Vandersteen Quatro Crossovers


Can any Vandersteen Quatro owners tell me about the balanced version of the required crossovers.Does it use batteries that over time need replacing like on the Model 5"s? Will be using McItosh MC501 mono blocs,any related info regarding hookup would also be greatly appreciated.
Thanks,
Dennis
denman
It uses the same M5-HP crossover.
I think you will need to do the 1000 hz 1v 100 hz .707v Minus 3 db down test in the manual with these amps if i remember correctly the amps say they are 50 K but you may end up at a lower setting for proper x over point.
Cheers Johnnyr
Can that battery in the M5-HP be easilly replaced by the end user at home, or do they need to be sent back to Vandersteen to be replaced?
((Can that battery in the M5-HP be easily replaced by the end user at home, or do they need to be sent back to Vandersteen to be replaced?))
It should be done by a person that is competent with an Iron you will also need 3M double stick tape and correct size Made in USA wire ties. Vandersteen Audio performs this service very reasonably I would suggest you purchases Two
9V lithium Ion batteries for 10 year lifespan.
Best Johnnyr
((Can that battery in the M5-HP be easily replaced by the end user at home, or do they need to be sent back to Vandersteen to be replaced?))
It should be done by a person that is competent with an Iron you will also need 3M double stick tape and correct size Made in USA wire ties.
This is the last area where you want to be frugal
having an intermittent connection with 9V to ground is not worth taking a chance.
Vandersteen Audio performs this service very reasonably I would suggest you purchases Two
9V lithium Ion batteries for 10 year lifespan.
Best Johnnyr
A couple points. First, the Quatro does indeed have a crossover network; it's inside the speaker. It is not battery biased. Here's a pic.

http://i89.photobucket.com/albums/k220/jeffreybehr/0%20Vandersteen%20other/Crossovertermsbtm_1280h.jpg

Secondly, the M5-HP is not a crossover, it's merely a high-pass filter.

BTW, Richard V. has stated elsewhere that the high-pass filter point to be used with his powered-bass speakers can be anywhere from c. 40 Hz. to c. 100Hz. What you should use depends on how warmly balanced you want your lower frequencies and how hard you drive your system. One would use a lower frequency for additional warmth and a higher frequency for increased power handling.
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(((BTW, Richard V. has stated elsewhere that the high-pass filter point to be used with his powered-bass speakers can be anywhere from c. 40 Hz. to c. 100Hz. What you should use depends on how warmly balanced you want your lower frequencies and how hard you drive your system. One would use a lower frequency for additional warmth and a higher frequency for increased power handling.)))

Jeffery Big Mistake......
While you can adjust and play sample the high pass filters with Vandersteen 2WQ Subs and other full range main speakers Vandersteens non powered versions included.
The Vandersteen Quatro,Five series, and Sevens must be
used with the High Pass filters set for 100 HZ
or expensive damage can occur to the mid-bass driver. These ultra fast Voice coils in the mid bass driver are operating in the 100 Hz and above range which allows for their unique and seamless transition.
Once this is correctly set you can perform Room EQ and adjust the contour and Bass volume to your preference.

Cheers Johnnyr
I recently acquired a pair of Quatros, but they did not come with the M5-HP filter. The owner apparently misplaced it during a move and has not ran the speakers since. I am anxious try the vandys, but don't want to run them without the filter to avoid damage. However, $600 for a filter seems excessive. Will something like this work in its place?
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=266-274
It appears to be the same 100 Hz high pass as the M5-HP, just at a more reasonable price. Any thoughts on this would be great. Thanks.
Gee whiz Drevil....do it right. You have a good speaker, don't ruin it with inappropriate add-ons.
Jeff, you were waaaay off on this one pal. You have great info many times but this time you are mistaken. As for crossover I suppose you can try what you want but know ideal is O.E.M. parts.
you must have the Vandersteen x 5 set to your amps proper input imp as in the owners manual I would suggest you
make sure you do this so not to get deeper in than you already are.
Best Johnnyr
No. The first reason is that the ones you linked to are second order (12db/octave) whereas the M5-HP is first order (6db/octave). Secondly, the filters are placed in series with the signal and their quality affects the entire audible spectrum. The parts in the Vandy filters are high quality and cost several hundreds of dollars at retail. Even if the Parts Express filters were first order, the speakers would likely end up sounding different.
I thank all of you for being so concerned that I'm destroying the UB/lower-MR drivers of my 5As by using a hi-pass filter point (HPFP) lower than 100Hz. But if that were to happen, my speakers would have been ruined many months ago. In fact, they aren't; they still sound excellent and maybe better than ever.

'Tis a fact that there's virtually nothing in this crazy hobby that's black or white, ESPECIALLY the results of very-'slow'-slope first-order filters. Do youz guyz really think that a...say...1- or 2dB difference in energy at...say...70Hz is going to ruin a driver in one of these systems? The overall volume a system is driven to has FAR more affect on the energy getting to a driver than the frequency of the HPF.

And how about the highly 'nominal' input-impepedance specs of some amps? My McCormack DNA-750s use transformers at the inputs to reverse the signal polarity going to one section of the amp. The amp's stated input impedance is 10K, but the actual impedance for CR filtering is 16.7K, measured very carefully and repeated. THAT difference would move the calculated HPFP 2/3 ovtave!

So calm your indignation, boys. My HPFP that turned out to be 58Hz is working excellently with my 5As, bringing with it a slight increase in overall warmth and richness without any 'thickness' in the lower frequencies, and I also run the bassamp controls lower than if I were using a 100Hz HPFP.

Youz guyz ought to be paying more attention to the head-banging, screaming-and-crashing dideeboppers who ARE overdriving their bass and MR drivers, not me.
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:-)
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Its okay if you run the speakers upside down if you want to.... Most people who post are trying to help people set up the speakers correctly and by the book. The whole system is designed for 100Hz and the manual includes instructions on how to get it correct irregardless of the quoted amp impedance. If you don't agree with Richards design, that is fine but not wise to mislead others. Moving the high pass frequency from 100 hz affects the phase and amplitude of the bass system, period. Just a reminder that it is not personal, just trying to help people to get it right. If you have the guts call Richard and get the straight scoop.