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64.12.116.16
In Reply to: RE: Old Vs New, and my new system (long) posted by Bold Eagle on July 01, 2009 at 18:11:23
Is this not a variation on what you were doing with the little Polks, and had at Dayton DIY, some years back?
I suspect we will have a DIY again this year in Lexington, around Thanksgiving.
Maybe you should pack them up and bring them down. I'm sure the guys would be interested.
David
David,
Yes, exactly. Your memory serves you well, that was about 5 years ago.
There are three key differences besides the PSB B15's Vs the Polk RTi28's. First, the PSB's allow a lower crossover frequency; second, I bypassed the Advent's series inductor this time; and third, this time around I had the Behringer RTA and mike to help with the set up. Everything else is pretty much the same stuff.
I think that if I had the RTA back then it might have been more successful. I did have a Radio Shack meter, the Infinity RABOS kit, and some test CD's back then, but they really were not good enough. For one thing, after I got the RTA, I looked at the output from some 1/3 octave pink noise test CD's. The noise was on 1/3 octave frequency intervals; but the bandwidth of the noise was much greater than 1/3 octave - being nearly a full octave wide. So you think you're doing a narrow band measurement, but you're really not.
My son still has the Polks with the Dennis Murphy crossovers. Great little speakers, and a huge improvement over the stock crossover; but the PSB's are better in several respects.
Jerry
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