Biyang Tonefancier Blue BL-8

blue4me · Post by **blue4me** » 17 Jun 2020, 19:30

I really like this pedal. I’ll work on a schematic in a bit but here’s pics for now. I’m wondering what it’s derived from.

It’s very warm (no treble), has loose bottom, very smooth, a ton of output. Only thing I could see wrong with it was some nuts were loose.

Renegadrian · Post by **Renegadrian** » 29 Dec 2020, 17:30

Did you manage to work the schem out!? it seems a little but funny circuit...curious to read it!

EddieTavares · Post by **EddieTavares** » 29 Dec 2020, 22:33

It looks like a proco rat without the output buffer and leds instead a diodes, it's easy to implement a tone control.

CheapPedalCollector · Post by **CheapPedalCollector** » 30 Dec 2020, 09:35

I was about to say yeah, it looks like a RAT.

Manfred · Post by **Manfred** » 30 Dec 2020, 20:10

I made this PCB clone for tracing, can you please put the component values in the picture with the components.

Renegadrian · Post by **Renegadrian** » 30 Dec 2020, 21:08

Right! Just got one today for cheap, man let me say it's one of the worst pedal I've ever played! it can get some use with just a zic of gain, turn it up and you get lifeless mud sound...

Renegadrian · Post by **Renegadrian** » 30 Dec 2020, 21:21

UPDATED!

Manfred · Post by **Manfred** » 30 Dec 2020, 23:38

This pedal is similar to the FAME Slasher DS-10, so I just had to edit its schematic.
viewtopic.php?f=1&t=30326&p=278466&hili ... er#p278466
Can you please measure the values of the potentiometers and the resistors?

BiyangTonefancierBlueBL-8Layout_2.JPG

Biyang Tonefancier Blue BL-8 Schematic.JPG

Renegadrian · Post by **Renegadrian** » 30 Dec 2020, 23:52

gain is b100k and volume is b10k

Manfred · Post by **Manfred** » 31 Dec 2020, 06:57

Renegadrian wrote: ↑30 Dec 2020, 23:52 gain is b100k and volume is b10k

Thanks, are the resistance values correct, have you already checked them?

Renegadrian · Post by **Renegadrian** » 31 Dec 2020, 07:57

Did you read my previous post!?

Manfred · Post by **Manfred** » 31 Dec 2020, 14:49

Renegadrian wrote: ↑31 Dec 2020, 07:57 Did you read my previous post!?

Yes I did, you wrote in the previous post:

Got a problem with 1/8 metal resistors, quite difficult to read for me, guess it will be easy for others to complete the schem.

Therefore I wrote:

Can you please measure the values of the potentiometers and the resistors?

I think we are talking at cross purposes, did you measure values of resistors to confirm them?

Renegadrian · Post by **Renegadrian** » 31 Dec 2020, 14:53

Right, I wouldn't read those damn resistors, I just measured with MM.
The previous image I uploaded has been updated.

Guess I'll transform it into a grey dod 250, it should be quite easy.

Manfred · Post by **Manfred** » 31 Dec 2020, 15:51

Renegadrian wrote: ↑31 Dec 2020, 14:53 Right, I wouldn't read those damn resistors, I just measured with MM.
The previous image I uploaded has been updated.

Guess I'll transform it into a grey dod 250, it should be quite easy.

Thanks a lot!

Manfred · Post by **Manfred** » 31 Dec 2020, 18:50

Here the verified layout and the verified circuit diagram.

CheapPedalCollector · Post by **CheapPedalCollector** » 31 Dec 2020, 23:27

Super easy to add a tone control to that and make it into an overdrive with a couple 100k pots.

Renegadrian · Post by **Renegadrian** » 01 Jan 2021, 01:26

small correction on the schem, gain is 100k linear not log. please change accordingly.

Manfred · Post by **Manfred** » 01 Jan 2021, 17:27

Renegadrian wrote: ↑01 Jan 2021, 01:26 small correction on the schem, gain is 100k linear not log. please change accordingly.

The potentiometer type I have changed circuit diagram above.

xfree · Post by **xfree** » 13 Feb 2021, 00:50

I want to mod this with a tone knob, i find it too wooly at times on high gain....but perfect tone on the low gain

wildschwein · Post by **wildschwein** » 15 Feb 2021, 12:23

Love this pedal -- huge thick tone with good sustain. Great with single coils.

Biyang Tonefancier Blue BL-8 [schematic]