Author Topic: Any cab simulator circuit worth building?  (Read 44803 times)

Paul Marossy

Re: Any cab simulator circuit worth building?
« Reply #60 on: February 26, 2018, 10:50:24 AM »
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

Re: Any cab simulator circuit worth building?
« Reply #61 on: February 26, 2018, 09:45:15 PM »
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

Re: Any cab simulator circuit worth building?
« Reply #62 on: February 27, 2018, 03:25:01 AM »
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.
« Last Edit: February 27, 2018, 03:37:33 AM by temol »

deadastronaut

Re: Any cab simulator circuit worth building?
« Reply #63 on: February 27, 2018, 06:43:23 AM »
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
« Last Edit: February 27, 2018, 06:46:23 AM by deadastronaut »
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caspercody

Re: Any cab simulator circuit worth building?
« Reply #64 on: February 27, 2018, 10:01:52 AM »
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

Re: Any cab simulator circuit worth building?
« Reply #65 on: February 27, 2018, 11:40:45 AM »
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?.
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caspercody

Re: Any cab simulator circuit worth building?
« Reply #66 on: February 27, 2018, 12:25:42 PM »
Yes, running at 9 volts.


deadastronaut

Re: Any cab simulator circuit worth building?
« Reply #67 on: February 27, 2018, 12:56:58 PM »
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.. :icon_rolleyes: 8)

« Last Edit: February 27, 2018, 01:21:43 PM by deadastronaut »
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J0K3RX

Re: Any cab simulator circuit worth building?
« Reply #68 on: February 28, 2018, 09:31:57 AM »
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.. :icon_confused:
Doesn't matter what you did to get it... If it sounds good, then it is good!

caspercody

Re: Any cab simulator circuit worth building?
« Reply #69 on: February 28, 2018, 10:10:55 AM »
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

Re: Any cab simulator circuit worth building?
« Reply #70 on: February 28, 2018, 06:29:27 PM »
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

Re: Any cab simulator circuit worth building?
« Reply #71 on: February 28, 2018, 10:16:15 PM »
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

Re: Any cab simulator circuit worth building?
« Reply #72 on: March 01, 2018, 04:20:17 AM »
« Last Edit: March 01, 2018, 04:45:00 AM by deadastronaut »
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anotherjim

Re: Any cab simulator circuit worth building?
« Reply #73 on: March 01, 2018, 05:35:06 AM »
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.
"So lets stay within the limit of sureness: lets consider the fuses you have available and lets see what you have to do to light them up..." Farfisa Partner 15 drum machine manual.

caspercody

Re: Any cab simulator circuit worth building?
« Reply #74 on: March 01, 2018, 12:06:12 PM »
Rob,

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

anotherjim,

Thanks, I will try that tonight.

Thanks
Rob

deadastronaut

Re: Any cab simulator circuit worth building?
« Reply #75 on: March 01, 2018, 12:11:46 PM »
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..

http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

vigilante397

Re: Any cab simulator circuit worth building?
« Reply #76 on: March 01, 2018, 02:02:41 PM »
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 :P 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.
"I'm not sure what "serious design flaws" you see. Does it explode or poison your dog?" - PRR

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caspercody

Re: Any cab simulator circuit worth building?
« Reply #77 on: March 01, 2018, 05:30:05 PM »
Vigilante397

Check out reply 54 on this tread

caspercody

Re: Any cab simulator circuit worth building?
« Reply #78 on: March 01, 2018, 05:31:30 PM »
Sorry, reply 52

vigilante397

Re: Any cab simulator circuit worth building?
« Reply #79 on: March 01, 2018, 05:35:01 PM »
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.
"I'm not sure what "serious design flaws" you see. Does it explode or poison your dog?" - PRR

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http://www.sushiboxfx.com