mmmmm, thats why my footswitch only works when toggles are set to manual!. I thought I had just wired it wrong!!

I'm still trying to find a good source here in the UK but it seems you can't get the same makes, and I don't know which are good and which aren't. You can get Spragues here http://www.hotroxuk.com/store/erol.html

But his supply of resistors is very limited.

I'm planning on doing my mod on my OT in a couple of days.  Just waiting on the parts to arrive.  I have been going through the list that Jack posted and comparing it to the tweaked layout.  I see only 1-150k resistor highlighted in red on the layout....the list calls for 2-metal film and 2-carbon film 150k resistors.  Which one do I use?  (Metal or carbon) Are the overage parts spares?  Sorry...noobie just wanting to be sure it's done right 
Mahalo (Thanks)!!!

hey poipounder57

Yes, there are some parts in Jack's list that aren't needed. I believe the 150K resistor is one of those, perhaps the only one as I recall.  Where I could, I just replaced like with like. It's nothing to be too concerned over. If we get to the point where we start trying to hear the difference between a metal film resistor and a carbon based one, we're over the top IMHO.  That's when this guy starts heading for the door!


Ken

Mods finally done on mine. Massive improvement in the clean setting.  Blackface Fenderish.  Overdrive is also improved, but I'm getting much better sound from a bridge single coil than a variety of humbuckers.  My Seth Lover PAF doesn't sound very good at all.  It's in a Gibson scale length neck.  Suggestions?

I had similar issues with a set of SD antiquity's in my Les Paul- they sounded a bit too 'dark'?  I solved this by replacing with humbucker sized P90's (single coils) which I much prefer- now I'm getting that David Gilmour neck pup tones and much more bite from the bridge.  Speaker type will also play a huge part- I love the G12-65 for lead tones- but it lacks a little sparkle for clean- so I'm having a cab built combining a G12-65 & either a Vintage 30 or Alnico Gold inside.  Try a brighter speaker- you can always cut the treble for Strats!

chipdog -

In a nutshell, a cap/resistor with a higher voltage rating is actually good. In the case of a cap being .47uf vs. .50uf, well, that's pretty close and getting the exact values aren't always possible. When you take the tolerances into consideration, +/- 5% in most cases, it's essentially the same callout.

Note that tighter tolerances are often preferred but you often pay a price premium for it. In most cases a really high tolerance, such as +/- 1%, isn't req'd. There are a couple of instances where that tight a tolerance is called for and I would stick with those for where they have been indicated to be used on the layout.

Hope that helps a bit.
Ken

chipdog

Nicely laid out list. It looks correct as far as I can tell. To be smart, I think it wise to order a few more (2-3 maybe?) of each of the parts, particularly the large 470 ohm 5 watt resistor. They fit into a tight spot on the base of the power tubes and I boogered one up trying to get the bends correct. Better to have a few left over than come up short and have to re-order and pay an extra shipping fee.

Besides, more mods may come up and you might have a leg up on them with a few extra parts around. You just never know!

Cheers -
Ken