KEF recap. Kef Concerto speakers from the 1970s are revitalized with a recap of the crossovers

KEF recap. Kef Concerto speakers from the 1970s are revitalized with a recap of the crossovers. The capacitor kit was purchased from Falcon Acoustics of the UK. The kit consists of 10 crossovers, 5 for each speaker. They are Alcap capacitors carefully selected to match those on the original DN12 crossover board. As a result, the speakers sound like they would have back in the 1970s which means they are richer, more vibrant, and very pleasing to the ear.

[@fabianoflaherty5574]

Nice one. I have the same 1004 crossovers and drivers in what seems to be a concerto diy kit of sorts. They still sound amazing and warm but I know they will benefit from a recap. After watching this I'm even more excited to make this happen. Thanks for great vid

[@robertlaws254]

Lovely to see. Thank you for posting this. I have three pairs of concertos. One pair I made from kefkit-3 with my father in 1971. I later bought another pair which seems to be a prototype: the crossover is built on a breadboard inside the cabinet. The third is another kefkit 3that someone else built.

[@nathanteach7266]

Very informative, Thankyou. I have a set of Heath kit speakers I am working on restoring. Same drivers, but different crossover board, so may need to hand match capacitors if they are different values. I would like to share a picture of the board. The inductors are larger. Don't recall how many caps.

[@galleritegn4319]

Hi and thank you for your rendition, especially as I am going to have a look at a pair of Concertos tomorrow. I note that the capacitors are rated at 50v in the kit but you have decided to replace them with 100v items. I would be grateful if you could explain why? Thank you.

[@Dyleet]

Thanks for posting this! I’m wondering, do you have advice on getting inside a KEF concerto cabinet that’s actually made by KEF? I have one - they don’t have any visible screws on the front panel. I can’t find any info anywhere online.

[@Redblower]

Thanks...will be doing mine in a few days