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Love my new SRS-XB2 but in dual unit mode the signal is out of phase.

ProJules
Explorer

Love my new SRS-XB2 but in dual unit mode the signal is out of phase.

Hi 

 

I am a 30 year career professional audio engineer. 

 

I selected the SRS-XB2 after auditioning many other units in a department store that had about 10 different models. I used to have Bose Soundlink 2 but the rediculous amount of bass on the unit annoyed me. 

 

After getting one unit home I decided to order a 2nd one to take advantage of the dual unit stereo mode.

 

However its instantly apparent that when using 2 units in stereo the L & right signals are reverse phased, leading to cancellation of almost all centralised bass signal and an unatractive sounding mid frequency reproduction

 

When listenting to pop / rock or dance music productions - the kick drum (bass drum) and bass are typically centrally located in the stereo field or 'panorama'. In a correctly phased stereo set up, bass signal from the left and right speaker combined should be additive (ie centrally panned signals should combine 50/50 to make up 100% volume) you should clearly be able to hear the kick drum in the middle and the bass instruments also.

 

But listening with your head in between two equally spaced SRS-XB2 units, there is no such low end signal additive combination (it is clearly subtractive or "bass light") and mid frequency signals exhibit the classic 'eriee / 'behind you' sound that an out of phase stereo speaker set up typically gives you. 

 

On a wired speaker set up this would be remedied by swapping the + /- speaker cables on ONE speaker to put them "in phase" 

 

Its a shame that such a cool product suffers from this fundimental problem.

 

Would the moderators product evangelists here kindly please test this and bring it to the attention of Sony engineers please?

 

I would like to have a pair of SRS-XB2's that are correctly in phase. 

 

(I suspect the rear facing bass units are the culprits, they may need to be "phase flipped" 

 

Many thanks,

 

Jules Standen

 

 

 

2 REPLIES 2
Anonymous
Not applicable

Hi there

 

I cannot test this as I do not have this product (never mind two of them) - However even though if I could confirm your findings there would be nothing I could do about it.

 

However, I am escalating your post to Sony Support for them to investigate and find a solution.  They may contact you for further information.

 

Cheers

ProJules
Explorer

Many thanks