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Yup - hidden in Robert’s secret schematic drawer - there must be some issues with it being public, I imagine Mr Reed - Smith is the litigious type !!!

Thanks man - when you say a few - under any particular number ? I really find the maths side of things difficult !

Hey all, So I am thinking about doing some layouts with 1/8w resistors as I am only using 50x50 boards and space can be tight. I’m bewildered though… Everything I read says that the lowest ohm resistor you can use is around 650r if running 9v and connected to the power rail. 1/4w resistors...

Hey, thanks for replying: So is it that easy? It’s two different treble boosters and the ROG Britannia. There are lots of components coming off the 9v, certainly on the Britannia.

Hey all, so I am a thinking of cobbling together a single pcb with 3 different circuits on that will be switchable. Now my issue is the 9v power. If all three run through the same 9v power rail they will all pick up each others filtering etc. How do I best go about separating the 3 circuits on...

Good luck dude, fyi - I would not bother with the switch to swap between the Cornish and Plush - the difference is so negligible.

I hear you Mike. I’m just happy I have been able to positively contribute to a thread.

So it’s built and these are my findings. That 22k makes not a jot of difference, or at least not one I can hear. As my breadboard didn’t turn up, I made a slight amendment to the layout and socketed it. I went between that and resistor leg clipping 😂 The difference with adding in C5 and R7 is...

I’m supposed to have a breadboard coming tomorrow (I don’t actually have one) but there is no sign of it being here. If it should turn up, I will have a go but it will be my first time breading anything. I defiantly have some bc109s and bc239s plus all sorts of others, accept bc149.

Nice info Mike - I’m building it up tomorrow and will audition a few different transistors.

Ffs shits getting too heavy for me now - might knock up an npn Rangemaster 🤣 To confuse things further, here is another schematic for the bc149 - which, well ….. the plush. No extra 22k and includes C5 and R7. Go figure.

Ain’t no one got time for that amount of kajiggering 😂 I wonder what difference that ol 22k makes. I may breadboard it tomorrow and find out !

I’m certainly going to socket it - I’ve never used a bread board, I must invest in one !

I was also considering two different transistors on a switch but I am unsure if there would be enough mileage in it !

Here we go ! I was hoping my Vero order would be here today but sadly not !

@mkstewartesq have you tried the KAT volume pot (I’m making a presumption you have a RS) that makes a huge difference as to rolling back the volume for the chime. I used to make them and sell them on eBay, stupid easy to do !

Thanks Mike, I shall have a stab at putting together a layout for it. There is a supplier here in the uk that has NOS BC149s, will grab some.

Hey Mike, like you I am a huge Brian May fan. I have built the Cornish TB83 which I love, the Fryer Deluxe, just about every incarnation of the Rangemaster. Couple of days ago I built an 83 with a AMZ pickup thingy in it, interesting. I’ve not done a BC149 - don’t suppose you have a layout 😏...

Nice man, I’m going to spend a bit of time studying yours - I’ve found it really I interesting having a go !

Thanks for all your help. I shall jump back on layout tomorrow and fettle away !