The connector is a 5 pin Molex and should be as follows (note pin 1 is near the end of the connector with the wedge shape:

pin 1, white wire (to reverb tank input, longer of the two reverb cables

pin 2, shield/ground from the longer cable

pin 3, no connection

pin 4, white wire (to reverb tank output, shorter of the two reverb cables)

pin 5, shield/ground from the shorter cable

It should be noted that the reverb tank used has the input ground isolated from the body of the reverb tank. The output of the tank has the jacks shield connected to the tanks body. With the configuation I found the output signal was attached to the body of the tank. Just touching the tank caused in increase or different sound in the reverb return circuit!

I substituted a cable assembly from a second Nashville 400 I had to resolve the issue. Perfectly quiet reverb now!

I have ordered a Molex pin extractor tool to correct the pin arrangement on the old cable assembly.

Considering the number of complaints about reverb hum in teh Nashville 122 makes me wonder if a wring reversal could have occured on some of the Panduit connects they are using. Easy to do! I have alread seen a N-112 with theh Panduit cable plugged in backwards, resulting in reverb tank input to amp reverb input and reverb tank output to amp reverb output. Amp still had reverb, just a lot of hum.

Human error is easy when making up a Molex or Panduit style connector. I made up thousands of the Amp (red) and Panduit(white) style connectors when installing Raulnad Borg and Dukane school intercom systems (in my working days)! Made a few errors myself, easy to do.

[This message was edited by Ken Fox on 25 March 2006 at 05:54 PM.]

I worked on it several times, it "blew up" during warranty and Peavey repaired it (took care of it without any questions - great service from Mike and the crew). I worked on it some more after it was repaired by Peavey and still had hum. I kept blaming the Molex connections (although I did have connection problems with the Molex connector).

In the end there was a hairline crack on the PC trace for one of the male Molex pins (one of the grounds) that was soldered to the PCB. Once I repaired that - no more hum!

My 112 has reverb hum and I've never got into it as I don't use the Peavey reverb. I use the "spring" reverb in my POD XT.