That worked. I measure about 20k on the signal line when power is off. All other wires (except ground) are open. The 5K pot is a bit too much (top 1/3 doesn't do much) though usable. 3-3.5k seems best. My pot measured 5.8k so I put an 8k resistor in parallel with it so it works well through the full range.
Connection polarity is not important except if you are a normal person you want your pot set up to increase bass when turned clockwise.
Connection polarity is not important except if you are a normal person you want your pot set up to increase bass when turned clockwise.
Thanks for the reply. Although I am handy with a soldering iron I am not an electronics expert..
I was looking to buy one of these pots - 5k0 Log (A) 16mm PCB Mounting Potentiometer
If poss. and I know its a big ask, could you do a wiring diagram for me so I know what connects to what?
I was looking to buy one of these pots - 5k0 Log (A) 16mm PCB Mounting Potentiometer
If poss. and I know its a big ask, could you do a wiring diagram for me so I know what connects to what?
Cheers, what about the two resistorsPin 3 to the left terminal.
Pin 2 to the center terminal.
As viewed from the front.
Well this did not work
I thought my amp was the mrv-m500 however on the top of the amp it says MRX-M55 so potential cockup
I am using a cable with rj12 6pin connectors which are connected pip to pin, no crossover.
I have measures the pin outputs, with the amp off, as follows
Pin 1 nothing
Pin 2 14.7 k ohms
Pin 3 1.5 ohms
Pin 4 nothing
Pin 5 nothing
Pin 6 nothing
I am using a 5k pot with a 10k resistor in parallel which brings the pot to 3.5k
So is the problem the output on Pin 2.
Although I enjoy a challenge I starting to think it would have been easier just to buy the propper knob
I thought my amp was the mrv-m500 however on the top of the amp it says MRX-M55 so potential cockup
I am using a cable with rj12 6pin connectors which are connected pip to pin, no crossover.
I have measures the pin outputs, with the amp off, as follows
Pin 1 nothing
Pin 2 14.7 k ohms
Pin 3 1.5 ohms
Pin 4 nothing
Pin 5 nothing
Pin 6 nothing
I am using a 5k pot with a 10k resistor in parallel which brings the pot to 3.5k
So is the problem the output on Pin 2.
Although I enjoy a challenge I starting to think it would have been easier just to buy the propper knob
Hey guys, I am reviving an old MRV-M500 and I have the RUX knob but not the cable.
Could you open it up and take some pictures? Bottom of the PCB and any markings on the pot would be very helpful.
I suspect it may work with the cable straight or flipped.
Could you open it up and take some pictures? Bottom of the PCB and any markings on the pot would be very helpful.
I suspect it may work with the cable straight or flipped.
Thanks.
I'll snap some pix tonight (it's at home, I'm at work right now)
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