pass XA 60.5 vs Pass X250.5

I agree, plus you need the most power for the lower frequencies.

What is the brand and model of your speakers. Practically all mid-size and many full-size speakers can be driven by the XA60.5 alone. Each of the XA60.5s has 2 sets of output. You can separately drive the mid/high frequency driver using one and the low frequency driver with the other output. Basically you might not need the XA30.5 on top of this at all.

Thank you for the responses so far. The speaker is the Orion which is a Siegfried Linkwitz design is fully active i.e. each frequency band has to have it's own amplifier. The design is an open baffle dipole with 2 bass drivers, one facing forward and the other in reverse but wired in tandem. Currently each of these drivers is powered by it's own 60 watt amplifier. The specs of the driver are as follows ( please pardon all these numbers as I don't really know which ones you'll need to give me your opinion on this issue)
Electrical Data

Nominal impedance Zn 8 ohm

Minimum impedance Zmin 4.9 ohm

Maximum impedance Zo 53.3 ohm

T-S Parameters

Resonance Frequency fs 18.9 Hz

Mechanical Q factor Qms 2.63

Electrical Q factor Qes 0.18


Sensitivity (2.83V/1m) 88.4 dB

In stock form with it's ATI amplifier, it is a excellent sounding speaker. However when I substituted the Pass XA 30.5 for the mid and high drivers it elevated the performance of the speaker to another level. My issue is to therefore get the lower end to be of comparable quality, hence the question.

Thanks again for the input