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Vandersteen 2Wq subwoofers with M5-HP crossovers - help needed

I have been happily using a pair of Vandy 2Wq subs with single-ended M5-HP crossovers for a few years now. My system was dialed in the way I like it (bass a bit on the full side, but still tight and defined). I just had my amplifier repaired and upgraded, and the new input impedance is 22k ohms vs. the 10k ohms before the upgrade. I followed the Vandersteen recommendation for the jumper settings in the M5-HP (6 and 7 only, "on" or not open), and the bass is just about MIA altogether. As per the Vandy web site, I disregarded the chart on the case of the M5-HP and followed the chart on the web site.  Because I am an idiot, I didn’t bother to mark down the settings of the jumpers prior to changing them. Anybody have any suggestions for me that will restore the bass? I am pretty sure the issue is the jumper settings. Thanks in advance!
bondmanp
hifiman5's avatar
hifiman5
1,832 posts
 
The following question and answer is from "Ask Richard" on the Vandersteen website.

Roger (8/12/15): HELLO, I have a couple w2 s paired with 3Asig and a set of M5-HP filters . My questions are, are the stickers on the covers accurate for use with the 3as and is "open" on the dip switches the same as "on"? Thanks Roger

HELLO ROGER, THE STICKER ON THE COVER OF THE M5-HP IS ACCURATE FOR A 100Hz CROSSOVER (MODEL SEVEN, 5A CARBON AND QUATRO WOOD CT SPEAKERS). WHEN USING THE M5-HP(B) HIGH-PASS WITH THE 2W OR 2WQ SUBWOOFER (80Hz CROSSOVER) YOU WOULD USE ONE SETTING LOWER. OPEN IS OFF.

What Richard probably should have been clearer on is that when using the M5-HP with the subwoofers to use the settings as shown on the chart as displayed on the website.  As he did say, the sticker settings are for Model 7, 5A Carbon and Quatro Wood speakers.

mr_m
1,900 posts
 
I believe the sticker on M5-HP has settings to accomplish a 100hz crossover point, whereas the settings page for the 2W series subs is for a 80hz crossover point. Correct?
hifiman5's avatar
hifiman5
1,832 posts
 
@mr_m  Exactly!👍
bondmanp OP
1,824 posts
 
@mr_m@hifiman5   Ah, that makes sense.  The 5 series speakers cross over at 100Hz.  So, I guess for now, I am living in sin.
mr_m
1,900 posts
 
Bondmanp. No. you're not living in sin. You would make Richard Vandersteen very angry. You wouldn't like him when he's angry...lol
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