Output grounding issue

[basschops1528]

Hi guys,

Finally finished my amp and everything seems ok so far but before I fire it up (after Paul Ruby's checklist was completed!) I noticed there was continuity between ground and the output pin on the speaker jack with an unused 1/4 jack plugged in (so no wires soldered onto it, both tip and sleeve open). Of course there was continuity with no jack plugged in as I wired it just like sluckey suggested below (grounded output when vacant), but it doesn't seem to matter. My feeling is that I have the wrong jacks. They are four pin jacks if you see the "No" tag on the image below (it looks like there's pins but there's not). Any ideas what's wrong?

P.S. The jacks are opposite for the sake of the main jack on the left when the amp is turned up. In the picture, the top of the amp is facing down, obviously.

[sluckey]

There's no problem. The secondary winding of the OT has a resistance that is probably less than 1 ohm. If you disconnect that OT lead the continuity will go away.

[basschops1528]

Worst case the current limiter bulb lights up or fuse blows?

[HotBluePlates]

Worst case the current limiter bulb lights up or fuse blows?

No, worst case would be no sound from the speaker.

Except as Sluckey said, this is normal. Every guitar amp I've ever seen will indicate continuity between the speaker jack terminals because the low resistance of the OT secondary is the low-resistance path which your meter is detecting.