40.3 Reference Loudspeaker

Technical Information

  • Tweeter: 1” Beryllium Dome High Frequency Driver
  • Midrange: 5” Glass Fiber Cone Midrange
  • Midbass: 8” Glass Fiber Cone Midbass
  • Woofer: 2 x 8” Aluminum Cone Woofer
  • Bi-Wire: Bi-Wire Capable


  • Frequency Response: 28Hz to 30kHz (Bandwidth)
  • In-Room Sensitivity: 91DB (2.83vRMS at 1 meter)
  • Recommended Power: 20 to 300 Watts
  • Nominal Impedance: 4 OHMS (3.7 OHMS Minimum)
  • Dimensions: 53”(H) x 13.5”(W) x 17.5”(D)
  • Weight: 130 lb. (58.9 kg) Each
  • Warranty: 10-Year Warranty
  • Return Policy: 30-Day Money Back Guarantee

More About 40.3

If you’re looking to make a statement, the refined design of THIEL’s 40.3 tower reference speakers will draw compliments for the way it delivers such powerful and opulent sounds. Tall yet sleek in design, this floor speaker will fit with ease in your main entertaining area and liven up any intimate gathering.

Open floor plans, great rooms and homes with grand ceilings will benefit from the 40.3 as it was built with the utmost precision made to provide a superb listening experience that sounds equally as exquisite no matter where in the room you’re standing. Create the perfect sound track and let the 40.3 deliver a front row experience in effortless fashion.

THIEL is a pioneer in developing technology that delivers rich and crisp sound. In the 40.3 floor speaker sound deploys through the four-way design of a 5.25” midrange driver, 8” midbass driver, and two 8” aluminum woofers. Paired with titanium dome tweeters that minimize distortion and allow sound to be reproduced with incredible accuracy the 40.2 delivers unmatched sound quality and top performance at even the highest of volumes.

Each pair of 40.3 loudspeakers is made in the USA.  The customer will personally select their custom finish options, which will be designed to accentuate personalized home décor while adding a stylish upgrade to your living space by bringing a unique way to add home accents that your neighbors will envy. Personalized, modern sophistication and a musical experience like no other is what you’ll get with the addition of the 40.3.

Say goodbye to speakers that disrupt your living space and detract from the overall look and feel. Enhance both your entertainment and your design with the sophistication of THIEL’s 40th Anniversary Collection.