trinityamps.com

Hi everyone,
I finished up the Trinity 15 kit and everything looked good. I went through the Paul Ruby checklist and all the PT secondarys checked out good. Put the tubes in and the filaments heated up and nothing red-plated and everything still looked good. Got to the part about listening close for a little hiss and heard nothing. Plugged a guitar in to confirm my fears and there was no sound at all, except I could hear a very faint noise coming from inside the amp when I hit a loud note. Here's the voltages which are high in several places, but as this is my first build, I'm at a loss:

V1 131--1.34-- -- 131--1.34--
V2 161--1.32-- -- 272--163--
V3 249--66-- -- 244 --45 --
V4 -- -- 7.44-- -- -- 362--256
V5 -- -- 7.44-- -- -- 362 --256
V6 -- -- -- -- -- -- 352

Here's the cap voltages measured from the PT end of the board:

352, 248, 318, 349, 271, 329

I went over the layout several times and everything looks normal. My first thought was a bad rectifier, but I'm a newbie. Anyone have any ideas? Thanks
Gary

If your getting voltages at the caps I would think the rectifier is working. I would check for a bad solder joint to the OT or maybe to the speaker out put jack. Do you have any pictures you can post?

Eddie

I took some pics, but don't know how to post them. I don't have a website.
Gary

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You were right Erl. It was the wiring on those confusing Cliff jacks. I rewired the inputs and the 8 ohm output and that was it. The amp sounds great. Very quiet, only the slightest bit of audible noise. I love the clean sounds of the amp. My wife is always complaining if I play loudly at all, but I think she'll like this one. I'll post some more pics when I get the cab built.
Gary

Cool Glad you got it going.

Eddie

I just looked at your picture of the output jacks. Backward! But I see you got help and you are on your way. I have updated the builders guide with more explicit instructions on this area.

Congrats on your build. It looks very nicely done.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Wiring with all three taps, 16, 8 and 4 (in that order), no line out.

Ooohh. Very nice job. Can I use that picture?

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

of course.... we're all in this together....

Isn't the phase backwards there or are my eyes deceiving me? Shouldn't the common ground go to the sleeve and each tap to their respective tips?

_________________
--s2
www.s2amps.com
www.category5amps.com

the original poster's pic or the one that I posted?

The one you posted of the speaker jacks.

_________________
--s2
www.s2amps.com
www.category5amps.com

I think you are right s2, good job they are not chassis grounding sockets.

they are shorting jacks that I got from trinity. and I just wired them up like the diagram Stephen sent me.

Did I do it backwards?

Well in the grand scheme of things it doesn’t really mater because you were consistent for all the jacks and the jacks are not grounding as well as the speaker not being grounded to the system. The convention is to have the tip be hot or “+â€

If you are not using a chassis ground, it doesn't really matter than much--you can correct the phase at the speaker. What does seem to matter is that the first motion of the speaker cone is outward when you hit a bass note. If the opposite, your speaker is out of phase. I would check that and if it is out of phase, you can either reverse the jacks (recommended) or reverse the leads on the speaker itself.

_________________
--s2
www.s2amps.com
www.category5amps.com

For Coco,
I think it would also help us noobs to redo the layout of the input jacks to show the Cliff jack wiring. I spent more time trying to figure those out than on the entire rest of the amp.
Gary

This is what Trinity sent me...

Does that pic help you out?

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps