If your router does not support UPnP or you still get no audio after enabling UPnP on both Windows XP and your router, you must manually open all UDP ports between 5004 and 65535. This is because the audio streams are sent dynamically using that range of ports. Without a dynamic way to open those ports like UPnP, there is no way for MSN Messenger to successfully negotiate the audio stream. Consult your router's documentation for instructions to manually open these required ports.
If you are still experiencing audio issues within MSN Messenger, and you have verified that the microphone is working in Sound Recorder, contact MSN Messenger Support.


This article covers Accoustic Echo Canncellation (AEC) and how it works.
Answer This article applies to the following products:
QuickCam 10.x and RightSound supported cameras
QuickCam 11.x and RightSound supported cameras
Call Central and RightSound support audio devices
This article applies to the following platforms:
Windows® 2000 Professional
Windows® XP Professional
Windows® XP Home
Windows® Media Center Home
Windows® Vista
Accoustic EchoCancellation (AEC)'s purpose is to prevent sounds from your computer's speakers to be picked up by your microphone. This can be a significant problem with audio or video calling applications where the voices or sounds from other parties of the call is being inadvertently picked up by the microphone and fed back into the call, creating echo and other sound distortions. Without AEC, this echo can detract from the quality of a call and in extreme situations, the echo can degrade the audio experience to the point where the audio is useless.
To prevent this from happening, the AEC component monitors sounds being played by your computer's speakers while monitoring the incoming sound picked up by your computer's microphone. The AEC module takes the outgoing and incoming sound signals and compares them to determine if echo is present. If echo is found, it is subtracted before the audio from the microphone is sent to the requesting application. This will result in the remote party only hearing you speak, without being distracted by hearing their own voice echo back to them.
When enabled, echo is eliminated for the recipient of the audio/video message. For echo free chatting, both parties need to have a RightSound technology enabled web camera that supports the AEC feature.

SOURCE: Logitech x540 speakers- rear speakers distorted on matrix mode

i have the exactly the same problem .. my rear speakers are only supporting the music but not when a singings come in from a song .. and it isnt as loud as my front speakers when it is the same watts ( 2 x 7.4W )