Vandersteen 2W sub connection

It does come with a WX2 crossover. Doesn't say "2Wq" on the back, just "2w". Does the red plug look like an RCA? Looks like another banana plug to me. 
https://photos.app.goo.gl/uZ2pS7LDrGshRppY7

Yes, perhaps an older model before the ‘q’ came out. As You have the WX-2, with the dip switches (internal) to be set per the impedance of your amp, I’m guessing the set-up is like the 2Wq. Also, make sure your WX-2 does indeed have the internal dip switches, and not a set unit for a particular/set impedance level. Most will tell you that the WX-2 should only be used to temporarily set-up the sub to your particular amp, then better to buy an X2 with the fixed setting you need for the best sound.

Try contacting Johnny Rutan here : @audioconnections. He knows all about these and will get you set-up. Or call him at Audio Connections in New Jersey.

Setup for the 2W and 2WQ is identical. If you have the manual you need to read it completely before starting.

Factory is open or call your local Vandersteen dealer in the AM

The advice on reading manual is hyper important! 

The Vandy subs use a high pass filter between preamp and amp

you need to know the input impedence of your power amp to set the DIP switches on inside of crossover. iF you don’t know or can’t find out the input Impex you can with Vandertones a free download use a voltmeter to set the dip switches. Don’t guess!

Next hook up speaker wires from your amp as shown on back of the 2W

iF the biwire set of wires you have does not have bananas you will need to change. Audioquest makes a nice setscrew silver Banana - there are many others.

best