SpeakerTalk

fmacarty · Introductory Contributor Joined: 28 Jan 2011 Posts: 3

Hi,
I have a project to rebuild my crossovers from scratch as one has crashed.
But i don't find the value of the tapped inductor described on the schematic.
http://www.hifiloudspeakers.info/Anatomy/Crossovers/DN17SP1052Corelli/Gallery/pages/corelli.htm

Any info from the Kef engineers ?

Thanks,
Fabrice

ps : i have posted the same message in the diy but i guess this section here is more appropriate...

Frater Perdurabo · Posted: Wed Feb 02, 2011 3:51 am Post subject:

I'm planning to rebuild mine, as well. But usually crossover rebuilds only replace capacitors; changing inductors means matching dcr as well as inductance. What do you hope to gain?

ColinR · Posted: Wed Feb 02, 2011 11:22 am Post subject:

Frater Perdurabo · Posted: Wed Feb 02, 2011 11:33 am Post subject:

Sorry - I misunderstood. I'll measure the values in mine when I take them out.

speakerguru · Posted: Tue Jun 07, 2011 9:54 pm Post subject:

Did you ever get to the bottom of this? I don't recall any tapped inductor in the Corelli. We were always encouraged to avoid them for production reasons. Obviously the Model 104 and 104aB used one for the "contour" control and I used one, for a limited time, in the midrange section of Model 105|4, as an auto-transformer. Other than that, I don't think so.

Has the circuit shown in the posted schematic been wrongly traced? Shouldn't the Corelli tweeter section have been an aB type as well? It was the same era as the 104aB.

ColinR · Posted: Wed Jun 08, 2011 12:09 am Post subject:

speakerguru · Posted: Wed Jun 08, 2011 7:25 am Post subject:

Thanks, Colin.

I obviously didn't have much to do with this model.