2. tech-talk
  3. 137220-78931

Considering tube Monos to replace SS

I am hoping for some input on compatibility issues with a possible mono block change. I am not even close to being an EE; I rely on my ears, but I also consider (and ask for help) on the more technical aspects of compatibility, of which I am no expert. At the moment my chain consists of a Manley Steelhead phono stage, into an ARC LS-27, into a pair of Bryston 28Bsst2 mono's, driving Wilson Maxx 2's. I have been considering tube monos for some time now, and am looking at swapping out the Brystons for a pair of VTL 750 mono's. My math says it works on paper (but I am not 100% certain). I am hoping some of you with much more technical expertise can offer your input. Hope Ralph or Al can chime in, as they seem to be the most respected experts in the tech end of this hobby. Thanks in advance for any info, and have a great weekend.......
128x128crazyeddy
Ag insider logo xs@2x
rauliruegas
12,774 posts
 
Dear @crazyeddy: Problem is that the impedance and phase MAXX2 speakers is totally inadequate for tubes. Can VTL handle the Wilsons?, well it can handle but is not a good mate for the speakers. Those speakers needs the best SS amplifier you can get for can really shows at its best.

What's wrong with the Bryston, what do you want to improve? in any case my advice is to mate those speakers with SS amplifier, the speakers deserves it.

Regards and enjoy the MUSIC NOT distortions,
R.
atmasphere's avatar
atmasphere
11,574 posts
 
@crazyeddy (whose moniker smacks of A Mote in God's Eye, which I read about 40 years ago...)
The Wilsons have always been easy to drive with tubes, which is why ARC and others have often showed with Wilsons at shows. The Maxxes are no exception despite the low impedance dip- even our amps which are OTLs (not noted for driving low impedances all that well) work just fine on them. The National sales manager at Wilson had our amps for quite a few years.

With a transformer coupled amp, use the 4 ohm taps and keep your speaker cables short in any event, so monoblocks are advised. Balanced inputs are nice (although the VTLs have XLR inputs, they are not balanced so no benefit accrues) if you can pull it off, which would allow you to run longer interconnect cables. If your gear sits between the speakers, this might be a non-issue.

I recommend something around 150 watts as a nice minimum, which should work fine in most rooms. So you have a wide range of amps to look at.
crazyeddy's avatar
crazyeddy OP
381 posts
 

@rauliruegas  nothing wrong with the Brystons, but I have owned nothing but Bryston power since the early 80's and it's time for me to move out of my comfort zone, and experience something different.

@atmasphere  Yes, I do remember now that your amps were with the fellow from Wilson. The person that I am getting them from currently drives Watt Puppy 8's. He too is in a position where he is interested in trying new ground, so the deal works well (hopefully) for both of us. If I am correct, I believe Dave Wilson was driving the Alexandria XLF's with the VTL Siegfried's, although I could be mistaken. Ralph, all my IC's and speaker cables are short runs, between 1 - 2 meters, so no issue there at all.

I have committed to the swap, and we are trying to make arrangement to do the deed this coming weekend. I am looking forward to this step in a new direction, but must admit, after over 3 decades of dealing with the good folk over a Bryston, I'm feeling a little guilty. Almost like cheating on a spouse. I don't know what I'll say to James and Brian at the next show!!

Thanks for all the comments and advice all, and I'll chime back in after I get the VTL's up and running in my system with my thoughts.

Cheers

Ag insider logo xs@2x
rauliruegas
12,774 posts
 
Dear @crazyeddy: Good luck with the VTLs, at the end is you whom will live with.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.
crazyeddy's avatar
crazyeddy OP
381 posts
 

Thanks Raul. I'll let know how it works out for me.

Cheers

More to discover