Any cab simulator circuit worth building?

[Paul Marossy]

Personally I like the ROG Condor and this old Stoned Tone Marshall cab simulator that I built a long time ago and tweaked a little bit (I use this one mostly).

[caspercody]

Does  anyone have the schematic for the Lionsound LS14 cab sim? I did find the schematic for the Lionsound 14.0 Dark Angel, but not sure where the cab sim starts. Thinking it is pin 5 of A1.2

Does anyone have any vero layouts for this one, or any of the ones from TrueVal, or Lart?

Thanks
Rob

[temol]

caspercody - check this thread, reply #370 (Ответ #370). There is a LS14 cabsim schematic, pcb, silkscreen. There is also kicad project available.
Vero for Lart's simple cabsim
I have TrueVAL 4x12 cabsim layout bookmarked somewhere but I cannot find it now..

edit/

There it is...  schematic - reply#31, pcb in sprint layout format - reply #42

T.

[deadastronaut]

i have this on breadboard at the mo....pretty cool.  best one ive tried so far...

i added a recovery stage....still under unity though...running on 9v..

and also swapped the bottom 10 for a 50k pot...to adjust brightness.


http://www.diystompboxes.com/pedals/schems/msim.jpg

[caspercody]

Thanks Temol!!!!

I had to stop making PCB's, kids around and to many chances of a accident, so I am now doing vero builds. If you happen to find any vero layouts for LionSound or any TrueVal please let me know.

Deadastronaut,

I also built that Marshall cab sim, but my problem is it is too loud. Way above unity. I added a 100K volume but did not help mush in reducing the level. I need to find out how to bring the level down?

I might look at that 50K pot idea.

[deadastronaut]

mine deffo isnt loud....i had to add a recovery stage after it...

i also added a switch to add caps in parallel with the 10n in the 3rd opamp...

are you running on 9v?.

[caspercody]

Yes, running at 9 volts.

[deadastronaut]

drop R2 down to reduce vol....try 4.7k  (i have, seems ok)

removed recovery stage now.....must have messed up before as it seems fine now..

[J0K3RX]

I think this is a little better representation of the Marshall sim Rob posted.
http://www.generalguitargadgets.com/wp-content/uploads/marshall_speaker_sim_sc.gif

Believe it or not, I don't think I have ever tried this one..

[caspercody]

That is the same one that I built. It is on the Tonepad site, and SabroTone site.

I have a very loud output, but looking at comments on SabroTone, and on here:

http://www.diystompboxes.com/smfforum/index.php?topic=104498.msg937094#msg937094

I am going to try to replace R1 and R2.

On my KMG V30 cab, I am going to try to replace the first buffer into a non-inverting amp, to give it more gain. Just need to figure out how much gain?

[Willypp]

I've built, and boxed that marshall one from Sabrotone.  It really nerfed my distortion for some reason, so now I'm using Lart's Simplecabsim.  Quite pleased with that one.

[caspercody]

I changed out R1 and R2 on the Marshall sim cab, and now I am able to lower the overall volume. This sim is really great!!!

Might try the brightness pot DA suggests.

So far I have built the Marshall sim cab, Lart Simplecab, and KMG V30. I love the Marshall the best so far.

I just need to get the volume up on the KMG V30, I just tried to convert the input IC to a non-inverting amp, but the volume was actually lower.

I had a gain of 10,001. I used 1M at R2 and a 100 ohm at R1. Maybe I am not doing it correctly. I had sound just really low in volume.

[deadastronaut]

scratch that....after reading samhays comments...


http://www.diystompboxes.com/smfforum/index.php?topic=104498.msg937094#msg937094

[anotherjim]

KMG V30, that IC1b input is a unity gain non-inverting buffer. To give it some gain, leave R1 as it is and replace the feedback wire from pin 6 to 7 by a network like  IC1c has with R6, R7, C4.

[caspercody]

Rob,

Are you referring to the input cap value by samhays (reply #14)?

anotherjim,

Thanks, I will try that tonight.

Thanks
Rob

[deadastronaut]

yes,  input cap 4.7n...input resistor 220k, and feedback resistor 220k....

and 4.7n cap out....

i have 2 on/off/on toggles for putting caps in parallel with the existing caps on opamp 3/4...

just gives more 'tonal' options as it can be a tad bright..

[vigilante397]

I have used the Marshall cabsim a la Tonepad, GGG, etc. and have been pleased with the results. Definitely way loud, but I usually just throw a volume control after it.

I'm really interested now to check out the Hotline 2 as I have now heard too many praising reviews to ignore Unfortunately Russian websites tend to be blocked on our work network (surprise ) so I won't be able to look at it until I get home.

[caspercody]

Vigilante397

Check out reply 54 on this tread

[caspercody]

Sorry, reply 52

[vigilante397]

Ah, excellent, thanks Rob! I must have missed that when my slow internet connection wasn't loading the pictures and I was skimming through the thread.