Hello,

I have dual HSU subs , a VTF-2Mk2 and a VTF1. I use my old Counteroint Hybrid Amp and a tube preamp for music and I use an Anthem Amp and Outlaw preamp for HT.

I went to visit someone who has twin VTF2-Mk3 subs with a professional type Rane active crossover.

The crossover really makes the bass tight and defined. I use single ended IC's with Bullet plugs so I can't use the pro crossovers with XLR connections.

Can somneone recommend a good active crossover that I can use with both subs, a an anit-resonance filter and the ability to adjust what goes to my mains?

Don't the subs have built-in crossovers? If they did, I'd use them.

I'd also recommend running them in true stereo. A way to do this is here .

Yes, the two have built in crossovers yet when you use a great active crossover, the SQ is much betetr.

That's totally untrue. It depends on the particular circuit used in the crossover. The ones in your sub are probably just fine.

A particular active crossover cannot have nearly the impact on the sound quality as you seem to think it can. The fact that the system as a whole is actively bi-amped has far, far more impact on the ultimate sound quality than the "quality" of the active crossover unit it's self.

I know a guy with twin HSU subs and he uses a RANE pro active crossover. The Bass is so deep, tight and controlled.

He now is using two ampos and says the Rane allows him to get great everything!

Whatever. I think if you did a dispassionate accessment of what was contributing to the "deep and tight" bass, it would be because of other factors than his use of the RANE crossover.

"Great everything" comes from getting a lot of details right, from placement of the speakers to acoustics of the listening room, and least significantly, the particular electronics employed.

The only time electronics will make an obvious impact on the end sound quality is when a completely different topology is being employed, i.e. using tube based gear instead of transistor based gear. Even then, the changes are not going to be "like night and day". The acoustics of the room play a much more important role in the sound of a system than any electronic change that can be made.

I am thinking a getting a Behringer Cx3400 Active crossover .

Soundhound: Relax. Take a deep breath. Don't bite Liz's head off.

Liz: In the Pro Audio World, Behringer is like the knock-off handbags you find on the streets of NYC. They may look Ok and work OK for awhile, but in the end, you get what you pay for. Your friend's gear that is made by Rane is of a much higher quality than anything Behringer makes.

In all of the messages in this thread, I'm still not exactly sure what you're trying to accomplish by adding an external active crossover. Where in your system would it go?

Well, it could have been worse - he could have opted for the digital version which would involve an unnecessary A/D and D/A cycle!

Actually, I don't have a lot of respect for either Rane or Behringer. I've made my own, using components that neither one of them would be able to afford to use in a commercial product. Things like polystryene capacitors, video buffers instead of the usual audio op-amps for the bandwidth they afford, etc.