Mad Professor Sweet Honey Overdrive

squadbot · Post by **squadbot** » 11 Oct 2010, 00:26

Btw, just a note, I don't see anything here that indicates that r2 is actually 51r. Looking at the pictures from both the japanese version and the original gooped one, It looks like r2 is 47 ohm (yellow-purple-black-gold-brown). The only other mention I see of 51R is from someone's "HBOD guesses" value box. Could someone confirm this?

HEAD · Post by **HEAD** » 11 Oct 2010, 07:24

Dude, we're talking about 4Ohm! In this application this shouldn't make any difference - it's even in the tolerance range of these carbon film resistors (5%) Mad Prof uses by chance. And stop caring about the capacitor types! As long you have the right values and you use film box (whatever) types an ceramic caps where he uese it should be just fine. No rocket science or mojo here.

Helge

squadbot · Post by **squadbot** » 11 Oct 2010, 11:43

HEAD wrote:Dude, we're talking about 4Ohm! In this application this shouldn't make any difference - it's even in the tolerance range of these carbon film resistors (5%) Mad Prof uses by chance. And stop caring about the capacitor types! As long you have the right values and you use film box (whatever) types an ceramic caps where he uese it should be just fine. No rocket science or mojo here.

Helge

Whoa! Didn't think it would be that explosive of a question. I'm by no means trying to be snooty about wanting only specific capacitors or about pointing out a 4 Ohm difference. Sorry if it came across that way. Just asking because I'm trying to be careful to do the build right and I wanted to know if little things like that are something I should be concerned about. Thanks for putting my worries to rest

roseblood11 · Post by **roseblood11** » 11 Oct 2010, 12:01

At last it´s your ears that should decide... If you would replace that resistor with maybe 470 ohms, you would hear a difference, because it limits the supply voltage of the circuit.

Talking about the type of caps is a religion for some people and bullshit for some others. I would say: Use simple polyester film caps where you can get the right values in 99% of all situations. Above that value range, use good electrolytics (Panasonic FC, Elna RFS...), if they are in the signal path and cheap ones if they are not. Sometimes it makes a small but audible difference if you replace smaller film caps with polystyrene (=cleaner) or with ceramic (=dirtier). For example, I use polysteren in ultraclean boosters, but ceramics in the feedbackloop of a tube screamer or a SHOD (the 100pF).

regards, Immo

Kuu_uni · Post by **Kuu_uni** » 31 Oct 2010, 15:19

http://picasaweb.google.com/unitandunit ... 8368681362
http://picasaweb.google.com/unitandunit ... 7816219970

Hi! I made it"Sweet Honey mini"!

Thanks.

roseblood11 · Post by **roseblood11** » 31 Oct 2010, 18:27

Nice built!

Post your layout, please... Will be interesting for some people

glasstone · Post by **glasstone** » 14 Feb 2011, 13:30

Here is a gutshot of mine sweet honey.

roseblood11 · Post by **roseblood11** » 14 Feb 2011, 13:43

Is it different from the one that was posted at the beginnig at the thread?

Cerberus · Post by **Cerberus** » 17 Mar 2011, 07:12

Just curious, what does the 5.1 zener and 1k resistor do before the led, just a current limiter?, never seen that done before.

Sari · Post by **Sari** » 21 Mar 2011, 00:12

Cerberus wrote:Just curious, what does the 5.1 zener and 1k resistor do before the led, just a current limiter?, never seen that done before.

Been done on most Boss and Ibanez pedals

pete_po · Post by **pete_po** » 28 Mar 2011, 20:35

hey guys,
I've just breadboarded this effect, using the parts listed
(op275 made by AnalogDevices, poly film and electrolytic caps, some red 3mm LEDs and 1n4007s. yeah, and resistors

)
it seems to be built right, and the attack sounds right (and awesomely like the real SHOD demos, too), but there are some fuzzy trails, which are not very nice.
the same kinda weak fuzzy sound appeaps when playing softly or turning guitar volume down
so what could it be? defective opamp? clipping LEDs maybe?

pete_po · Post by **pete_po** » 25 Apr 2011, 07:10

don't really know what that was, but after actualy making this effect (pcb and all) i found it worked just fine

now this is totally my favorite OD (i also built it with footswitchable LPB in front, so this pedal and my tele are all i need in terms of overdrive, really)
so, anyway, thank you guys, you did a great job tracing this effect

Mochizuki · Post by **Mochizuki** » 25 Apr 2011, 12:08

hi! this is my first post and i'm gonna make myself look like and idiot with it... but whatever. is it necessary to use red LEDs? i bought 3 of them, but i accidentally destroyed one and now i need to replace it somehow, but i dont want to order one LED, it would be crazy, as there is no shop with stuff like this in my town and i'd have to buy it via internet. but i could use blue LED from my PC speakers...

so, is the difference between red and blue LEDs just the plastic cover or is it something magical inside that would make my sweet honey suck with blue LED?

roseblood11 · Post by **roseblood11** » 25 Apr 2011, 12:44

The sound will definitely a bit different, but maybe not in a bad way. If you use one red and one blue, the clipping will be a bit, asymmetrical.

Mochizuki · Post by **Mochizuki** » 25 Apr 2011, 13:44

and all 3 of them must be the same color? or D3 and D4 have to be the same color and it doesnt matter really what color D5 is?

roseblood11 · Post by **roseblood11** » 25 Apr 2011, 18:01

A few basics:

http://geofex.com/Article_Folders/TStech/tsxfram.htm
http://diy.musikding.de/content/view/12/13/
http://www.mylespaul.com/forums/pedals/ ... rcuit.html

Every diode change makes a difference...
Maybe you should use sockets and try different combinations!

roseblood11 · Post by **roseblood11** » 25 Apr 2011, 18:03

Sometimes I hate that there is no Edit button...

https://www.diystompboxes.com/smfforum/ ... ic=82764.0

pete_po · Post by **pete_po** » 19 Jun 2011, 10:27

yeah, by the way, nobody's posted that yet, so here's my pcb version of the SHOD. caution: this might remind you of something

: SHOD-pcb.gif (7.01 KiB) Viewed 3406 times

and also, to add to the previous discussion: i've tried quite a few different types of LED's and they all sounded pretty similar to me, at least after 20 seconds required to change them. so i went with the yellow ones... you know, it's sweet HONEY overdrive

Website · Post by **Lonkero** » 17 Jul 2011, 18:40

I just put this on bredboard. Damn, one of the most dynamic pedals I've ever tried. But the basic tone is horrible! Much like Honey Bee it has this really annoying tone that sounds like a thousands bees were flying around you

I guess BFJ really nailed the name right.

When I pick softly, the tone is good but hitting harder gives it this horrible mid-rangey bee tone. I was thinking how to alter this pedals basic sound without losing the great dynamics it has got. Any ideas guys? I tried changing the caps to smaller ones but that didn't help. Or maybe it's just that the great dynamics this design has comes with the price of the horrible bee tone

dudeduck · Post by **dudeduck** » 29 Aug 2011, 02:50

pete_po wrote:yeah, by the way, nobody's posted that yet, so here's my pcb version of the SHOD. caution: this might remind you of something
SHOD render.gif

SHOD-pcb.gif
and also, to add to the previous discussion: i've tried quite a few different types of LED's and they all sounded pretty similar to me, at least after 20 seconds required to change them. so i went with the yellow ones... you know, it's sweet HONEY overdrive
SHOD photo.JPG

How bout using a yellow led and a red or blue to make it clip asymetrically?

This is my first post since the forums got back online

Mad Professor Sweet Honey Overdrive [traced]