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Re: Top Tone - Light Drive

PostPosted: 27 May 2015, 03:13
by soulsonic
friedtransistor wrote:I agree. I would like to see a verified schematic as well.

Totally, man. All throughout this thread, I see people commenting, "oh yeah, totally an SS-2", with no links at all to where they are getting this information? Is there an SS-2 schematic floating around that no one has posted here? Or is this just some rumor that got started on a forum?

Re: Top Tone - Light Drive

PostPosted: 27 May 2015, 04:10
by Intripped
What i know is that there are strong similarities with this pedal
viewtopic.php?f=7&t=20717&hilit=skrydstrup#p210475

...that is supposed to be a Cornish SS2 clone

Re: Top Tone - Light Drive

PostPosted: 27 May 2015, 10:58
by friedtransistor
here's a shortcut to the schematic in that other post (thanks to Intripped for that link):
http://www.freestompboxes.org/download/ ... &mode=view
And the one posted earlier in this thread (thanks to MWichni for postihng that):
freestompboxes.org/download/file.php?id=16643
(Copy and paste to address bar. Dunno why no link appear...)

Very similar schematics, me thinks...

Re: Top Tone - Light Drive

PostPosted: 27 May 2015, 11:42
by MWichni
soulsonic wrote:
friedtransistor wrote:I agree. I would like to see a verified schematic as well.

Totally, man. All throughout this thread, I see people commenting, "oh yeah, totally an SS-2", with no links at all to where they are getting this information? Is there an SS-2 schematic floating around that no one has posted here? Or is this just some rumor that got started on a forum?


It is not verified that it is direct copy of the Cornish ss-2 but it sounds very similar. Unfortunately I don't have tend opportunity to compare this pedals.

Re: Top Tone - Light Drive

PostPosted: 16 Dec 2015, 17:11
by fishfude
So is this the most recent, reliable schem for the cornish: http://www.freestompboxes.org/download/ ... &mode=view

Whats with the Resistor values ending in ''E"? (R10, R11, R24, R22 etc...)?

Cheers,
ff

Re: Top Tone - Light Drive

PostPosted: 16 Dec 2015, 18:58
by MWichni
This is one way to state the resistor value. For example R24 is 100E which means it is 100 ohm value. The same thing concerns other resistor values expressed in "E" manner.
Cheers.

Re: Top Tone - Light Drive  [traced]

PostPosted: 16 Dec 2015, 21:27
by modman
Image

Re: Top Tone - Light Drive

PostPosted: 25 Apr 2016, 23:13
by Ghandi
Anybody else thinks the biasing around the second opamp looks a bit odd?

Re: Top Tone - Light Drive

PostPosted: 24 May 2016, 17:49
by MWichni
I can't post the schematic. For some reason "upload attachment" doesn't work for me. I have the corrected schematic. If anyone want's it feel free to e-mail me or send me a pm with a request.

Best regards,
Mariusz.

Re: Top Tone - Light Drive

PostPosted: 24 May 2016, 23:38
by Blend
Assuming that the father of this pedal is the distortion mxr + and Randy Rhoads to make up for its flaws used immediately after a eq. and that gives his best on a tube amp, the improvement made SS-2 style and Light Drive is obvious. A month ago I did a bit of healthy experimentation likely missing values and found errors on published schemes so far. I used a MC1458 because it actually contains 2 741 quiet, everything works fine but I feel that it is not 99% mainly on hiking tone, perhaps a different second op-amp is the key? However, the volume and gain controls must be adjusted differently when used on clean channel or crunch, crunch you go with full volume and gain at 0 and has a great shot, on the clean channel volume of 11-12 hours and gain from 0 hours 15. Just as in the attached diagram I used in concert last Saturday with marshall jcm 900 and 4x12 cabinet in 1960 and has performed well flares up the amp beautifully.

Re: Top Tone - Light Drive

PostPosted: 26 May 2016, 10:28
by MWichni
Hi guys, I uploaded the schematic to tinypic.

http://oi68.tinypic.com/8yc46x.jpg

Re: Top Tone - Light Drive

PostPosted: 26 May 2016, 13:37
by karul
MWichni wrote:I can't post the schematic. For some reason "upload attachment" doesn't work for me. I have the corrected schematic. If anyone want's it feel free to e-mail me or send me a pm with a request.

Best regards,
Mariusz.


1. Click on [Browse] button
2. Select the image you want to attach
3. Click on [Add the File] button

Re: Top Tone - Light Drive

PostPosted: 26 May 2016, 14:35
by Blend
In this discussion I keep seeing sent schematic of a puzzle made up of fragments from SS-2, Light Drive and Skrydstrup ODR2, in my scheme published yesterday I mistakenly reversed R3 with R5, but it would be really necessary to define what is missing in a Light correct drive, the last schematic published "Cornish SS-2 Light-drive", I see:
- Improper placement of C15 (from Skrydstrup ODR2?)
- R6, 100k is the value in Light drives
- C3 and C12 are Evox PFR having a minimum value on the market 100pf
- R9, 1M should be the impedance of the second phase input
- D2, is missing as in the photo published on page 1 as an element in series resistance or of another diode.

Re: Top Tone - Light Drive

PostPosted: 26 May 2016, 14:57
by MWichni
karul wrote:
MWichni wrote:I can't post the schematic. For some reason "upload attachment" doesn't work for me. I have the corrected schematic. If anyone want's it feel free to e-mail me or send me a pm with a request.

Best regards,
Mariusz.


1. Click on [Browse] button
2. Select the image you want to attach
3. Click on [Add the File] button


I know how it works. When I select the file and then click add the file I get blank site and cannot finish my post in any way...

Blend wrote:In this discussion I keep seeing sent schematic of a puzzle made up of fragments from SS-2, Light Drive and Skrydstrup ODR2, in my scheme published yesterday I mistakenly reversed R3 with R5, but it would be really necessary to define what is missing in a Light correct drive, the last schematic published "Cornish SS-2 Light-drive", I see:
- Improper placement of C15 (from Skrydstrup ODR2?)
- R6, 100k is the value in Light drives
- C3 and C12 are Evox PFR having a minimum value on the market 100pf
- R9, 1M should be the impedance of the second phase input
- D2, is missing as in the photo published on page 1 as an element in series resistance or of another diode.



I will revise that for you and report back during next days. Just too much to do currently.

Re: Top Tone - Light Drive

PostPosted: 10 Nov 2017, 19:01
by The Rotagilla
Hey guys,

I've been messing around with this circuit and have a quick question. The pedal has a bit of a mid hump I don't really care for, is there a part or parts I can mess with to reduce it?

Thanks.