Tight Metal - Reverse Engineer?

[J0K3RX]

Well, the schematic is verified anyway... good work jymaze and bajaman!!  

I don't know about my layout but I believe the schematic is 100% correct!



Bread boarded TM buy ggedamed from "the other forum"

Like I posted earlier, here it is bread boarded from the schematic so, it is working! It has also been verified in Spice in another forum... But, like I also said, I don't know about the layout as I have not built it yet..??

[J0K3RX]

Ok, this is Very Verified, now! Probably my favorite high gain pedal!

I didn't go through all of the settings in my samples but it can do a lot!!! Very quiet pedal!!

Sh!tty samples. Used on-board cab sim - Chain was\ Guitar-> pedal with on-board cab sim-> PC-> Reaper DAW with some slight vst delay... No post EQ
https://dl.dropboxusercontent.com/u/11178619/TM1/TM2.mp3
https://dl.dropboxusercontent.com/u/11178619/TM1/TM3.mp3







Cab Simulator


TM Schematic


New Layout


New layout Transfer - May need scaling inside acrobat?
https://dl.dropboxusercontent.com/u/11178619/TM1/TM%20Transfer%203.pdf

Enclosure etch

[J0K3RX]

I'm not using the FX loops... You can jumper them if you don't plan to install them.

[Kipper4]

Great work Jim. I wish I had your knowledge and know how.  Well done Sir

[J0K3RX]

Great work Jim. I wish I had your knowledge and know how.  Well done Sir

Thanks Rich! I can't take credit for this, it was really a group effort! Thanks to jymaze, bajaman and rcustoms in the "other forum" for all their help with this! and Lart for the bad@ss cab simulator!

If any body want's to know the details on the boost switch and whatever else just ask...

[haveyouseenhim]

I know exactly what I'm building next.

[deadastronaut]

f........g nice.

the lead sound comes through nicely too,without being fizzy/gatey, very cool.......cool licks btw man. 

excellent work guys....

[Elijah-Baley]

Old topic, but you know, no need open a new.

One of my far future project is a Wampler Triple Wreck pedal, I can build it on veroboard layout.
A good alternative for metal distortion is the Tight Metal but I can't print the PCB.
I found this link where I can use a PTH - Pass-Through Hole, (sorry I can't the right name). http://effectslayouts.blogspot.it/2015/08/amptweaker-tight-metal.html.
This layout seems UNVERIFIED.
Has somebody built it, or we can understand if the board is reliable?

Thank you!

[nickbungus]

I've never heard/seen this.  My next build

[strungout]

Nice Job guys!

In the third video (with the circuit on the breadboard) you can hear some squeal when he tries to turn the (gain?) knob. Have you had any problems with oscillation?

[J0K3RX]

This subject sank into the abyss here for some reason (lack of interest) or whatever...  So, I didn't post any further updates here. The video was done early on in the process and has since been perfected and 100% verified by myself and scores of others.. I also got my hands on the Tight Rock and that has now been fully verified which wasn't hard since it's nearly identical to the TM with the exception of the SideTrak feature and a few part value changes. 

The schematic in this thread has a few minor mistakes on it that I later corrected one of which is R27 should be 4k7 instead of 1k5 which also appears to be incorrect on the effectslayouts blogspot as well. I have built this many times with many different add-ons and modifications and I have not had a single one of them have any problems with oscillation. As a matter of fact they all worked flawlessly and actually sound identical to the original and with some slight modifications they sound even better than the original! I can tell you straight away that you do not want to build one without the pots mounted on-board because this thing is a high gain monster! Also I would highly recommend NOT trying to put this thing on vero unless you enjoy a noisy, humming, buzzing, squealing, cross talking birds nest of insanity! FYI - It doesn't play nicely on a breadboard either!

All of the ones I build now are double sided fab from OSH or places like that. I use metal film resistors most of the time and your choice of caps really makes a difference in this circuit.. I used to be a skeptic but this pedal made me a believer!

Anyway, you can make your own boards or you can swing on over to Grind Customs and get a really nicely designed board And, the build doc has the correct schematic if you are just wanting to check that out..
http://www.grindcustomsfx.com/product/gcfx-aeons/

Oh, and just FYI... The Triple Wreck does not even come close to reaching the levels of brutality that this thing dishes out!!! Not even close...

[Elijah-Baley]

Thanks, J0K3RX.

Eventually, I don't use a stripboard, but this kind of board, tinning the tracks with the solder.:


I never built on verobord these kind of high gain distortion pedals, just a Big Muff, A BSIAB II and a Fuzz Factory.

I don't know Grind Customs, the shipping cost for Italy is "Flat Rate", and it means... ?

Oh, and just FYI... The Triple Wreck does not even come close to reaching the levels of brutality that this thing dishes out!!! Not even close...

Really?

[bluebunny]

I don't know Grind Customs, the shipping cost for Italy is "Flat Rate", and it means... ?

"Zero"?  I just happened to pass by there and picked up a couple of PCBs a few minutes ago.  Zero shipping to UK, so I guess Italy would be the same.

[Elijah-Baley]

Zero costs? Sounds good! I hope no fee, duty or taxes added at the delivery. The PCB aeons cost just 10 $.
Thank you, blubunny, let us know if the delivery will be alright and quick.

[LiLFX]

Your ground trace forms a ground loop around the perimeter of the board.  It will hum like a SOB like that.  You need to break it somewhere so the current only has _one_ path it can flow.

You sure about that? I work on boards all day with solid copper pours. The only problem I see with the copper pour are areas of the pour not connected to ground. Those areas can create little patch antennas that are capacitively coupled to the surrounding pads and traces.

[J0K3RX]

Your ground trace forms a ground loop around the perimeter of the board.  It will hum like a SOB like that.  You need to break it somewhere so the current only has _one_ path it can flow.

You sure about that? I work on boards all day with solid copper pours. The only problem I see with the copper pour are areas of the pour not connected to ground. Those areas can create little patch antennas that are capacitively coupled to the surrounding pads and traces.

You're just a little late to the party, that was a reply from 3 years ago...    No use debating that layout, ground loops, ground pour, unconnected islands etc.. It had a lot of issues and the ground pour was not one of them. I have removed it.   

[LiLFX]

Woah...I didn't even see the age of the post. haha

[Elijah-Baley]

Woah...I didn't even see the age of the post. haha

Old topic, but you know, no need open a new.

[...]

My bad, sorry.

[deadastronaut]

cool, glad to see this alive again....i did bread this, and was brutal,

i ended up ripping the gate out, though it was a cool feature  there was no real adjustment,

i also ripped out the tight pot section too

and ended up with pretty much a  bare bones schemo in the end....

just vol, tone gain...

[Elijah-Baley]

If to buying from Grind Custom there's no added cost to the 10 $ to the board I could buy it with my next orders (in this winter?).

I would just to know one thing, can I use pot lugs with short wires instead those PCB mount pots? I drill my box by hand, I could to be not so precise, I prefer BB enclosures when I have 6 knobs and maybe to have more space inside the enclosure.