Thiel CS2.4 and suggestion on preamp


So Im getting back into Hi End Audio after many years. To that end I have purchased some Thiel CS.4's and a Vincent SP-331 amp. I've had my Acurus LS11 preamp modified by Ken Ealey. I also run a Rega Apollo R CD player. My cable is Kimber Kable 8tc speaker cable and I still use some old Tributaries for interconnects.

The sound as many of your know is very revealing on these speakers. I've been reading on this forum how many people say they are bright. I suggetst that it's not so much the fault of the speakers (though there is energy in the highs) as it is the listening position, toe in (or lack thereof) and most importantly the quality of recording that contributes to a really good sound vs. a bad sound in them. Without a doubt most of my 90's CD's sound overly bright (of course there are exceptions). However, with the right recording these speakers are wonderful. My amp is a Hybrid design with a tube front in and SS output. The Acurus line stage is going on 20 years old, but I had it refreshed by Ealey and man that thing is amazing now for a meager 300 bucks.

Currently I am auditioning my workmates VTL TL2.5 preamp just to compare for kicks. The VTL is all tube and it does soften the highs of the Thiels a bit, which allows me to enjoy many more of my older CD's. However it comes at a cost to the space around the instruments. There isn't as much air around the performers and their is a more laid back feeling while being not as detailed feel to the music. The bass of the VTL isn't as tight or controlled as the Acurus either. However, I've never had tube equipment and this expierment has me thinking of what tube preamp would be a good fit for my speakers. If my budget is $4k (but preferably $2.5K +/-) I could go with a Audio Research LS17 pr SP17, but there is no where near me to hear these pieces, for that matter any hi end gear. I limited to the internet for most of my purchases.

My question is what would be a good match for the Thiels for a preamp that would have good space around the performers, good tight controlled bass, with highs that wont aggrevate the Thiels.
last_lemming

Showing 5 responses by last_lemming

I might try a CJ, but my budget would limit me to a classic line stage or et-2 or et-3

As it stands now I will be ussing a NAD M51 DAC that will allow me to run 2 channel sacd's thru hdmi or redbook cd's. It's getting great reviews and it can be used as a preamp. I'll try that route and if bettering the source doesn't work then I might go CJ tube per. I need to do some research on the CJ units I mention first. Not sure how they stack up in their price points vs say rogue or vtl gear.
I agree with your assesment Drjay. Im using my NAD M51 DAC as preamp straight to my Parasound Halo A21 right now. The sound is not bright at all on good recordings and is VERY open and clear. I have downloaded several albums from HDtracks.com and have found them simply amazing on my system. I have a CJ MF2100 but it simply doesn't have the guts to push the Thiels. I also tried a Vincet amp and it just didn't have the low end grunt that was needed. Im pretty happy with the Parasound so far considering its price point. The trick with the Thiels as Im coming to understand, and that most people have already said on Audiogon, is that you need lots of clean power. If the amp cant deal with the bass then the highs sound clean but the bass cant starvs giving the impression of a bright speaker. However, if you feed it gobs of clean power and allow the bass to have its day, then the speaker balances out nicely. Not to say the the Thiel has gobs of bass, it doesnt, just accurate for whatever bass is there. However, they are a VERY revealing speaker so a bad recording can hurt your ears.

I was considering a Balanced preamp, but Im not sure I like the idea of another potential distortion between the sorce and the amp. I like the idea of less is more. But Im open to comments/ and or correction on this.
What benifits would adding a preamp be? I would think it would only add the new preamps sonic signature to the sound. I suppose this could be good or bad - depending.
Velocityofhue, right now i run straigt from the source to the amp. Though I would love to add a BAT preamp wouln't I just be adding a sonic flavor to the signal at this point. Assuming the BAT doesn't does help in any other way. One question though, being that the Thiels lean towards the bright side how does the BAT influence the highs?