original crossover schematics for clone ATC SCM 100

[TwangBar]

Ok - I made a stab at the layout of the xover based on the pictures posted. Note that I have labelled the changes in Red and marked the inductor numbers in blue and have also marked the colour of the wires used.

All the cap values are the same, but there are some resistor values that have changed as well as an additional resistor added to the tweeter network before the 184 inductor.

If anyone else can check my work, that would be great.

[cafe latte]

Originally Posted by TwangBar

Ok - I made a stab at the layout of the xover based on the pictures posted. Note that I have labelled the changes in Red and marked the inductor numbers in blue and have also marked the colour of the wires used.

All the cap values are the same, but there are some resistor values that have changed as well as an additional resistor added to the tweeter network before the 184 inductor.

If anyone else can check my work, that would be great.

I would but I cant open the first pic of the front of the board .
Regards
Chris

[TwangBar]

I have no problem opening it up, but I can post it again for you.

[cafe latte]

Originally Posted by TwangBar

I have no problem opening it up, but I can post it again for you.

Thanks,
Initially this did not work either so I logged out and back in again and now both links work . Couple of questions.. At the bottom of the pic of the front of the board the wires are covering the board and a bit of a jumble what is connected to what?
Also what are the dimensions of the board?
Thanks
Regards
Chris

[ewhitaker]

Originally Posted by cafe latte

Thanks,
Initially this did not work either so I logged out and back in again and now both links work . Couple of questions.. At the bottom of the pic of the front of the board the wires are covering the board and a bit of a jumble what is connected to what?
Also what are the dimensions of the board?
Thanks
Regards
Chris

The bottom wires are the output, starting from image right: Woofer is red, black. The middle wires are tweeter, which are white and yellow, and the left
are for the midrange, which are green and orange. The output corresponds with the input. Input connections at the top of the picture are also, from the right of the image, woofer, tweeter, midrange.

The board is just about 8" x 12".

[ewhitaker]

cafe latte- I measured the board for you and the exact measurement in our weird inch system is 8.25" x 13.25", or, to join the rest of the world, 210mm x 345mm.

[cafe latte]

Originally Posted by ewhitaker

cafe latte- I measured the board for you and the exact measurement in our weird inch system is 8.25" x 13.25", or, to join the rest of the world, 210mm x 345mm.

Thanks really appreciated. I want to draw a component overlay diagram so I have a plan for etching the boards. The only issue I had so far is were all the wires are bunched up at the bottom all the connections are not that clear. I am busy for the next few days, but I will get back onto it when I have time and hopefully it will be some use.
I wonder of the two circuit diagrams we have which is the most recent?
Regards
CL

[ewhitaker]

According to the seller, which of course could be fact or fiction, these xovers came from 2 year old SCM50s he had that had cabinet damage after a move. I saw that he had listed the woofers and mids on Audiogon etc. after the crossover sale. I've had them about 9 months.

[ewhitaker]

....and then there were two. Well, almost. Still need to install the binding posts and back.

[kompakt]

Hello!
Do i see correctly,that the poles of tweeter are reversed ?
Regards
Seyed