Quote:Originally Posted by Dennis Murphy
I've been experimenting with the 22's over the last week to see whether there was an easy way to fix what I found to be a drawback for serious music listening. The lower treble became murky and withdrawn on complex program material. I quickly discovered that the crossover was not the issue. As you would expect from Andrew Jones, it's extremely well done. The problem is an underachieving tweeter. Please note that I am extremely picky about sound, and what strikes me as a problem may be a non-issue for you. Also realize that these speakers are probably fine for HT, and an amazing bargain in that function. But, since they are so inexpensive, and the woofer and box tuning are so good, I did experiment with a cheap tweeter that's always performed well for me. It's a Vifa silk dome that costs me about $25/pr
I came up with two revised crossovers to use with the Vifa. The first simply adds one $1.50 capacitor to the tweeter circuit. That significantly improves the detail and presence of the stock 22, although the midrange is a little fuller than optimal. The second adds 3 components costing around $20/pr
. That produces first class sound that is probably a little better than the Cambridge S30 or the NHT Super Zero. I've attached a plot I made of the frequency response. Unfortunately, this isn't really something you would want to try at home. The Vifa terminals aren't in the same location as the stock tweeter, and you have to enlarge the through-hole sightly in one location. And the more complex mod can't be simply added on to the stock printed circuit board. You have to build a new board. And, of course, all of this voids the warranty. Still--if you use your 22's for serious music listening and would be interested in hearing what the mod sounds like, I would be happy to ship out my pair for a listen. You would have to pay return shipping, so the closer you are to Washington D.C., the better.
I should also add - I'd be more than willing to pay to ship them back to you in order to give them a listen. I don't have the stock BS22's or the S30 to compare to, but it'd be fun to hear them.