Audio output Voice comes from the front  left & right speakers and the center speaker all at the same time.  Used to be that voice came mostly from the center speaker and other sounds from the front left & right speakers.

Most voice tracks come through the center channel. If you don't have a center speaker hooked up, then turn off or change the surround mode so that the player will put the voice tracks back to the front speakers.

go to audio set up and configure the system for 5.1 or higher sound output.then only all the speakers ll work

Radio C1
Pin

Wire Color

Circuit No.

Function
1
RD/WH
340
Battery Positive Voltage
2
TN
201
Left Front Speaker Output (+) (UQ3)
TN
511
Left Front Low Level Audio Signal (+) (UQA/UQS)
3
L-GN
200
Right Front Speaker Output (+) (UQ3)
L-GN/WH
512
Right Front Low Level Audio Signal (+) (UQA/UQS)
4
PK
5149
Voice Recognition Audio Signal (UE1 w/U3R/U3U/UVB)
5
PK/BK
5152
Low Reference (UE1)
6
WH
7066
Entertainment Remote Enable Signal
7
YE
6817
LED Backlight Dimming Control
8
BK
2550
Ground
9
GY
118
Left Front Speaker Output (-) (UQ3)
D-GN
1947
Left Front Low Level Audio Signal (-) (UQA/UQS)
10
D-GN
117
Right Front Speaker Output (-) (UQ3)
OG/BK
1546
Front Low Level Audio Signal (-) (UQA/UQS)
11
BARE
2011
Drain Wire (UQA/UQS)
12
--
--
Not Used
13
D-GN
5060
Low Speed GMLAN Serial Data
14
--
--
Not Used

Do you have a center channel speaker hooked up? Most voice tracks come through the center channel

voice only comes out thru the front speaker, if you hook up amp to rear rca, change to fronts. also speaker outputs, too. btw, did you turn on the voice/volume at the menu??

Hey ajn1n1 we need to fine where the tinnyness is coming from Lets do a test shall we,

hook up your voice matched polks to your front left and right speaker outputs on your amp to see how they sound as mains. if you hear tinny then its the speakers. sometimes speaker need to be broken in a bit.

hook up your main front left and right speakers to your rear outputs. if you hear the tinnyness then its the output of that channel on the amp or a setting. Newer amps let you change speaker sizes in the menu so that it can change over the crossover for that channel.

Just wire one voice coil each into left and right rear respectively, in series with the original rears or if this is too quiet, wire both voice coils in parallel together and connect as per original single coil unit.

As they are 4ohms each they can simply be connected as simple speakers on each rear channel output, since thats exactly what they are, capacitors are used inside to make them react to bass frequencies only. Wiring them up is no different to wiring up a pair of 6x9's.

Check your "main menu" settings. If you are not using a center channel you need to go into "speaker settings" toggle to "center channel" and select "none" If that's not what your question is, post a comment with some more detail and I will gladly help you more. Hope this helps.

first check the settings on the audio menu of the dvd player. make sur it is set to 5.1 (if available) otherwise set it to stereo and your system should decode it.
assuming the second step is okay : as other dvd you play seem to work) it still may be that your unit is decoding stereo inputs just fine and 5.1 is not working properly....
so if adjusting audio settings in dvd play back menu dont work,
check that the cables to the satellite speakers are connected correctly and all plugged in soundly ( voice is high frequency,- coming from satellites - the garbled noises you hear are the base ( low freq) elements of voice which are coming from the bass box ( that the X.1 part of 5.1) and so that is obviously working. ,

This is a 5.1 (6 Channel Technology) You should hear only the voice thro the center speaker. If the source you are playing is stereo, however the software splits the source its difficult to seprate the voice track, if the source is a DTS 5.1, then you should hear the voice only thro the center speaker. eg: when you play a DVD movie which is DTS 5.1 then you should hear only the voice track in the center speaker, if the dvd movie is just stereo then you will not hear any audio in the center speaker, while the other four speakers get output, this is the special effect in 5.1 ( 6 channel Output).