Vandersteen 2Wq crossover

Hi. This thread is interesting because I just bought a 2wq without any WX-2 or X-2. I have been wondering what people listen for when deciding the optimum impedance for the crossover... does the impedance value only change the crossover point, or are there other sonic issues with different impedances. Ideally I would love to find and MHP-5 but they seem difficult to find. If I had someone make a high-pass filter with very high quality caps, could I just pick a value based on the impedance of my CJ MV-60 (100k), and maybe peg the caps at a lower value like 50k or 75k range? My mains are Snell Type A's which should be flat to 35 or so. I would actually prefer a lowerer cross point than 80 hz.
Thanks for thoughts!

Thanks, Bondmanp. I ended up finding a pair of M5-HPs. Now my problem is the crossover points don't match (sub at 80, M5-HP at 100hz) and there is a huge hole in the midbass. The M5-HPs are adjustable for amp input impedance, but can the crossover point be adjusted too? Maybe I have to get Vandersteen to put different caps in them?

OK, I'm not totally clear on this. So the dip switches, as they adjust for amp input impedance they also move the crossover point up and down? Sounds like you are saying I should just keep trying lower and lower impedance settings, which will effectively lower the crossover point? Is there any particular setting that will create an 80hz cross point, to match the sub?

I should have said before this is single ended (RCA). My amp is CJ MV-50 with 100k input impedance. Also, I favor a rich lower mid so prefer slightly lower cross where possible, such as 60 hz. My speakers are Snell Type A so flat to 35 or so.
The part that still confuses me is the difference between the input impedance setting and the crossover point setting. Maybe as you decrease input impedance below what your amp would call for, the crossover point starts to drop? Sorry for my ignorance here and thanks for your ongoing help.

One correction: typo... my amp is MV-60, not MV-50

My issue seems to be solved! I talked to Richard Vandersteen and he told me I could use an M5-HP dip setting one below the recommended impedance to simulate a lower (80hz) cross point. Two below at most. Far more importantly, he guessed that my Snell speakers had a woofer that is designed out of phase, and that I should reverse leads on both channels to the sub to reverse absolute phase. At the time this sounded mystifying to me that this could make a big difference. I was seeing huge variances in dB by frequency band, compared to my full range speakers on their own. Well, voila! He was dead right. I reversed both sets of leads and it was all restored. No more frequency hole in the lower mid/upper bass I have to say I was blown away.

Once I thought about it, this makes sense to me. I have not worked with subs much but now realize the cancellation that was happening between the sub drivers and my Snell woofer. Bravo to Richard Vandersteen not only for knowing his stuff (no surprise) but also remembering the phase oddity of a 30+ year old Snell Type A! My system sounds incredible. I can't wait to tweak and spike it and work on the Q setting. Also, thanks to A'goners for indulging my ignorance and helping on this issue.
Stu