The main reason I brought up the crossover mod was that the crossover LOOKS rather weak compared to some others I have seen. However looks probably don't matter in the crossover world. I spent all day reading after I posted this and modifying them seems easy, I have nearly 20 years of experience repairing electronics.
The main downside is that I do not have the tools to test them. I am going to mess with my old B&W's to get some experience. I had looked at ClarityCAps MRs, Mundorf Supreme Resistors, and Goertz Inductors for the PSB and it totaled around $1300-ish for the 3 speakers. I only paid $1200 shipped for the three speakers initially. Definitely not worth it but cool stuff to learn.
I attached a picture of the crossover for the heck of it. One of my speakers originally arrived with a bad crossover that I still have laying around.
They look better than the Image and Alpha series.
It is not about looks, it is about results. I know some one who changed
all the radial caps out of the Image series, and replaced them all with
poly caps - the end result was that the speakers, ended up out of phase.
Paul Barton is a musician, and has been doing this type work for a long
time. You will need to learn with measuruing tools and software programs.
$1300 on crossover parts - is like throwing money in the fire place, to burn.
Take $1300 and save a little more - and then, invest it in something like
a Philharmonic speaker.
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This is taken from a GT1 review
During an interview as part of this review of the G-Design speaker array, Barton waxed poetic (really!) about the NRC's benefits to product development across Canada for assorted businesses, including his business, speakers. You get the feeling that here sits an engineer and violinist who loves the process of creation, one who cannot contain the excitement he experiences running computer optimizations/simulations on his next vision in the NRC's world-class anechoic chamber. For example, Barton will typically change out a small part in a speaker under development and conduct a test, analyze the numbers carefully, adjust some more, then run another simulation, and so on and so on. "Seventy-eight," he offers. "I've conducted 78 optimizations thus far, developing our new high-end line, whose working title is Synchrony. We worked just as thoroughly with optimizations with the G-Design Series."
Barton further points out that the G-Design series also relied on science to determine the internal bracing points. Thanks to the use of the NRC's laser vibrometer, PSB located the precise bracing points to minimize vibrations in each of the array's cabinets, a sophisticated design, indeed. Add to that PSB's use of "blind listening" panels to refine the speakers even more, and you'll understand why the company has won so many awards.
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I have tweaked the cabinet and stuffing of cheaper type speakers from Infinity, JBL, Polk, Paradigm and PSB, etc.
The results were decent - however, the GT1 is a different league, and I would not touch it.