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Concept CE-2 crossover schematic?

jobrewer1983

jobrewer1983

AK Subscriber
Subscriber
Last Friday I picked up a rather clean set of Concept CE-2s from a gentleman on Craigslist.

I’ve yet to try them as I’ve been buys but wondering if anyone has a crossover schematic for this set? I can’t seem to find one online.

I’m going to try to swap the binding posts today, bd give them a go but would would like to see the schematic if at all possible.

I’ve not pulled a driver yet to even check on the cap values, just hoping someone has some info on the set.

Built like tanks that’s for sure!!

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I think I can drill out the backside of the binding posts and make a quick swap with this parts express one that will allow me to run bananas.
 
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homebrew said:
The 10uF and 22uF caps might need replacing, but that looks to be about it unless the pots need cleaning/lubrication.
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That is what I was thinking, I do have some nice Alpha Core inductors that may fit the bill but after looking at the pictures in the manual they look to be of some quality.

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If you must tinker (and most of us must) you could reorient the coils so that they are at 90 degrees to each other - you'd have to put some of them upright - and that would minimize interactions between the magnetic fields. I believe this is more worth doing if there is a lot of power going through the crossover, but my dim memory is that the speakers are somewhat inefficient, so power levels might be considerable.
This looks to me to be a variant of the ESS Tempest series, but I suspect you know that.
 
Nat said:
If you must tinker (and most of us must) you could reorient the coils so that they are at 90 degrees to each other - you'd have to put some of them upright - and that would minimize interactions between the magnetic fields. I believe this is more worth doing if there is a lot of power going through the crossover, but my dim memory is that the speakers are somewhat inefficient, so power levels might be considerable.
This looks to me to be a variant of the ESS Tempest series, but I suspect you know that.
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I think they are 91db so you’re correct, not really the most efficient set but also not horrible. They claim to have a minimum of 20w ans a max of 200w. Most of my amps are tubes, so will most likely run them with the quicksilver KT monos, but to start I’ll be using a 70-80wpc ss amp. Going to try to test them out shortly as I’ll be off work soon.
 
More efficient than I guessed, then.
I'll be interested to what you think of them. I believe the Heil rediates both front and back, and I wonder how the back wave is absorbed, and what effect that has on its sound.
 
Nat said:
More efficient than I guessed, then.
I'll be interested to what you think of them. I believe the Heil rediates both front and back, and I wonder how the back wave is absorbed, and what effect that has on its sound.
Click to expand...

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I’m swapping the old pin connectors to banana binding posts right now. I’ll be setting them up for some listening this evening.
 
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