Asteroid Layout

oggidog · Post by **oggidog** » Sat Jul 14, 2007 1:57 am

[quote="bnwitt"][quote="oggidog"]Say, are the chassis dimensions the same as a Trainwreck chassis? Thanks.[/quote]

No[/quote]

my apologies...
vaya con dios

bnwitt · Post by **bnwitt** » Sat Jul 14, 2007 2:20 am

no apologies necessary Oggidog.

Munga · Post by **Munga** » Sat Jul 14, 2007 3:13 am

bnwitt wrote:no apologies necessary Oggidog.

What are they?

bnwitt · Post by **bnwitt** » Sat Jul 14, 2007 3:05 pm

19.25 x 7.25 x 2.5

edit: Brownnote is correct

bnwitt · Post by **bnwitt** » Mon Jul 16, 2007 9:23 pm

At the suggestion of a builder I have made some changes to the drawing to clarify some connections. Wire color changes and some notes. The new version is #12.

Tonewolf · Post by **Tonewolf** » Thu Jul 19, 2007 11:25 am

This being my first post I'd like to say that the work done here is fantastic!

Is there a straight forward schematic for this build? I'd like to study the differences between this and a Wreck.

galtjunk · Post by **galtjunk** » Thu Jul 19, 2007 4:30 pm

Does anyone offer a chassis for this build?

txbluesboy · Post by **txbluesboy** » Thu Jul 19, 2007 5:24 pm

I second Tonewolf's request for a normal schematic. These layout drawings are wonderful for the build phase, but it really helps to have a schematic to understand the circuit. I agree that this is great work!!!

Tonewolf · Post by **Tonewolf** » Thu Jul 19, 2007 8:38 pm

I'd like this information to study and see how it ticks. It is a personal challenge to myself to build a solid state pedal to get as close as I can to the real amp. I'm open to advise as always.

bnwitt · Post by **bnwitt** » Thu Jul 19, 2007 11:14 pm

galtjunk,
I believe Allynmey knows where to get chassis for this project. PM him.

Tonewolf,
ewww, you said the SS word. Check your pm box.

Tonewolf · Post by **Tonewolf** » Fri Jul 20, 2007 6:52 pm

bnwitt wrote:galtjunk,

Tonewolf,
ewww, you said the SS word. Check your pm box.

Yeah I know. I love tubes too but this is something I want to try before building a real amp. I have quite a few ideas and the pedal may come close for those that can't spend on an amp right now. [Ummm like ME]

I just have to figure out how to bias each JFET or whatever I use to the correct percentage of the supply voltage. Any Ideas? Anybody?

Could I use the same voltage divider?

pbrommer · Post by **pbrommer** » Fri Jul 20, 2007 7:48 pm

These guys took the idea from other sites and ran with it to sub JFETs for tubes.

http://www.runoffgroove.com/fetzervalve.html

This article shows how to replace a tube with a JFET (not perfectly, of course). Normal bias is 1/2 V+ (with a 9V supply, ~4.5V), but you should set it to ~4.5V, but then tune by ear (I used trimpots). This should help.

Patrick

stevlech · Post by **stevlech** » Fri Jul 20, 2007 8:09 pm

The inspiration for that site was a pedal by Doug Hammond called the "Meteor" which was an Express circuit in SS form.

andrew · Post by **andrew** » Sat Jul 21, 2007 3:09 am

That is Doug Hammond ( of the 6SL7 Octal Fatness fame )

stevlech · Post by **stevlech** » Sat Jul 21, 2007 6:53 am

Message corrected.

Thanks.

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Looks great!

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Although I have interest in amps....

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