built by Simen/Norway
Copyright 2011 © Troels Gravesen
I finnished my DTQWTmkII some months ago.
Thank you for this amazing speaker, and for all the time and effort you must have put in to them. The main reason i decided to do the build the DTQWTmkII was to get a speaker with more punch and detail. And they did beyond my expectation My old speakers the heybrook HB4 sounded good, but with 6,5" bass they needed help from a pair of sub`s and at 86db sensitivity is not very tube friendly. I use a Music Angel kt88 push pull amp, this is the only one i own so i have not tested the DTQWT on different amps, but i am very satisfied with the MA kt88
The build: was not too difficult thanks to the exellent drawings pictures and instructions. This is my first serious build and it was so much fun to do. I went for the orginal design with just some small chances, i used birch on side and top fillets, rounded the back egde and the back baffle is 9+18mm. Finally coated with a waterbased satin varnish. Sound care spikes for legs. I ordered bi wiring terminal witch i think is practical for testing of the different speakers.
The sound: I am no expert on hifi and dont have many prefrences, but Im a musician so i guess i like "live" sound. And i think The DTQWT does bring the music very alive, a huge wide sound. They play all types of music well from Bach to AC/DC and if the recording has deep bass they go all the way. Amazing!
I had to do some tweaking with the rear chamber damping. There was to much lo mid frequencies and e.g. the low end of a bassguitar drowned. As you see on the pics i used polyesterfoam and polyester wool 300g/m2 instead of green felt and MDM3 as described. I finnaly put 20mm eggcrate foam right behind the eminence drivers and it did the trick almost. But still I made covers with alu grille and 20mm foam to get rid of that last mid freq from the rear driver. Now the bass i more defined dry and accurate and i think audibly deeper. It was very helpful to have bi wiring to be able to disconect front driver to hear whats going on.
Best Regards and thank again for the