[fyleow]

I tried wiring the alps into my CMOY just for testing and I didn't have much luck. I noticed that the sound cuts off on one side before the other (might be the resistance values are off). Not sure if I am wiring it incorrectly though.

There are 6 pins marked 1,2,3

1 2 3
1 2 3

I *think* 1 and 2 are for a single channel and 3 is the ground. Not sure though.

 

[Dreamslacker]

Use a digital multimeter (or analog). Set it to measure resistance.

Connect one end to pin 1 and the other to pin 2. Turn the knob clockwise.

If the resistance increases, ground goes to pin 1, output to amp. goes to pin 2 and the input from jack goes to pin 3.

If the resistance falls, the ground goes to pin 2, output to amp. goes to pin 1 and the input from jack goes to pin 3.

If the resistance doesn't change, try pin 1 & 3 instead. This works for any pot.

 

[fyleow]

Yea I did that and just wanted to see if anyone that had the Black Beauty could check if I was doing something wrong. All indications from a DMM seems to indicate my pin config is right but one side cuts out before the other.

 

[JMT]

I'll take a wild guess here. If the pin layout is the same as the Blue Velvets (I don't see why they wouldn't be) they should be:


Pot Shaft

1 2 3
4 5 6

1/4 - ground

2 - L output

3 - L input

5 - R output

6 - R input

Give that a shot.

 

[fyleow]

Thanks JMT that seems to be correct, however there is about a 2-3k difference in resistance between the left and right throughout the spectrum.

 

[Dreamslacker]

Check the resistance between 4 & 6 as well as between 1 & 3. See if they tally. If they don't, you've just got a bad piece?

 

[fyleow]

I put it away but I am pretty sure that 1 and 3, 4 and 6 just makes the POT a resistor and sets it at it's max value. Maybe I got a bad one grr

 

[Dreamslacker]

Quote:

Originally posted by fyleow I put it away but I am pretty sure that 1 and 3, 4 and 6 just makes the POT a resistor and sets it at it's max value. Maybe I got a bad one grr

You could do what I did...

Solder on a resistor to either pin 1 or 4 to compensate for the difference in resistance. I assume it's relatively linear like in my generic Alps pot.

 

[carlo]

hey, just saw this. wired up an alps black beauty yesterday, has a total of eight pins and looks like this (looking down with the pins facing you):


(Shaft)

Ground Pin - Output 1 - Input 1 - Not Used

Ground Pin - Output 2 - Input 2 - Not Used



hope that helps.

carlo.

 

[fyleow]

Hey Carlo, a little late but that's ok. I've already completed the KG amp and yea that's the right way to do it. I can't hear the channel imbalance so I'm not sure what happened the first time. Mine only has 6 pins....