Thiel Owners

My last comment on the AHB2 so I do not drone on and annoy people. I am doing acoustic measurements with REW software and Minidsp microphone. I am doing these measurements to have Accurate Sound of Canada’s Mitch Barnett analyze my room measurements and make me some Convolution files to run on my ROON server.

My first set of measurements came out with some graphs that seemed to me that the sound was bad. I though that cannot be good and decided to do some surgery to my room. Mind you I have no idea what the graphs mean. There was a lot of red colored measurements which could not be good.

I removed a side desk and some plants and moved my system even further away from the speakers.

(the last 2 photos are the result of the surgery)
https://systems.audiogon.com/systems/7605

I ran the measurements again and this time hardly any red in the graphs. Maybe good news maybe bad news, no clue. What I do know is that the sound is much improved. The room sounds bigger and the amp sounds better. I could actually live with this sound. Though I still will get that Coda #8 amp given how much money I have already saved with this system.

^It’s possible that DSP could add demands to the amp.

That’s OK, I paid good money for the amp, need to put the amp to work.

When I first got the Thiel CS3.7 into my room I said the sound was like a 70/100. I got improvements with various steps. This room changes today take me to about 90/100. I am very interested to see what the DRC Convolution files do to the sound. I emailed the file to the engineer to do his magic. Good thing is that it is a matter of flipping a switch to either use the DRC or not use it.

I’m not trying to discourage you from using DSP, just what might be involved. I think having the speakers right up against the wall behind the speakers could reduce demands on the amp, and perhaps more importantly not over correct the direct primary sound from the corrected reflected room sound, as the two sounds will be so similar.

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thoft62 posts10-27-2020 12:12amSo uh there’s a set of 3.6 for sale next state over. They’re asking 1500. It’s itchy.."


I've owned my 3.6's since shortly after they were released in late 1993. I still find their sound very very satisfying.  I sure would recommend them to anyone.  I did have issues with the tweeter and a midrange driver on one of the speakers...about 6 years apart. I spoke with Rob on those issues when he was still at the original Thiel, and had the drivers rebuilt and returned. They have worked just fine ever since. I've tried lots of power amps with them over the years and found that I've been most happy using a Threshold SA/4e pure class A, Nelson Pass designed amp. That combination just works really nicely. I've tried others, including an Adcom Gfa 555 Mk II, plus a pair of Emotiva XPA 1 moniblocks.  They all sound good through the Thiels, but I keep coming back to the Threshold.