DTQWT, built by Becheanu Sorin/Romania
Copyright 2011 Troels Gravesen
       

Here are some pictures with my DTQWT build. This is my first DIY loudspeaker project. In DYI world I've started with a TDA1541A NOS DAC (USB input and a 6SL7 tube buffer), then continued with Borbely's 15W 6C33C SE amp and now the DTQWT speakers. I'm very happy with my projects, especially with the DTQWT. They are almost finished, I just have to make up my mind regarding the exterior. To build them I've used birch plywood, except for the front were I've used 15mm birch plywood+18mm fir wood.
The sound coming from this speakers is great. I've listen to them for about 2 months now. They have a huge soundstage, voice and instruments have a very natural timbre. Love the bass. My preferred tweeter attenuation resistor is 1 Ohm. I can say that I've rediscovered my music collection with these speakers(Eric Bibb, Allan Taylor, Stevie Ray Vaughan, BB King, Poncho Sanchez, Jeff Healey.....). Thank you for this great project and thank you for sharing it. Best regards from Romania, Sorin.

 

20-07-2012
Hi Troels,
Having my DTQWT in a small room (abt. 16-17 sqm) and keeping them close to the wall, I've decided to do tweek #2 without the slots. I've put the panels at 25 mm from the rear panel and I have to say that they make a very big difference for me. The sound wave reflection from the wall disappear and now I have a cleaner, deeper bass (before I think I had a bump near the 70-80 Hz). So I highly recommend this tweek to small room and close positioning to the walls.
Thank you, Best regards, Sorin.