£500 bass amp..?

I wouldnt necessarily be put off by the aparent lack of power of the xr3801, tone will be superb. The RA series were a cheaper line no where near the xr. I wouldnt use the 1850 on bass or the 2450 for that matter. T amp really do thump, many reports that the Camco does not do so well on sub, but that is only from reading not owning. 

Larry23 wrote: I've used a C-audio XR3801 with the cabs, but it starts clipping before the cabs go anywhere near what they're capable of, so the 1200w per cab appears not to do the job.

That sounds like a 3801 that needs to go and see the amp doctor to me. I have *never* heard of anyone giving a pile of subs the full beans of a 3801 and thinking "Hmm, this needs a bit more to come alive" 

Also, off-topic, this is amazing! A thread Line Array hasn't stuck his comically uninformed oar into yet!

At least a constipated bull would not be coming out with as much crap and rubbish that he does----every now and then this forum tends to attract people with a major problem that will just not go away and he seems to be the ultimate one for 2025.

paulus wrote: Sae 1450 go for 450,500 will run those all day ,I used to run 4x1850s with mine and sometimes even 6 Google abletronics amp test and take a look ran mine for 8 years full tilt 0 issues  to had crown vz5 crest and void infinite and choose this over all of them

Your 100% sure you wired the bins correctly? As if you have even one driver wired wrong / out of phase the amp will be working its tits of and appearing to do shit all.

Fane 18xb and that c-audio amp should be a pucker match! Can remember having one of them amps years back, used to run with the red lights flickering all night at small rave nights and never disappointed me. Fairly sure I was using fane xbs in reflex back then too. Can remember the handles on the cabs getting warm too so I’m in no doubt that amp can push out some power. As said above check all polarity on cables even the drivers too. I can’t see you getting much audible advantages with another amp in terms of loudness.