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Windows 7: Realtek HD detecting rear speaker as side (5.1)

19 Aug 2009   #1

Windows 7
Realtek HD detecting rear speaker as side (5.1)


Ive just recently switched from vista64 to windows 7 64.

The thing is that im using logitech X-540 5.1 speakers but realtek HD is detecting my "rear" speakers as "side" speakers when I select the 5.1 option. Same thing happened in vista too.

The only way round this to select the 7.1 option and disable the "side" speakers and hence I can use "rear". The sound from the "side" speakers then comes from the ones in the front in the testing.

Now the problem is that when I play games/movies in 5.1 it probably detects my system as a 7.1 and some sound will be missing.

So how can I use the 5.1 option and keep my surround speakers as "rear" and not "side".

Thanks in advance,

P.S. Buying a new soundcard isnt an option for me.

My System SpecsSystem Spec

19 Aug 2009   #2

Windows 7 Ultimate 32 & 64 -(Boot Camped Snow Leopard on a Mac Mini)

A true 5.1 speaker system consists of subwoofer, front right and left, and surround right and left (what you may be referring to as "side"). There are no "rear" speakers in a 5.1 system.

A 7.1 system adds rear right and left.

Your Realtek HD is configuring your 5.1 speaker system correctly.

See the Dolby Home Theater Speaker Guide for correct placement of your speakers.

Attached Thumbnails
Realtek HD detecting rear speaker as side (5.1)-5.1-setup.jpg  
My System SpecsSystem Spec
20 Aug 2009   #3

Windows 7

Hmm, come to think about it, Indeed my current speakers arrangement is quite similar to the one in the pic. But all this time I thought that those surround speakers are considered "rear" since they are behind the level of the listener's head (although not directly behind) and not directly on the side.

This pic shows my setup;
brown=seating postion

So, are the surround speakers in this case still "side"?

My System SpecsSystem Spec

21 Aug 2009   #4

Windows 7 Ultimate 32 & 64 -(Boot Camped Snow Leopard on a Mac Mini)

Quote   Quote: Originally Posted by redtilldead View Post
So, are the surround speakers in this case still "side"?

Yes. In fact that setup corresponds pretty closely to the diagram of 5.1 on Wikipedia although a purist might say you need to move your listening position back, or your surround speakers forward. You can compensate for the imbalance by boosting the sides to even out the sound stage.

There's a real good primer on speaker placement at Also HERE.

Attached Images
My System SpecsSystem Spec
22 Aug 2009   #5

Windows 7

So I guess Realtek is doing the right thing in detecting my surround speakers as "side" and not "rear". If that is the case, then problem solved I think.

I cant move my positon around as its a computer setup, but I have indeed bumped up the volume on the "sides".
My System SpecsSystem Spec

 Realtek HD detecting rear speaker as side (5.1)

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