Proel - DS10 Distorsion  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
User avatar
EdJ
Information
Posts: 21
Joined: 05 Oct 2010, 11:27
Has thanked: 2 times
Been thanked: 6 times

Post by EdJ »

I`ll check it with mine.
Do you have a picture from the other side of the pcb?

User avatar
sammyxpxp
Information
Posts: 4
Joined: 11 Aug 2013, 08:34
Has thanked: 4 times

Post by sammyxpxp »

Hi Edj

There you go:

http://ppt.cc/l3Gw


The wiring is kinda complex on the jack and switch.

User avatar
EdJ
Information
Posts: 21
Joined: 05 Oct 2010, 11:27
Has thanked: 2 times
Been thanked: 6 times

Post by EdJ »

I can`t see it very well on your pictures but is there a wire going between the led and the resistor as on mine(orange wire)?

User avatar
sammyxpxp
Information
Posts: 4
Joined: 11 Aug 2013, 08:34
Has thanked: 4 times

Post by sammyxpxp »

Edj, thank you so much for the help.

Yes, the orange line is going to the same spot but it is soldered at the back of the PCB. I notice there is a power supply - negative center version while yours and mine are positive center version.

It will help if you would like to show me how the switch and input/output jacks are wired.
:)

User avatar
EdJ
Information
Posts: 21
Joined: 05 Oct 2010, 11:27
Has thanked: 2 times
Been thanked: 6 times

Post by EdJ »

I`ll take mine apart tomorrow and make pictures of the switch and in/outputs.

greetings,Ed

User avatar
EdJ
Information
Posts: 21
Joined: 05 Oct 2010, 11:27
Has thanked: 2 times
Been thanked: 6 times

Post by EdJ »

Mine is wired as follows;

Input(from outside to inside of box)
1 black=to board under 15n cap
2 orange= to board,right next to black
3 green=to board,right nrxt to orange
blue=to C on switch

Output(from outside to inside of box)
1 black=to 2 on switch
2 yellow=to 4 on switch

Switch 1234
ABCD

1 orange=to middle of board,on the left next to LED
2 green=to 3 on 100k pot
black to output
3 black=to 2 on 100k pot
4 yellow=to output
yellow=to D on switch

A empty
B empty
C to Input
D to 4 on switch

Hope this helps.

greetings,Ed

User avatar
sammyxpxp
Information
Posts: 4
Joined: 11 Aug 2013, 08:34
Has thanked: 4 times

Post by sammyxpxp »

Hi Ed,

Thank you so much for the kind help. My pedal comes back to life!

I love the sound of it.

Thank you again!

User avatar
Manfred
Tube Twister
Information
Posts: 1937
Joined: 04 Apr 2009, 23:42
Has thanked: 1671 times
Been thanked: 1344 times

Post by Manfred »

I reddrew schematic, the stomp switch contacts are shown now and create a copy of the PCB-Layout.

I own a DS-10, here the shot of the wiring:
PROEL_DS_10_WiringShot.pdf
(131.86 KiB) Downloaded 182 times
ProelDS10_Schematic.JPG
PROEL_DS-10_PCB_Layout.JPG
ProelDS10Wiring.jpg
ProelDS10Wiring.jpg (27.67 KiB) Viewed 3880 times
ProelDS-10_Components.pdf
(10.5 KiB) Downloaded 172 times
ProelDS-10_Components2.pdf
(3.68 KiB) Downloaded 157 times
ProelDS10_PCB.pdf
(14.74 KiB) Downloaded 153 times
Sprint-Layout60 file zipped:
ProelDS-10.zip
(19.68 KiB) Downloaded 134 times

User avatar
Manfred
Tube Twister
Information
Posts: 1937
Joined: 04 Apr 2009, 23:42
Has thanked: 1671 times
Been thanked: 1344 times

Post by Manfred »

I made mistake in writing it should be called.

I redrew the schematic, the stomp switch contacts are shown now and create a copy of the PCB-Layout.

Why it is the post not editable when it is submitted? :scratch:

User avatar
modman
a d m i n
Information
Posts: 4890
Joined: 19 Jun 2007, 16:57
Has thanked: 4394 times
Been thanked: 2131 times

Post by modman »

sammyxpxp wrote:Hello.
I bought a Proel DS10 Distortion pedal and it's not working, not sure if it is modded. I'll post some pictures can anyone be kind enough to show me some light?
Is the wiring of this pedal correct?
http://ppt.cc/8ufh
http://ppt.cc/pQAu
http://ppt.cc/k78t
The Jack and Switch design seems to be complex. Does anyone know if this is a true bypass or buffer bypass or something?
Thank you.
We have gutshots, a schematic and original pcb layout
What more do you need?
Please, support freestompboxes.org on Patreon for just 1 pcb per year! Or donate directly through PayPal

User avatar
EdJ
Information
Posts: 21
Joined: 05 Oct 2010, 11:27
Has thanked: 2 times
Been thanked: 6 times

Post by EdJ »

Great job!Mine broke down actually.
2 pots had lifted off the board when i put it back together taking the copper traces with them.
Been too busy to make a new board so this comes in very handy.
Thank you very much!

User avatar
rhandy gaye
Solder Soldier
Information
Posts: 168
Joined: 21 Apr 2008, 11:30
Location: TASMANIA Australia
Has thanked: 3 times
Been thanked: 21 times

Post by rhandy gaye »

Hi. Great work but, schematic doesn't match pcb, pins 6 and 7 not joined. I haven't read through complete posts but, just noticed it. Cheers.

User avatar
Manfred
Tube Twister
Information
Posts: 1937
Joined: 04 Apr 2009, 23:42
Has thanked: 1671 times
Been thanked: 1344 times

Post by Manfred »

rhandy gaye wrote:Hi. Great work but, schematic doesn't match pcb, pins 6 and 7 not joined. I haven't read through complete posts but, just noticed it. Cheers.
The pins 6 and 7 are indeed not joined, the 3.9kOhms resistor is infixed between.
I could not belive in it firstly and checked the real circuit several times.
The pins 6 and 7 were seperated by a little cut, and both 3.9kOhms resistors are mounted on the soldering side.
Proel_DS-10_Detail.JPG
Proel_DS-10_Detail.JPG (7.27 KiB) Viewed 3804 times
The OP-amp stage keeps unity gain, but the stage output resistance is increased to about 2 kOhms.
Why Proel have done this, I can give no account of it?

User avatar
59Bassman
Information
Posts: 3
Joined: 03 Jun 2011, 08:49
Contact:

Post by 59Bassman »

One of the great things about the PROEL DS10 is not its ability as a Tone Driver (it is a great transparent driver*, not as a tonal pedal per se) but that it also does wonderful things like clean dirty signals or eliminate earth loop hum!

I just got a great deal on a Caline Snake Bite Reverb which is actually very good and adds some great harmonics onto your signal. My Cornford has no reverb and this actually brings it to life. The drive is more defined when a little wetter driving with the two speakers opposed in the room it sounds really HiFi

Downside unit is a bit hissy on or off. It is true bypass supposedly so it may be a modable component( ?) as the actual treated signal is luscious. I didn't try in on 9v Battery yet or swap cables about - that could reduce it. But for £27.74 is worth having as I wasn't looking for a Strymon, just a bit of Spring and Room reverb to give a little definition to the 3 amps I have unverb'd

ANYWAY!! - Two reasons to keep it on my board: 1.) You can get that authentic Shadows reverb sound with it! ie the sound on Apache - And 2.) when you place the reverb *before* the PROEL in the chain and dial down the 3x PROEL knobs to 9 o clock, then 75%+ of that hiss is eliminated and NO loss to the effect/tone! - I bloody love my PROEL pedal!

++

* Add your Proel to other OD and Dist pedals for some remarkable results - not just in tonality but the PROEL has the ability to tame any raucous gain and make it far more user friendly and employable. Extreme example below!


User avatar
EdJ
Information
Posts: 21
Joined: 05 Oct 2010, 11:27
Has thanked: 2 times
Been thanked: 6 times

Post by EdJ »

With the new information about pin 6 and 7 of the opamp not being connected,will the mod from Fuzzlab(quote;From what I see in the tracks pic, the circuit has been modded (maybe in the factory) with the two last 3K9 resistors. They put it in order to increment the gain a little (from gain =1 to gain= 2). But the output resistor 1K5 has not been modded and it remains connected wrongly to the pin 6 . It must be connected to pin 7. So, for a good boost to the level:
1. Change the 3K9 resistor connected to pin 7 for a 47 K.
2. Desolder or cut the jump that is connected between 1k5 and pin 6. (labeled P3 in the pic)
3. Make a jump between 1K5 and pin 7 (with a little cable in the track side)
4. Have fun.) still work?

I was just about to solder when i red the post about opamp's pin 6 and 7.
Thanks in advance!

User avatar
megatoxico
Information
Posts: 1
Joined: 14 Apr 2017, 17:20

Post by megatoxico »

thank you very much guys. I have repaired my pedal. (it hasnt battery compartiment, so opening/closing, the wires were without attach... and I dont knew how to put then...
I have modded it with the resistor and that... and now, Its range it`s superb. from clean to a great distortion, I can`t believe it. thank you so much.

User avatar
Manfred
Tube Twister
Information
Posts: 1937
Joined: 04 Apr 2009, 23:42
Has thanked: 1671 times
Been thanked: 1344 times

Post by Manfred »

There are a couple of things you should know about.
I retraced the the Layout and fixed some errors in the layout and in the schematic.
The Z-Diode type is ZPD 9.1, not ZPD 4.3 and acts as overvoltage protection.
The cathode is connected to the VS+ point, not to the +VR point.
Perhaps Proel made a design-failure, because there is a large voltage drop at the VS+ point due to the LED current.
The voltmeter read 8 Volts when the LED is off and drops down to 6 volts when the LED is on.
Proel_DS10-Schematic.JPG
The highlighted connection has to be omitted.
Proel_DS10-_PCB_fault.jpg
ProelDS-10_PCB_LayoutCorrected.JPG
ProelDS10_corrected_PCB.pdf
(15.09 KiB) Downloaded 97 times
ProelDS10_corrected.zip
(19.71 KiB) Downloaded 66 times

User avatar
Manfred
Tube Twister
Information
Posts: 1937
Joined: 04 Apr 2009, 23:42
Has thanked: 1671 times
Been thanked: 1344 times

Post by Manfred »

I should not work at night.
I forgot to change the Zener designation on the layout.
ProelDS-10_PCB_LayoutCorrected.JPG
ProelDS10_corrected.zip
(19.26 KiB) Downloaded 87 times

User avatar
EdJ
Information
Posts: 21
Joined: 05 Oct 2010, 11:27
Has thanked: 2 times
Been thanked: 6 times

Post by EdJ »

I ended up building a new one,using my old pcb and the layout here to make a new pcb.I only changed the 3k9 resistor to pin 7 for a 47 k.Much more output now and ik really like the sound of it.Tried a few different opamps but didn't hear much difference so put the original back in.Thanks very much for all the help!

User avatar
Manfred
Tube Twister
Information
Posts: 1937
Joined: 04 Apr 2009, 23:42
Has thanked: 1671 times
Been thanked: 1344 times

Post by Manfred »

I hook in a "BASS CONTENT" control to the circuit in the following manner.
Proel_DS10-Mod_Schematic.JPG
The roll-off frequency varies depending upon potentiometer value between ~700Hz and ~6000Hz.
Turning the pot clockwise decreases the roll-off frequency.

Post Reply