PMC and what electronics ??

He is contemplating of getting another two units of 4B-SST since the speakers can be tri-amped.

That would be overkill. The Vifa midrange on the EB1i has a very small magnet (240 grams) with low Xmax and FOR SURE the tweeter does not need 200 watts...

I'd suggest your friend looks for much smaller powered amps for the tweeter and midrange - a much lower powered class A might be the ticket.

FWIW: It is definitely worth triamping as you can remove IMD distortion (distortion bleeds from one bandwidth to the next when you use a passive crossover and a single amplifier that is trying to send several AMPS to the Woofer but barely a milli-amp to the tweeter)

Thanks for the thoughts Shadorne. That would make sense.

No I did it single ended as I couldnt find balanced splitters.

Coming in late to the discussion... That said, I work for PMC... In my travels I have heard many a good combination of our speakers with various electronics. Some of the best sound that I have ever heard from a PMC (not including the wide array of mastering studios using our MB2 & BB5 XBD Acitves) was the GB1i, such a tiny floorstander with a big sound. I've heard it with a Simaudio Moon i7 that sounded absolutely magnificent. I've heard those same Gb's with a Krell S-1000 and Evolution 400, absolutely fantastic yet again. A dealer of mine has the Bel Canto 300w monos and he say it's the best sound in his shop. A ton of Mac users love their PMC's. Any of the Parasound Halo's sound great with PMC. A longtime customer of mine has four different systems with various Audio Research pieces all with some PMC or another, obviously he's either content, obsessed, or both. There are so many different companies out there whose sonic signature can be conveyed for what it is through our speakers for better or worse.

Bryston is it for me though, with response that flat and that much power on tap... With a 20 year warranty? It's easy..

note: we are no longer officially affiliated with Bryston outside of our highest end active systems.

Mvwhiting,

Are there measurements published for the GB1i. The predecessor appeared to has some strong resonances on the mid/woofer, possibly due to the TL?

I must say that my favorite two way speaker from the 80's was Energy Pro 22 which also has a very low crossover (1.8 Khz). I see you crossed over at 2 Khz! This enables you to avoid the beaming that occurs in nearly all large woofer/mids above about 1 Khz.

The success of the GB1i speaker despite the bumpy frequency response (see link) suggests that WIDE EVEN DISPERSION is extremely important - perhaps a lot more important than ruler flat frequency response on axis.

For this reason, I suspect I still prefer three way designs and your company makes some of the best studio three ways in the business (by far).

Care to comment on the Gb1i design and the unusually low crossover?