High Efficiency Speaker Asylum: Re: Goto, Onken websites? by Jonathan Knight

I'm in the process of building a new speaker system now, so I can't say yet. I will listen to them before getting rid of them, but it's hard to get motivated to build the crossover for them. Here are the numbers:

Frequency (kHZ) Unit #1 (dB) Unit #2 (dB)

2.5 -1.3 -2.4
3.15 -3.6 +0.1
4 -0.4 -1.0
5 +0.8 -0.7
6.3 0 -3.0
8 +6 -0.5
10 +5.9 -4.8
12.5 -7.5 +2.1
16 -12.1 -15.5
20 -17.6 -14.8

There is a slight amount of error, because I was driving the drivers from a hi-Z source. But the impedance is flat over this range within 1dB or so (though it's 12 ohms for one driver and 16 for the other, so you would expect to see about a 2.5dB difference in overall sensitivity), so most of this really is the drivers. Test gear was all by Neutrik, their Minirator synthesized signal generator, Mini SPL 1/2" calibrated measurement mic, and Minilyzer.
I measured my EV T350's after looking at the Gotos and couldn't believe how much better they looked. They are flat to within +/-3 dB from 3.15-12.5k, and within +/- 1dB of each other over most of that range. They do have a problem of a peak at 5k of about 5dB, which made me keep getting up to turn them down on material with a lot of energy in this region and turn them up otherwise, as they sounded a bit soft.