Building an Amp

Old RCA Jacks

First I had to remove the old RCA jacks.

Done.

The old and the new jacks.

The new jacks are bigger, that means that the back plate is hold by them, no extra washers needed.

Making the holes larger: too 10 mm.

The new jacks mounted.

Not the reason to change these jacks, but the new ones look much better.

Connected as well. The brown wire is the ground, it goes too the bus-bar.

Ground connection too the bus bar.

Testing, very exiting.

I'm so happy, the hum has gone completely!