Stepped Attenuator wiring

[hydrovac]

I've had one of these sitting in my inventory for a couple of months now, waiting to put it in the BA-3 preamp.

But I can't for the life of me work out the wiring connections. I know a couple of others are using these... can you point me in the right direction?

It's one of these:

 

[Guest Muon N']

What type is it stereo or mono?

 

Shunt or ladder?

 

I have wired up stereo ladder ones, but not one like you have pictured.

Edited March 29, 2019 by Muon N'

[Addicted to music]

7 minutes ago, Muon N' said:

What type is it stereo or mono?

.

The label says stereo 10k. 

[Guest Muon N']

If stereo shunt type, this might be it.

 

 

[Guest Muon N']

17 minutes ago, Addicted to music said:

The label says stereo 10k. 

There's part of it, I'm blind!

 

Edit: should there be two shunt ones separate in the input wires?

 

Best wait for more posters

Edited March 29, 2019 by Muon N'

[Addicted to music]

now if you had a MM you can work out the rest....

[hydrovac]

50 minutes ago, Muon N' said:

If stereo shunt type, this might be it.

 

 

 

Thanks,

Can you mark it on my image?

[hydrovac]

33 minutes ago, Addicted to music said:

now if you had a MM you can work out the rest....

I sure have one!

So, how do i go about it?

[Guest Muon N']

20 minutes ago, hydrovac said:

 

Thanks,

Can you mark it on my image?

Not really, It's easy to see by comparing the two.

 

Make sure it is a shunt type that has the shunt resistors built in to the design.

[Addicted to music]

6 minutes ago, hydrovac said:

 

Thanks,

Can you mark it on my image?

I’m only guessing.....

 

Turn the pot counterclockwise.  

 

Use the multimeter to find max resistance from “ tap” point that I have marked. 

 

I have shown a basic diagram in yellow.

 

[Guest Muon N']

Clear as mud, and I think that's incorrect.

 

Look at pic I posted.

[Addicted to music]

16 minutes ago, Muon N' said:

Clear as mud, and I think that's incorrect.

 

Look at pic I posted.

That’s why you need a MM and someone who know what the f...k they’re doing.. 

Like I said, I’m only guessing and testing the water.  It’s a very basic circuit,  you just have to find the sweet spots; correct points.

 

[Guest Muon N']

Your first pic is orientated the same as the one I nicked off a sale thread on the net so look at them together and it should be clear. The only slight difference is the R-out and L-out are a little lower on that one you have.

 

@hydrovac

Edited March 30, 2019 by Muon N'

[Guest Muon N']

This is only if these are the same type of attenuator, I suggest doing what addicted to music suggested, attach one probe of you multi meter to the left-in and the other to left-out with it set to 200kohms and make sure it increases in resistance as to turn the shaft anti clockwise as you would when tuning it down, and decreases in resistance as you turn the shaft clockwise like you would when turning it up. Test same way for the right channel.

 

Also make sure that the pot you are replacing is also a 10k pot, same value as the attenuator you have there.

 

 

 

Edited March 30, 2019 by Muon N'