Zu Defintion 1.5 vs Def IV

My room is 24 x 14.5 x 16 high. The Def 4s are on the long wall and within a couple of inches of the back wall. However, the room is one end of an open plan that is about 45' long, albeit broken up by fireplace, kitchen, mezzanine study above the kitchen, etc. There are no rugs on the floor. I was lucky in that Sean delivered them during one of his East Coast trips and dialed them. Bass is very deep, very tight. The SPL vs frequency curves on the Def 4 spec sheet are from my room.

That is quite a space you got there. What AD issue was your crib in? I'd like to check it out. I've been AD for 20 years. Also, when you're in the sweet seat, (I don't know what your listening pleasure is, but since you're a tube guy?) how does jazz,classical etc. sound?

It was first published in the Feb 1996 issue of AD. I listen to classical (from Renaissance polyphony to modern symphonies, chamber and large scale works for chorus and orchestra, just not much opera), jazz, female vocals, classical and alternative rock, etc. Basically everything. Good recordings sound good. Bad recordings get trashed. I use tubes with the Def 4s because they sound great together (especially the Takatsuki 300b), but SS with the Celestion SL-700s in my bedroom.

So, as I read you, when you you're in the sweet spot,your rig delivers intimate, revealing and sweet sound in that huge volume of air you got there? I'm thinking jazz plus Ella, Sarah, Anita and the like?

Yes. But off axis listening is also good, much better than previous Defs.