Image Dynamics Sub

Question

Can someone familiar with the Image Dynamics IDQ10 SVC 4 0hm sub tell me if 175 watts would be sufficient? The paperwork gives it a power rating of 250 watts. Would I be under powering it? My intentions, (unless you guys tell me otherwise) are to run 2 of these off a Cadence A5000+ rated at 175 watts per channel into 4 ohms. I'm currently running 1 sub with the amp bridged to 500 watts mono and there just doesn't seem to be enough bottom end. Thanks, Rick