Cornford Hurricane layout

[10thTx]

The V3b plate (listed as pin #1) coupling should be .0047uf vs the 1000pf listed. Also, the reverb pot should be 250k log vs the 22k linear listed. I don't think the V3a 68k grid-stopper belongs there either, but may be useful

Thank you! I am appreciative of your taking the time to offer the information and correction. Nice of you to do so.

With respect, 10thtx

[67Mopar]

The V3b plate (listed as pin #1) coupling should be .0047uf vs the 1000pf listed. Also, the reverb pot should be 250k log vs the 22k linear listed. I don't think the V3a 68k grid-stopper belongs there either, but may be useful

Thank you! I am appreciative of your taking the time to offer the information and correction. Nice of you to do so.

With respect, 10thtx

You are most welcome. If you need any more information on this circuit, just send me a PM.

[dorrisant]

Looks like the layout has an(other) error. The 22k resistor goes from the wiper of the Treble pot to the #3 lug of the Master, not the wiper of the Master...

Anyone catch anything else that doesn't jive?

[67Mopar]

Original drawings sent!

Several edits were made to this circuit over the years, so expect differences depending on the production year.

[kanderson70]

bumping this guy up since I just started my build of it.

I see this is an old thread, but has anyone built this from the layout/schematic attached from the OP? (Because that's what I'm using except I'm using an 18 watt 290v PT. )

So if you have built this, did you have any issues with the layout? I've just begun on it so just wanted to get some feedback from anyone who has built this.

Thanks,
~ KA

[dorrisant]

I have built one. Check here: https://ampgarage.com/forum/viewtopic.php?t=28360

I did not it use this post for my build. I did my own layout much like this one. It worked just fine. Built and sold it years ago, and as far as I know, it gets gigged on a regular basis to this day.

[kanderson70]

I have built one. Check here: https://ampgarage.com/forum/viewtopic.php?t=28360

I did not it use this post for my build. I did my own layout much like this one. It worked just fine. Built and sold it years ago, and as far as I know, it gets gigged on a regular basis to this day.

Ah yeah! The old 10 lbs of Crap in a 5 lb chassis thread! Great build and layout BTW! You did some modifications by removing the reverb though didn't you? I see you used the same schematic though so maybe I'm good to go. I'm just waiting on the transformers to come in.

[CraigGa]

I know this is an old thread but I thought I'd weigh in about B+

I have a Cornford Roadhouse 30 and it measures 414V on the EL84 plates, it is cathode biased at 25V though so it's not really so high

Craig