Ramtubes, could be my terminology is off, but if a loudspeaker has a built in power amp for the bass drivers and separate inputs for an external amp to drive the midrange/treble, then it requires bi-amping.
We really shouldnt have to be doing all this guessing. I wish the OP would tell us more about how this speaker is set up in his system.
I think he has the preamp/processor that goes with this speaker. If one looks at the back panel there is an XLR jack to drive the plate amp. There is one one pair of speaker terminals for the rest of the speaker so it cannot be biamped without going inside. What I do find curious is: If you do not have their preamp, which is featured on the website, then where are you supposed to get the signal to drive the XLR?
If a speaker has a built in power amp for the sub, no other amp is required there. It wants a line level signal. So there is no biamping in this case. One could s
Many speaker makers, Vandersteen and others provide two pair of inputs that can be biwired, biamped or simply strapped for one amp. That is when biamping is possible. Some choose different amps in that situation as the upper speaker often needs less power than the lower (regardless of the sub). So a big SS amp on the bottom and a nice tube amp on the top.
There are many of us who feel small amplifiers sound better. The sins that are committed in making a large amp will cause the lower power range to suffer. As an amplifier designer I happen to agree.
That is why the FTC stepped changed the rules in the 70's. Before distortion could be specified at full power where it is often lowest (in SS amps). At low levels there was often large amounts of crossover distortion. So they changed the rule to quote maximum distortion from 0.25 watts to full power. I would further reduce it to 0.000000025 watts to full power. We dont want distortion to climb at the bottom of the range.
It bothers me there is no sub control. Makes me think you have to buy their pre.