Headfirst Modded Origin 20 - José Diode Clipping DIY Guide
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- Опубліковано 28 лип 2024
- Full DIY run down to add a mini 3 way switch for José Zener diode clipping in our 'Headfirst' modded Marshall Origin series amps. Be sure to head to our website for downloads of the schematic, BOM & pics for our Origin mods...along with lots of other amp mods too!
headfirstamplification.com
0:00 Intro
0:48 HF mod, no clipping
4:34 HF mod, José 1
5:10 HF mod, José 2
6:27 Clean tone?
9:48 DIY - PCB walkthrough
27:35 Zeners on the Scope
33:58 Play out
@Headfirst Amplification: Thanks for your hard work and dedication to the craft....
Phenomenal work, @Jason Tong...as usual!!!! This is the tone I've been chasing since I was a kid!!!!
Dude this is awesome. I completely despise how the original origin sounds, but with these mods it sounds killer, I might get one and do this. Great job and thank you.
Another great vid. Bonus points for 'Reminiscing'
He he, I knew you'd dig it brother.
Bought on Friday an used origin 20 for 200£ and I did similar mods to yours. I started with a kind of 800 inspired preamp, but I ended up with something quite similar to you setup after some modifications(I just left a 4.7n as first coupling cap as it sounds a little bit beefier to me and i didn't put the 470pf on the CF. I had instead lowered the CF resistor to 70k circa putting a 220k resistor in // to the 100 original one) I have then added an asymmetric 24V/18V diode clipping (I liked just a little effect, I am not a huge fan of hard clipping, it sounds too much like a pedal otherwise). I have also added another 0.68u cap on the second stage on the top of the 2.7k resistor. Quite impressed with the result!
Important to mention that the PCB are "crap" and the chance of ruining some pad is high. I consider myself "skilled" and also like that I was able to ruin 2 pads (luckily of unused components).
Thank you Jason for all your nice videos!
Nice work. It's great to hear that you tweaked to your own taste!
Great stuff Jason!
Excellent video Jason. Cheers!
Thank you brother.
You had me at Saturday Night. I couldn't Let It Go.. wow
Nice! Gotta love a video that has a little High 'n' Dry!
I've been waiting for someone to say this! Nice one brother.
@@HeadfirstAmps Let It Go was pretty awesome as well.
excellent as always 👏👍🏻🍻
love the LET IT GO intro
Wish there was more demos of this thing in a more modern metal context 😭
Absolutely cool
I would love to see you do a vid on the dsl20h ultra channel it sounds great but it takes some tinkering
Killer tone and playing as usual !!! Nice job !!!!! Hitting the early def Leppard!! The last album I bought from them lol love my maple neck LP !!!🤟🏻🤟🏻🤟🏻
Thanks Jason and for demonstrating what we spoke about previously and the voltages at the different points and taking into account what the resistor and cap were doing in the circuit at 28:00 in until 34:00!! :)
I absolutley did this part of the video because of your idea/suggestion man!
My guy did the same thing with the push pull gain knob. I really gotta ditch my bright cap too it’s awful. Wanna be able to roll back my volume and kick off the OD for cleans. I’m also barely noticing any difference with the Tilt. Time for a refresh of the mod.
Pull the bright cap out
Hello Jason, Your mod sounds sooo good, but I've been thinking of implementing a less invasive mod to make the stock amp better. 1. Tighten up the low end. 2. Clipping diodes for more gain. Any suggestions?
Wow, Great Job. Thank you was amazing. Do you have any information on a hand wired Marshall w the zener diodes?
How to modify a blackstar to have more clarity in the sound?
Whats the difference in sound by using a 1m instead of a 220K in parallel with the zeners? Why a .47 cap and not the usual .22 or .1?
Thank you so much! I'm totally looking forward to doing all these mods. Would I be able to swap the tubes for 6ca7 tubes? I'm totally trying to go for the Eddie thing.
No sweat! Yes, you could put 6CA7's in there no problem. No need to even rebias!
You are a Mad Scientist and I LOVE the Tones you can achieve!!!
I bought an Orgin 50, just bought a Bugera Power Soak and can now drive my master around 7-8. Gain set at 7 gets me AC/DC tones. Boast engaged and a boss super OD gets me in the 800 zone.
Do you think your mode would still improve what I’m able to get with the power soak??
Cheers!!!
Hey man, how’s your Origin 50 treating you? Is it the combo?
I’m looking at a cheap 450$ 50w combo and thinking about the Plexi or JCM800 mod. Is it easy enough to play at home without blowing my ears off and get good tone?
I’m not too fond of clipping diodes to be honest. It’s more like an onmodieuze switch and doesn’t react naturally to rolling back the volume. I’m get closer to my ideal sound with a soldano-like approach . I’m currently implementing this on a 1971 London city plexi clone . Added an extra tube, for a lead and crunch channel setup. I’ve changed some bypass caps to get less fizz and I’m tweaking the crunch channel to get more into plexi /JMP territory. I also put a fat switch on a dual bypass cap on the last stage before the cathode follower which gives it some extra flavors
Do you have any added suggestion for getting a more scooped VH/Brown tone?
Where do we find this on your site to DL? I couldn't find this particular mod. I have the first mod you've done, and am aware of the FX loop mod. But can't find this one. Awesome work! Gonna buy a this head just to get this done. Is that crazy? lol
Not crazy! I'll have the info loaded within the next 24 hours.
Not crazy at all my friend. I had no desire for an Origin until I saw these mods. I jumped at the chance for a new project. After researching Headfirst a little, I bought some of his PCB’s for some ground up builds too. I was kinda done with modding, feeling I had done everything I could. This fine gentleman reinvigorated my urge to mod amps.
@@hogie1259 my pleasure man!
Great sounds. After HF mods, does the two pedal foot switch still work to do anything? I'm guessing that it would still swap the push pull on the bright (which would now control clipping)??? And, if a solid state loop is installed, will the other pedal control it? LOL... or does it turn off a gain stage???
The boost switch will still work, as a gain boost (but reversed). Loop switch won’t work, it could be repurposed for something but that’s outside the scope of this mod!
Whats the difference between the asym and zener modes? Did jose ever do the asym mod? To my ears its alot more saturation and a tad darker alot like a modded jcm800
Do you find these 20 watt amps have a killer tone but sound “small”?
Just to clarify here, are you going guitar into fractal - Fractal output 2 to Amp - Amp to load box - then load box to fractal return? im going through a few issues with this method and am interested.
Also, Can this be applied to the non modded amp, Maybe i can do this in advance before going the whole hog
From experience I performed both the JEL and Jose mods on my JCM 800 in addition to the Lee Jackson 6-position mid shift and my rig doesn't sound any where close to this. There has got to be some signal processing magic going on behind the scenes here.
No secrets here bro, just a Suhr reactive load and IR's.
Hi. Let me congrat you on your fine work. I discovered your channel just yesterday and need sometime to digest all info in here. I wonder if I can apply this zener clipping mod to a Fender AB763 Bandmaster amp? And how? Thanks
Hi, thank you. I'm afraid the diode mod will not work in that kind of amp, you really need a cathode follower driven tone stack to follow what I did in this video.
@@HeadfirstAmps Thanks for your kind reply. Would you suggest I put a solid state FET buffer after 1st gain stage before the tone stack to mimic cathode driven one. I saw some schematics with such arrangement as a cheap alternative to using tube drivers. Thanks again....
Jesus Jason the HF mod sounds bloody awesome as it is ... the Jose stuff makes this maybe the ultimate Marshall?
Hard to beat the José stuff!
All said and done with these mods….is this as good or better than the real thing? Is it as punchy and articulate as the real thing too? It’s not just the tone it’s that crazy response the JCM has that’s so tight. Wondering if this has that same feel!
Any chance of some mods for the DSL 20? Those always sound stiff and dry to my ears.
Stay tuned, hopefully one comes in for a touch up.
Jason...hi..My buddy gave me an Origin 50 to mod and one of your fx loop to mount but a few parts are missing from the board.
Do you have a schematic for the loop? thanx.
Email me please. The origin loops have parts missing deliberately. Headfirst.amplification
@gmail.com
What about trying that zener mod on a standard 1959 with a post phase inverter master volume....off the cathode follower the same way....would that work or do you have to have a master volume?
Hi Sean, with a PPIMV I don't think the zeners are necessary. There are really there to simulate the compression that you get from a plexi on 10.
Where xan i get this mod scematic ? I have to Marshalls 50 origin and would like to mod them this way....Live in Sweden so its a bit hard to send the amps for modding elsewhere...I have a real good guy in stockholm who can make the mods for me..thanks for a real good video.
I've done 3 videos on it, but have not gone to the extent of tracing out a full scheme. Everything I have shared is available in those videos and is up on the website. Plus there is lots of help available in my DIY Builders Group on FB. Lots of folks there have done this mod to their O50's
@@HeadfirstAmps Ok..Thanks.. i will check it out with my amp tec .👍
So I wonder how much i’d be into one total: amp + HF mod + labor to install it. Prolly end up being cheaper to get an already hotrodded amp
I bought an Origin 50 for 260€ + asked a friend who is a tech and Origin lover to do the Headfirst mod and Jose Clipping mod and he did it for 200€ (parts and labour), so 460€ total. Still a lot cheaper than a real JCM800 with much more options in my opinion. :) I love it!
i have the origin 50h and the gain sounds spitty i guess you would call it that. when on the neck pickup or with more bass with the gain turned up if you play a chord and let it ring out thats when it gets spitty or sounds like something is touching the speaker as the sound starts dying off. the cheap dark matter pedal i use to have did exactly the same thing. my bb preamp at pedal does not do this and sounds great. did your amp do this when it was stock?
I don't think it did, but stock they sound pretty lame imho
@@HeadfirstAmps its hard to notice sometimes. if you never let a chord ring out then start dying off it wont do it and it sounds decent but if you let it ring out it does it. i thought it was the speakers so i used another cab and it did the same thing. like i said before the tc electronics dark matter pedal did this too. must be a bad design. i guess i will only use pedals.
Serious question - is this for like hard rock style, or something? I play more of 70’s rock and I don’t have any issues getting distortion or speaker breakup for that
80’s metal and forward
Suntan cap...Jaycar special 🤣 I grabbed the same one today. .47 ok?
Yep, just something I had laying around!
@@HeadfirstAmps I plan to use the same then.
Is the 220k left in parallel with the diodes with this switching?
The 220k to ground is always in the circuit, only the zeners switch in and out
@@HeadfirstAmps stops popping I guess?
It's replacing the 'José master' which is normally where the master volume pot is pre tone stack
@@HeadfirstAmps gotcha, was just confused by the diagram
I made the mod is awesome! but how did you set the origin in this video?
Gain probably at 7/10, EQ around 5, master up at around 4.
@@HeadfirstAmps thanks!
So these tones absolutely can’t be duplicated with a pedal in front? Carvin has these 4 clipping diode arrangements in a bunch of their amps - and everyone seems to hate it?!? Why is it guys hate it when it’s installed, and when it’s not - guys want to install it?
You can't do this with a pedal, it's all about sequencing of the gain structure. Carvin's implementation is very different, much earlier in the pre-aamp, and sounds very buzzy by comparison.
Will this apply to the plexi mod being set up the same way?
Yes, would work in the plexi mod too
Much appreciated Jason. Can’t wait to get some some sick tones going
Can you demonstrate the amazing Jose Arredondo Marshall amp gain mods without invoking The Little River Band? Answer: No.
Oh c’mon…LRB!
I want to put this switch on my 68 plexi clone
That’s way too much gain/distortion. I play thru an origin 50c and a 20c, they’re fine just the way they are STOCK!
Hmm, I don’t agree. But that’s cool if you use pedals.
The secret… he is playing a red bean pod 😆