Multicab SIM..my own design cabinet simulator .. it works!! cool!

[J0K3RX]

here's an alternative schematic I made. double-checked:

Nice job! So, you built it then? I really like the sound of this sim!

[MarsSound]

Nice job! So, you built it then? I really like the sound of this sim!

100% Sure I will build this one!! I think it's sound very good and you can even change it's character.
but I want also a switch/knob for changing its frequency-responce to guitar or bass guitar speaker-settings.
and maybe beyond that....

so first I have to figure out what components change the filters fixed frequencies. I really don't know yet.
I am asking for help about that! anby help will do.

[MarsSound]

ok, sorry.....I made some big mistakes. this one has to be correct. I did my best best:

[J0K3RX]

ok, sorry.....I made some big mistakes. this one has to be correct. I did my best best:

ok, now I'ma have to check yer work I was just gonna build it according to your drawing but now...? I can cross ref the original, no biggie.

[MarsSound]

ok, now I'ma have to check yer work I was just gonna build it according to your drawing but now...? I can cross ref the original, no biggie.

there was only one big mistake. I changed it and now it must be ok. I made this schematic to get a better picture of the TL072.
what you can do is take the original and my schematic and check once for mistakes. I couldn't find any.
I will build it today!

[J0K3RX]

I'm just messin with you giving you a hard time I really appreciate you doing this!

[MarsSound]

I'm just messin with you giving you a hard time

I know!   

[tca]

Question:

The sound sample uses the burning crunch, but does this cab sim work with a clean signal? Or it has always some distortion build in?

Thanks.

[MarsSound]

Question:

The sound sample uses the burning crunch, but does this cab sim work with a clean signal? Or it has always some distortion build in?

Thanks.

the cab sim is doing nothing more then EQing: highpass, midbandpass en lowpass filtering
together they form the freq. charateristics of a typical guitar-amp speaker.

I think the idea is to do just that. no gain boost nor a kind of distortion

[deadastronaut]

whatever happened to the 'pseudo stereo' bit?.....sounds good!..
http://www.diystompboxes.com/smfforum/index.php?topic=70445.msg567411#msg567411

edit:

had a go at a layout from the original schemo on page 1..

[MarsSound]

nice work!

I never use this kind of boards. to much solder and messy things at the end.

I am busy to make a version with lines.

[deadastronaut]

nice work!

I never use this kind of boards. to much solder and messy things at the end.

I am busy to make a version with lines.

vero board?...

[MarsSound]

vero board?...

yep. stripboard / veroboard. did'nt know the name.

I don't understand why people uses the board with only holes, like your layout.
you have to solder a mess on the backside to get the conections.

with veroboard you allready have most of the connections...it will get some bigger maybe..but for me no problema!

[J0K3RX]

vero board?...

yep. stripboard / veroboard. did'nt know the name.

I don't understand why people uses the board with only holes, like your layout.
you have to solder a mess on the backside to get the conections.

with veroboard you allready have most of the connections...it will get some bigger maybe..but for me no problema!

Robs layout is mainly used to etch... not perf board. You "could" used perf board with his layout and connect with bus wire but I believe he intended for it to be etched...

Great layout Rob! It's really funny because my layout was almost the same as yours   Weird huh... well, not really but hey.

I don't know what happened to the pseudo stereo? Looks like some stuff was removed throughout this post?

[tca]

the cab sim is doing nothing more then EQing: highpass, midbandpass en lowpass filtering
together they form the freq. charateristics of a typical guitar-amp speaker.

I think the idea is to do just that. no gain boost nor a kind of distortion

Ok, I get the idea. But why not use a EQ for that?

Cheers.

[J0K3RX]

whatever happened to the 'pseudo stereo' bit?.....sounds good!..
http://www.diystompboxes.com/smfforum/index.php?topic=70445.msg567411#msg567411

edit:

had a go at a layout from the original schemo on page 1..

Rob, you didn't happen to build it or bread board it yet by any chance did you?

[MarsSound]

Ok, I get the idea. But why not use a EQ for that?

Cheers.

that's something I also want to know. With a graphic EQ you can 'build' any speaker you want.

maybe it's because it's easier and faster to plug in a speaker simulator. and also more handy and little?

[MarsSound]

Robs layout is mainly used to etch... not perf board. You "could" used perf board with his layout and connect with bus wire but I believe he intended for it to be etched...

I don't know what happened to the pseudo stereo? Looks like some stuff was removed throughout this post?
[/quote]

I'm sure this layout really won't work on a vero board. You need a layout that is based on the tracks of the board and this layout is'nt right for that.
You can use it for eching I think. I wish I could do that. Never did that before.....

I would be nice to have a schematic of the pseudo-stereo! it will be an FX-unit that is really new and original.
you could get pseudo stereo with different EQ on left and right, or with stereo chorus of flanger/phaser. and of course with stereo ambient and verb.
but this thing will do another trick: it makes a kind of copy of the original sound. Sounding the same but on a subtle level it isn't.
would be nice to put other EFX after this stereo-unit.

it works with all-pass filters and phase-shifting but thats all I know......wish I had a schematic to build it!

[MarsSound]

-

[deadastronaut]

@jim:  haven't tried it on bread or build yet, but i like the sound of the original demo, it definately has a wide range of adjustment going by the clip..

now wheres that  (pseudo stereo) mod ...)  slight delay on one channel....that would be well worth building!...

or while i think of it, a ''phase invert'' like on many mixing desks...2 outputs, one phase inverted...to get that dimensional ear thing going on...


@mars:  yes my layouts are pcb,  intended to be etched n drilled.

vero projects end up being to big imo...and all it takes in one tiny burr of copper to make  you debug for hours....

its quicker to build, but i prefer a pcb for a nice fit into a 1590b.

btw have you downloaded DIYLC ?..for designing vero.pcb etc....great prog!

http://code.google.com/p/diy-layout-creator/


edit: a phase invert like this...first clip recorded standard stereo, second clip right channel 'flipped' inverted....gives that stereo dimension....suck and blow effect.

https://dl.dropbox.com/u/7464107/phaseinvertright.mp3

would be an essential+ cool addition imo ,  1 input, 2 outputs..option of inverting both outs...for recording purposes.....

now to find a suitable circuit to add on.

btw :  recorded using mono guitar in to mixer, out to stereo recording...no panning...just inverting the right wave...