Would there be a problem matching B&W D3 speakers to D4s?

[Okla]

We presently own four B&W D3 speakers - (2) 802 D3 fronts and (2) 805 D3 surrounds.  As we have an "unemployed" 5th amplifier in our system, we're considering adding a B&W HTM81 D4 as a center channel speaker.

 

Does anyone think that there would be a timbre matching issue of any kind mixing the newer D4 center to the [somewhat] older D3s? 

 

Thank you for your time ~

Okla

[PeterG]

I've done it with mixing CM and 700 series on center channel vs front.  The results were seamless.  The only trouble I could see is using  D3 on one side and a D4 on the other