Everyone's favorite DIY loudspeaker designer, Troels Gravesen, has developed yet another appealing loudspeaker design, the floorstanding ATR25.

 

The ATR25 is a 41.5" tall transmission line design featuring two 7" mineral filled polypropylene Audio Technology drivers that are mated with a Danish Raidho ribbon tweeter. Troels says the combination of the more forgiving polypropylene cones with the electrostat qualities the ribbon tweeter provides a best of all worlds combination of compromises; one that serves music but that won't be as critical of your library of music as some would be. The ATR25 is a sensitive 90dB, and the impedance curve, while it does dip to 4 ohms in places, is a generally friendly load in the 6-8 ohm neighborhood through most of the frequency range.

 

Denmark's Jantzen Audio is offering the ATR25 as a kit. Those with a little skill in the wood shop and with a soldering iron need only shell out $2515 for the plans and components needed to build the ATR25, minus cabinet and damping material. The ATR looks like a fantastic loudspeaker for the money, and the specs indicate it would satisfy solid state and tube aficionados alike.