How To Make A Mr Speakers Mad Dog Pro Cable

I love my Mr Speakers Mad Dog Pro headphones but the included 6ft cable is too short. Below are my notes on making a longer or shorter unbalanced stereo Mad Dog Pro audio cable.

What you need

• e- valucon SN-8-4(P)
• Canare L-4E6S Quad Mic Cable
• TRS Connector

You can use a 1/4 or 1/8th TRS adapter depending you your needs. I used a Rean Neutrik NYS228G 1/4th connector.


The pin layout:

1 = L+
2 = L-
3 = R+
4 = R-






There is a notch at the top of the SN-8-4(P) connector that you can use as a reference. Each pin is numbered but it is incredibly difficult to see the number when soldering.

1 = L+ used for left audio channel
3 = R+used for right audio channel

2 = L- ground
4 = R- ground


You should strip the Canare cable about 3/4th of an inch. Twist each strand tight, going with the natural bias of the wire, and then tin each strand. Measure each strand against the e-valucon plug and trim the strands down appropriately before soldering. It doesn't take alot of solder to make a solid connection to the e-valucon SN-8-4 plug. Patience and a steady hand is key.


Soldering the TRS adapter is much easier. Twist the L- & R- cable together and tin them with solder to form a common ground. Then solder the common ground, left and right audio channels to the appropriate connections.