I have to agree with Gianni, the D2500 signifies it's the digital version which requires a Meridian Processor with SPDID outputs for Meridian active speakers.

You need the M2500 version which is the Analogue version which would take the line level output from your AVR.

Pwack

G68J, HD621, G98DH, DSP5000, DSP33C, 2x205s, KEF TDM 34DS, B&W PV1, SLS Ensemble,Control 10, Sony HW40ES, XboxONE S X.