Used monitor under$600 with good bass low levels

Ejlif, Mapman, thanks for the recommendations, I am still curious as to what the ohms are like. I am hoping someone in nyc invites me over.
Have you(plural) had a look at the bolzanos.

PEdrillo,

If you think there is even a chance you might keep them, you should do the in-house audition of the Ohms...there is no risk involved if they do not work out.

If your listening space is tight you might be satisfied with a pair of small Micro Walsh Talls for ~$1000 or so, particularly with the existing sub. I think the Atmasphere amp could work really well with these smaller Ohms. I can also vouch that the Denon 103R even on my comparably modest table sounds outstanding on my Ohms!

The Triangle Titus ES has twin input connector sets and can be biwired or biamped. (I have a pair.) So can the Comète ES I imagine.

Tobias,

You're right, Triangle Titus can be biwired. I had forgotten. Same with Titus 202s I own. Probably also the case with Comete.

It would make much more sense to design from scratch just buy the drivers that Bolzano use and copy the dimensions as closely as possible (drivers are usually around $50 each) - DIY clones are common enough (more common for classics though). Nevertheless the whole thing will take skill and you will probably need to experiment to get the right sound. I'd build something simpler to start with though.

I can't imagine what you will do - in my minds eye I see two used monitors strung together with hockey sticks, duct tape and bungee cords?