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enjoy_the_music wrote:

Well I am fairly new to active speakers. I've been in contact with Merlin and Guy in the UK about these type of speakers and their experiences. I'm just taking it all in and then going forward making a few mistakes and then learning about them!  I added the 703's and have yet to time align them. The benefits, time aligned or not, are clear. I did print out a large grid with lines of 1mm spacing and varying angles. I then moved the tweeters back and forth and played around. In essence I could hear little difference between the majority of positions. I still think I will eventually get things done properly although I have only recently (last week) plugged everything together with the crossover. In the end I just opted to perch them on the centre of the horn. I hear little comb filtering or blurring of vocals. The most important thing was to make sure they were equidistant and setup correctly. The experiments will continue...

Well I do not even want to converse on subject. If the tweeters are no time-aligned then all bets are off.

enjoy_the_music wrote:

There are quite a few variants appearing from Yamamoto now...most notably 101D and 205D. Too much choice for me, difficult with my experience to decide...

Richard,
 
I do not Yamamoto amps and the tube they use. There this good buzz about AD1 and that why I started this thread. I do not know personally how credible this buzz and I do not know if Yamamoto amp would be a convincing illustration of AD1’s capacity. Still, the Yamamoto is the only company today that use AD1 commercially and it certainly deserves attention. It would be interesting to learn if the Emission Labs’ tubes are being use by other manufacturers.

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