Vandersteen updates and amplifiers


Seeking experience and advice. I have the Vandersteen Quatro Wood (non-CT) and have enjoyed them on a large variety of music for the past 7 years or so. I have been able to hear changes with improvements in upstream gear and tweaks. I use a Pass Labs XP-27 phono - XP-22 Pre and the good ol XA 30.5 to power the Quatro. Balanced M5 boxes.  

Two things recently elevated the performance of the Vandersteen's in my room. First was the addition of Isoacoustic Gaia I footers. I was pretty skeptical about using these as Vandersteen designs to couple the speakers to the floor. These footers are supposed to decouple. But I felt is was worth trying because the speakers are positioned on a suspended wooden floor above a storage area in my house. I had to use the more expensive Gaia I because the 110 lb Quatro has to be supported with just 3 footers. Also, I had to buy 8 not 6 footers. It was not difficult to maintain the appropriate tilt angle by adjusting the footers. Be aware that the rear spike threads are different than the front. After many weeks of use, I think they are a significant improvement. The quality of the imaging and the tonal richness of the midrange expanded to my ears. More palpable presence in the room, better separation of instruments so that you can hear into the recording better. The bass quality changed almost like adjusting the Q. The bass may be a little less high impact and certainly less is transmitted into the floor, but overall bass better integrated into the music.

The second change was the addition of an HRS S platform under the Pass XA 30.5. This is the only component of the system that is near the speakers and in the high acoustic energy zone. Improvements in detail and clarity were not subtle. Very impressed!

So, fellow audiogoners, what might be the next steps for me if I choose to stick with the Vandersteen sound. I hear good things about Vandersteen M5 HPA mono's. This would eliminate the M5 boxes and the Pass XA 30.5. For the same price I could probably trade in the XA 30.5 for a more powerful .8 series amp.  Anyone with experience want to share? I would also consider updating to the Quatro CT if that would be a similar jump in performance. The Quatro seems to be the right size for my medium/large room. 
karl_desch
@tomstruck.  Thanks for the thought on Aesthetix. A good friend has one of their integrated and loves it.  As far as tubes go, I am not opposed as long as it sounds right!  I used to have a BAT VK75 SE, but never on the Quatro. Another pal is going to bring his Marantz 8b around soon.  I’ll report on how the Quatro likes vintage Marantz.
Noted an interesting, but I guess not surprising, change in the way the Quatros present music with some dramatic positioning changes.  I had been using the golden ratio method to position the Quatros out into my room.  They were a couple feet from the side wall and about 5 feet from the front wall.  This position really optimized the imaging that these speakers are capable of at the expense of tonality and bass response. On John's suggestion, I removed the front corner bass traps and got the speakers far back into the front corners. Instead of the triangle being 8' apart and 11 from the listening position, they are now 10.5 apart and 13' from the listening position. In this position, the bass is much more powerful but still articulate.  Upright bass playing with more presence and resonance like a real bass. Improved tonality across the spectrum. Also the overall soundstage has gotten more enormous which is great for a lot of recordings but weird for some small group recordings. I am working on positioning that will get back some of the precise imaging that is now missing.  Trying to find the correct balance.  
When you try the Marantz 8b amp make sure you use Vandertones and adjust the High Pass with a Voltmeter to nail the 100 HZ point correctly Track 27 and track 30.
Glad you chatted w Johnny - I ran my 5a for a bit with my highly modified 1961 McIntosh MC240.... Vandersteen powered bass like the Quattro takes such a load off your main amp - be prepared to fall in love w tubes !!!

You can check out my placement and ARC and Aesthetix gear on the virtual system page: Poverty Bay Sound

and Zen,  Seattle style