Affordable electronics to suit Thiel 3.5 speakers

Hi All,
About a week ago I came across a really good buy on a pair of Thiel 3.5 speakers. I got them home put them in my existing system and noticed that while the bass was much improved and they showed significantly more detail then my Vandersteen 2CE's, they seemed to quite forward and bright.

I love detail and bass in my music (which is primarily orchestral and folk) and that aspect of the Thiels really appeals to me. Unfortunately, when I listen to them for any length of time they begin to seem almost harsh. Reading in the forum, I see numerous comments that Thiels simply will not sound good until they have excellent upstream electronics. My current upstream electronics, which sounded very good with the Vandersteens, are an Oppo 83SE player , Sony TAE 80 ES preamp and Acurus A150 amp. Interconnects are Kimber PBJ and DH Labs with Audioquest Cobalt speaker cables.

What I'm hoping is that some of you who are familiar with the Thiels can help me identify what steps I should take next. I'm a bit concerned that I just am not going to be able to make the Thiels work. My listening room is only 15 x 14 and because it has a very heavy one piece home-built sofa which is L-shaped, a fireplace, and because it connects two other rooms, the only location that I can put the speakers is 18 inches from the right wall, 36 inches from the left wall and 18 inches from the wall behind them. My listening position is 9 feet from the speakers. Because there is not much I can do with respect to speaker placement, if I am going to be able to make them work it will need to be through finding electronics that keep the detail and get rid of the harshness.

Because I am on a tight budget, expensive amplifiers are not an option. I do have coming to me from an Audiogon member a Threshold FET 9 preamp which I bought before I got the Thiels. I suspect this will help some, but the consensus seems to be that if I do not have a least 200W per channel, the Thiels just won't sound good. I have had good luck with Hafler amplifiers and wonder if perhaps replacing the Acurus with an old H500 would help significantly. In one post regarding Thiel 3.6 speakers, a member mentioned that a B&K EX 442 Sonata might be a good choice but I have no experience at all with this amplifier.

So, would those of you who have expertise regarding the speakers and what electronics might result in a substantial improvement in the problem areas please share your thoughts with me?

Thanks in advance,
Jay