BJF - Honey Bee Overdrive degooped  [traced]

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aegert
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Post by aegert »

SO I built up the Madbean project. The only issue is that the overall output volume is below unity. I check out demo's of the Bearfoot and BJFE on you tube and this seams not to be an issue at all. I think others have seen this before. I have a 2n5457 in output buffer with a 5.6k Bias resistor..

Has anybody messed with this and or a bypass cap on the 2.2k to ground?

Would love to here some input and increase in volume.

Just a a sanity check here are some voltages:

IC1
1: few 100'ths of a V
2: 4.09V
3: 3.9V
4: few 100'ths of a V
5: few 100'ths of a V
6: 4.1V ( should this be closer to the supply voltage?)
7: 8.2V
8: 4.3V

Q1
1: Drain: 5.3V
2: Source 1.1V
3: Gate 0V

Any Ideas would be greatly depreciated ;-)
A

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aegert
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Post by aegert »

i swapped out q1 for one that biased to about 4.9v and it was a small bit better but looking at the videos there seams to be a bunch more volume out of the Vol pot. Unity was below 10:00... I have to dime the vol knob to even get slightly close.

The eq of the pedal is slightly dark. I would bet this accounts for some of the perceived volume decrease. I read on the forums about some changes to c10 or c9. I am sure I change the filtering to move the knee a pit more north it will pick up some volume. Has anybody solidified a good value.

I recently built another project and it turned out after I got nutz that it wasn't doing the trick. So...my OCD made m buy the real one and de bug it. There was a difference between the verified schem and the real pedal. I posted my findings.. I can smell me getting stupid again.. I just don't want to spend $300+ to figure it out ROFL..

The pedal plays well. any thoughts would be killer

Lastly what version of the CA3130 is everyone using. I have EX, AE and EZ...

a :D

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rousejeremy
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Post by rousejeremy »

Built this using Mikes vero. It's a pretty tight fit in a 1590b, possibly just the vero I was using.
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Post by rousejeremy »

A better shot of the finish
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And a gutshot of the vero that just fit.
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Post by Barcode »

velsa61 wrote:What did i do wrong......some extra eyes might help on this one!!!!!
What it does ,is some sort of strange low frequency "broooom" and when i twist that drive knob from 3 o'clock to all the way up, it disappears but so does the original signal....???
I tried with 3 different 3130's.....same story!!!
(i also tried with TLO 72c & RC&JRC 4558's but nothing came through.....dead silence!!!!)

I marked the photo of the solder side vero with red circle where i managed to tear off some copper but i don't think means a thing coz the leg of the op is still connected!!!!

Here's a photo of it.......

https://i42.photobucket.com/albums/e336 ... weetOd.jpg
Did this ever get solved? I'm setting the exact same behavior from two separate yellow shark builds on madbean boards. bothare exhibiting that weird low freq oscillation at the top of the drive, and the volume does this weird thing where at minimum, it has audible signal, which gets lower as I turn up, but then "pivots" and starts going up again. the only thing that seems to work is the nature knob. Thoughts?

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Post by gigelmargel »

Hello all!

I've just finished a clone of Honey Bee using Madbean's Yellow Shark 2.5 layout (thanks for it, Madbean!), but it sounds strange.
The decay of the notes it's abrupt...it sounds gated, with a little sustain...I used a CA3130EZ and a CA3140, with the same result...I tried 2 red 3mm LEDs and 2 green 5mm LEDs, but the same sound...I've rechecked all and it's seems to be OK...one LED lights all the time at some settings of the gain pot and the second lights following the notes...at another settings, both of them lights the same...

Anyone have the same problem? Any ideea to help me?

Thank you very much!

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Post by gigelmargel »

:hmmm:

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Post by TheLemon »

The LEDs should be lighting at the same time, all the time. You might have the LEDs going both the same way. Try flipping on of them around. Also check to see you used the right value resistors, and everything is connected right.

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Post by gigelmargel »

TheLemon wrote:The LEDs should be lighting at the same time, all the time. You might have the LEDs going both the same way. Try flipping on of them around. Also check to see you used the right value resistors, and everything is connected right.
Thank you TheLemon for your advice!
I recheck all and, of course, it seems to be OK :)
I made some mods to it (as in the Barefoot version) and LEDs lights in the same way, but the overdrive is gone (now it's more like a clean booster), so I will try to modify it back :)
Anyway, I saw on Madbean's Forum and in the user manual of BJFE that the pots doesn't act liniary and the pedal doesn't have much sustain, so, maybe, the first version was a good one...but the problem is that it didn't sound as in the demos...

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Post by biliousfrog »

I've built the Honey Bee according to IvIark's vero layout and I'm having problems with it.

I've found that using green LED's caused gated, fuzzy, pulsing distortion - anything higher (such as blue) made it unplayable. I put the red LED's in and it behaved OK but squeals and gets fuzzy at higher drive settings. With the drive backed off a little it actually sounded quite nice (through my 5w H&K Tubemeister amp). I took it to rehearsal last night and it sounded gated, fuzzy and oscillating (through Laney LC30) - completely unplayable.

If I take the LED's out it works ok - through the H&K it barely sounds any different, through the LC30 it loses most of the clipping (obviously).

I'm a bit stumped by what is causing this. I've changed the IC and the transistor. One of the 1N4001 diodes (1N4007 replacements) came from a different supplier so I could replace that to ensure that they're all equal (or thereabouts). I didn't check the Hfe of the 2N5952 - would that make a difference?

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Post by biliousfrog »

If I use just one, green, LED I can play it like a theramin...the drive and nature controls change the sound and I can change the pitch by moving closer to the LED...It's quite cool actually.

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Post by biliousfrog »

Fixed!

I notice that there's a separate thread for the bearfoot one so sorry for that.

I replaced almost every component...then spotted the 100pf cap on the vero that I'd missed off the board, DOH!

Finally works although I'm unsure of the nature knob should clean up the signal when increased? I actually preferred how it worked before - minus the squeals and gated fuzz.

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