#srpp

Evening.

Just thought I'd post a quick progress report.  It fired up just fine, passed signal but also had a fair bit of hum.  Using my powers of deduction, guesswork, I surmised that it would be a poor grounding scheme at fault.  I think I mentioned that in my previous post.

Well I was right.  Fnar fnar fnar.

I added one ground wire - that I was sure I was supposed to add - and BINGO.  Lovely sound bass DI.  I'm not going to bother with shielded cabling as it's dead quiet now already.

Pics:

Now if anyone reading this has ever tried to capture the glow of vacuum tubes with a camera, I'm sure they appreciate that second image.

One working Dual-stage SRPP Valve DI?  Yup.  Sounds great too, AND if my initial tests are proven correct a Sansamp esq. pedal in front of it works really well.

Cheers!

P.S. 101 posts?  I need to get out more.

edit: 04/07/13 - Clearing my work PC I stumbled across this:

Yeah yeah.  I know its been a long time.

So what to do?  How about finish something?

A seemingly long time ago I started a Valve-DI build.  I combined it with an Alembic Preamp, changed my mind and decided to make it as a carry-box type thing.

The proto looked like this:

Then I needed to move it into one of these:

Using one of these (from Razorlab):

And.... Begin....

Try a loose fit to make sure it all goes in nicely:

Make sure the power is done PROPERLY. ALWAYS MAKE SURE!  Commit to a layout and proceed!:

Take a photo if you know you'll forget how the pots are wired:

And DONE?:

Time to power test (already done the basic supply checks BTW) with all the components in.  Using an RCD and rubber gloves, eye protection, life insurance and a massive slice of good luck:

Dunno if you can see, but she be glowin'.  I'll give it a quick signal test but I need to do a bit more wiring before I'll fully close her up:

check grounding scheme

use shielded cabling for signal

see if there is a 'good' gain staging methodology to use

 All in all though - it's cool to be building/faffing with stuff again - and i'm sure it'll sound great.  I'm currently thinking I'll clone a Sansamp of some description and double DI the bass:  Neve-> LA4 and Sansamp->SRPP and see how she sounds.

Given how good the Neve sounds going into the LA4 it'll just be the icing on the cake if its a go-er!