Kef 107 vs 107/2

I Disagree

I own the 107s and the 107/2. They do both sound similar, yet I prefer the sound of the 107s. They seem a little more coherent to me. The ability to biamp is all well and good and that is how I have my 107/2 set up. But to be honest there is really no difference in the sound or if their is it is not easy to hear. The 107s have exceptional bass control already (when used with the Kube). If you find the 107s to be a little dark, remember that the cabling used to connect the Kube via th tape loop on the preamp makes a significant difference to the sound. The 107s ans 107/2 are exceptionally neutral compared to most other speaker systems and I've owned many. They continue to surprise me with each upgrade I make in the chain. If mediocre components are used in the chain, then the end result will be somewhat mediocre. If cables are changed anywhere in the chain the results are immediately noticable. I am very familiar with the 107 and it isn't perfect, but its not far off. In other words I've heard better, but nothing yet that totally eclipses their performance. Properly set up; ie well out from the back wall by almost 4 feet - used WITH the Kube and with excellent electronics and cabling, these speakers will deliver excellent performance.

Running my 107s with McIntosh MC252.......a match made in heaven....additionally I utilize a fully balanced KUBE....very rare bird indeed!

I presume that if you cross the 107s or 107/2s to a suitable sub below 80 Hz the KUBE is not needed; is that correct? I have a KUBE designed for use with 104/2s that I have never used, because I cross my 104/2s below 80 Hz to my Velodyne HGS-15. It seems logical to me that freeing the KEF drivers from very LF excursions can only enhance their airiness and transparency above the cross over. Although the 104/2s excellent full range speakers, the sub adds LF extension, noticeable especially with low pedal notes of pipe organs. The 104/2s seem to loose a bit of airiness when used full range with the sub, so I always cross at 80 Hz.

db

has anyone ever tried to upgrade the crossover on the 107. With the vast improvement in semi conductors .....there should be some audible differences......

i have the 107 and the 107/2... i would like to upgrade/ modify my 107 to become 107/2......Has anyone ever attempted?

I've had 107/2s since the early nineties (replaced my AR9s). I think the differences between the 107 & 107/2 is mostly attributable the KUBEs each use. I listened to both versions when I was shopping (the dealer had older ones still in stock), and I recall thinking the /2 was worth the price difference (around $500, IIRC). KEF claimed the only changes were a new tweeter, bi-amp ability, and the design of the KUBE... my suspicion then, as now, is that the KUBE makes the biggest difference. I listened to each, with, and without their KUBEs, and the older model sounded worse in the mids & highs, with the KUBE. The newer model sounded almost exactly the same with, or without it's KUBE... except for the improved base, of course. I wouldn't use my 107/2s without the KUBE, if I had an older model, I'd look for a newer KUBE!
Also, it should be mentioned that any 107s are going to need new woofer surrounds by now, even the last of them are certainly cracking. I just redid mine a few weeks ago, and I should have done it a couple of years ago! A properly working pair of 107s (with the KUBE) have AMAZING base that IMHO can't be beat for less than $10k.