KEF 107.2 with KUBE?

06-04-12: Dover
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If you can find Dick Olshers review in Stereophile vol 9 no 7, November 1986, he discusses the 107 Kube. He actually had DC offset problems with his 107's Kube.

Here is Olsher's review in Stereophile

I reread Olsher's review of the 107 in Stereophile. I think I discounted that aspect of it because I suspect hyperbole. Is it logical that contemporaneously built speakers would have such variations, yet the factory could build a given speaker with such precision to match exactly a previously built speaker? If that were so, why then would there be the supposed variation? And lest we forget, those KUBEs have HF and LF gain controls aimed at tailoring the sound to particular placements and room acoustics.

But if I read the review literally, I should be able to send KEF the serial numbers of my 107.2s and get a KUBE made for them. Unfortunately. my 107.2s, like so many others, were reconed with new surrounds in the US. Woe is me!

db

I have a pair of KEF 107s and tried them with and without the KUBE in a blind test and my ears could not tell the difference when it was in and when it was out of the circuit. So when asked if I wanted to sell it, I did.

My KEF's are in LN condition and so far these 20+ year old speakers show no sign of needing the woofers refoamed, but then I haven't moved them for the last 20!!

The Kube makes a noticeable difference with bass. If you are so discerning that you could tell the difference between different Kubes built for 107's you should not buy 107's.

I am the original owner of a very early pair of 103/3s that have always been used with the Kube that came with it. The installation manual makes no mention of the speakers and the Kube being matched but the Kube is labeled on the rear for 103/3. In the 25+years I've had them I don't think the dial has been off the 12 o'clock position a dozen times.
"The Kube is an active low-level equalizer. This equalization forms part of the speakers crossover network and is an essential part of the design."(from the manual)
I would be more concerned with the condition of the drivers-both the woofers and tweeters. Great restoration threads on 107/2s on AK.These were expensive when new and bring big money today.Good luck and happy listening.