1977 OD 250 layout

[markm]

Hi y'all,
Just added the verified layout for the 1977 OD250 in my gallery,
Please give it a look if you're interested. It is verified and up & runnin'!
I really, really LIKE when that happens   
It is kind of a tight build but, it's the challenge for us isn't it?

[tungngruv]

How do you like the sound?

[formerMember1]

yeah, I would too like to know how you like it?

[jimbob]

According to the layout there is 2 1n4001's. I thought they used 1n914's? Great job though!

[markm]

According to the layout there is 2 1n4001's. I thought they used 1n914's? Great job though!

It is my understanding that the later model of the 250 used 1N914, the early version which this layout attempt to re-create used 1N4001's.
I used the info provided by jhs in this post;

http://www.diystompboxes.com/smfforum/index.php?topic=46548.0

How do you like the sound?

The sound is quite different than the regular OD250 we all know and love.
It is alot more mid-heavy than the later version + it is gritty through the whole rotation of the gain control.
It still sounds like an OD250 but, more mid-rangey and a bit more raw but compressed.
I don't how much I like it or not as I have only played around with a it very little and, the jury is still out.

[tungngruv]

Great, another one to add to the list!!!!! Thanks again for the layout, looks great and this Grey 250 layout and build will probably be around a long time (for good reason). I'm a sucker for the 250 so I guess I'll start gathering the parts tomorrow..

[MartyMart]

I'm liking the sound of this ( vero built from Marks layout ) very much !
I had almost all the required parts, but no 0.05 ceramics ! ( dont use 'em much )
I tried the 2x 1N4001 but prefer "assym" clipping as a rule so swopped one for a
small rectifier diode, about half the size of a 4001 but "fatter" ( BYD74 )
Jeff Musser sent me some of them - thanks

It's a nice "Gnarly" overdrive and quite smooth/warm sounding, I need a better
gain pot, as I only had a 1M log, reverse log would work best I think, so I have a
lot of almost "clean" area with OD at around 75% travel.
My 50k log volume pot works fine.
Great, cheers Mark !

MM.

[markm]

Hey, thanks so much Marty!
An interesting note here is if you read through the "gut-shot" post, JHS used 1N4002 diodes in his build and stated that they sounded more "musical".
May be a good thing to try too!

[markm]

I added a Perf version of this to my layouts gallery.
I hope this is helpful to some of you.
  MarkM

[Moonface]

Can you make a vero layout?? 

[markm]

I'm not really a user of vero but, I'll see what I can do for ya.

[Moonface]

Thank you Mark!