Yes, front baffle of the CS2.4 is 3” MDF. Don’t know about the 2.7, but imagine it is the same. Was that model ever reviewed?
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This subject reminds me of my turntable base. I did a loooong thread detailing my flailing layman attempts to create an isolation base for my 55lb aluminum transrotor turntable. It was fascinating investigating, to the extent I could, the vibration behaviour of various materials, footers etc. I used a seismometer app on my ipad and iphone so that I could at least measure and see, objectively, the relative differences I could detect in damping vibrations. It turned out a spring system under the bass had by far the most dramatic effect in de-coupling the base from any vibrations occurring beneath those springs. If I stomped on the floor around my turntable rack without the springs/base, I could measure huge, ringing spikes of vibration. But with the spring system under the base, I could stomp around and measure almost nothing. Anyway, more apropos of the baffle tweak I was thinking of: In constructing my turntable base I used a 2 1/2" thick mapble block, then under it two boards of thick MDF (different thicknesses) with sound damping lining in between as a sort of constrained layer effect. At the last minute I went out and bought some 1/8" thick sheets of stainless steel cut to size. I was amazed at the effect merely placing one of those sheets had underneath the MDF boards. Rapping or knocking on the shelf produced a much more dead "thonk" than just the boards themselves. This was true even when the 2 1/2" maple block was put on top of everything. So it was: Maple block/MDF layer/Steel sheet. With the steel sheet at the bottom of that stack, knocking on the top of the Maple block felt more solid, and sounded more solid, than when the steel sheet way below was removed. I gained an appreciation for just how darned solid steel is vs wood. (Which was in the back of my mind, thinking of that baffle tweak). |
@solobone22 I have a pair of Bel Canto REF600M’s coming this week. Current amps are a Krell TAS and a Bryston 3BST. More as I get the new units setup and broken in. I’d be very interested in how your Thiels make out with the Bel Canto REF’s! I’m looking to get more powerful amplification for my CS3.5’s, but a part of me is struggling with the associated increases in inefficiency that a more powerful class A, class A/B or tube amp is going to bring. Don’t get me wrong...a proven vintage Krell or something from Pass is still high on my list, but trading my Audio Research gear for an all PS Audio Stellar stack (mono M700 amps, Gain Cell pre and NuWave phono pre amp/DAC/ADC) has crossed my mind as well. Anyway, apologies for rambling a bit. Good luck with those Bel Canto’s (they have gotten rave reviews) and please do let us know what you hear. Enjoy the music! Arvin |
beetlemania, Thanks. Yes the 2.7 was reviewed in a number of magazines, in the USA, Europe and Asia. Some here: https://hometheaterhifi.com/reviews/speaker/floor-standing/thiel-cs2-7-floorstanding-speaker/ Absolute sound (made the cover): http://www.hificlub.pl/sites/default/files/marki/broszury/cs_2.7_the_absolute_sound.pdf Europe: http://www.hifitimereview.com/thiel-2-7-english/ Asia: https://translate.google.ca/translate?sl=auto&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&...= Owner manual, info: https://soundapproach.com/pdfs/CS2.7.pdf |
@prof thanks for those links. No wonder I never saw those reviews. I haven’t read TAS in years, their credibility is near zero, IMO. And hometheaterhifi is not one I look for. I didn’t read all of those links but they do say that the sides are plywood (that veneer job must be interesting) and that the baffle is 3” but without specifying the material. Hard to imagine that thickness would be any other than MDF. Tom has an idea to identify cabinet surfaces with resonance issues but I was unsuccessful at helping him with my setup. |
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