valvecaster

valvecaster

12 421 views | 20 Mar. 2011

This is my homemade tube overdrive pedal i call the tonybrowntown valvedrive. Its loosely based off of the valvecaster. Playing an Ibanez gax70 with gfs pickups into a bugera 1990 120 all tube head(jcm900 copy) into a 2 by 10 cab I build with a celestion gl1035 and an eminance. Please forgive camra sound allthough it does do a decient job it muds up the sound a little, but you get the idea at least. In the video I said the pedal cost 120 or so but the prices I gave dont add up to that, I was figuring in all the extra stuff I ordered, doubles on parts and such.

Fabio Cavaliere

@christianguitarest I totally *adore* tubescreamers. In combination with my Laney CUB10 my Ts-7 pushes me into whichever blues/hardrock territory...I am still looking for a proper distortion to fill some parts where my lead work requires...saturation. But I will find it :)

Home Guitar Mods

I am using a 1a 12v power supply, which is a must. Even at 9v you cannot run this on a power daisy chain, otherwise at high gain it compresses really badly, it gives a volume drop when strummed hard. I'll try a JJ next, I've herd really good things about those.

Home Guitar Mods

Check out the Elector Harmonics Metal Muff. Had one for a few years and really liked it. Its been a while sense Ive played with one but I really liked the top boost on it for solos. Maybe not what your looking for but if you can go play through one I think you really should.

Christian Opalinski

Nigel Tufnel would be proud.

joel jay

what is your power supply? 12v ?a, or ma? is it 1 a?

cleiton peres

Hello , can pass the electric scheme (diagram) . By the way, excellent tone , congratulations

Fabio Cavaliere

@PlaidBicycle Charge pumps work pretty well for anodics, since the current drawn is very small!

Home Guitar Mods

@jjmusicmanjay I didnt do anything different. All I did was add the extra switches and buttons, otherwise the original design (tube, drive nob, volume, tone, true-bypass switch) are exactally as I found online. The only thing different I do is run the pedal at 12v rather than 9v. But the sound difference is subtle, just more fuzz at 9v. If you use a 12au7 use 9v, but you can play around with it. I don't have a diagram sorry.

Home Guitar Mods

I just saw this comment, so sorry for the lare response. Its a 1 amp 3-12v selectable enercell powersupply I run at 12 volts that I got at radioshack

Home Guitar Mods

@DMSProduktions the valve is running at 12 volts. The only way to step up from 12v to 300 is to have a transformer in the pedal, which the blackstar does. The problem with this is they get hot, and your stepping on 300 volts. One short in the pedal and the next time you step on the pedal it might ground through your legs to teh ground, not a fun situation.

Home Guitar Mods

@christianguitarest So for me I was never going to mess with voltages like that. Besides, at 12 volts the tube IS runing at max heater voltage, you could to to 18 but 12.3 is ideal, so Ive read.

hendershot2009

Just wanted to say that I think this is the best demo of the valvecaster on youtube - all of the other videos I have listened to sound like crap. Anyways, thanks for the good video! I am currently building a valvecaster, but in a "unit" form like a Fender '63 Reverb unit; I just didnt like the idea of a tube having the chance of me accidentally stepping on it, and in the larger unit I have more room to modify.

Mongus Kooklord

This sounds a whole lot better than every other valvecaster on youtube!!  Thoughtful design and 12V!!

Robert Nitschke

Why did BOSS effects swap the power supply connections??

Fabio Cavaliere

@christianguitarest The voltage drop when driven hard is known as "blockade distortion". You need to put a resistance (10-100 KOhm in range) in series with the grid of the second stage. The Valvecaster is a really bad project tube-wise, creating the distortion by asymmetrically clipping on the knee of the tube characteristics. I have tried at 24V with a vast improvement over 12. Still, an overdriven VC just sounds farty to say the least :)

EvanWLemire

I know this video is old but what a great sounding pedal! Nice work.

Home Guitar Mods

@christianguitarest Also make sure you use a shielded (plastic) power plug. If you dont the positive side of your wall plug will ground to the case of your pedal and your pedal wont work. I used a metal one and it took me forever to figure it out. I simply made the power plug reverse polarity (positive tip negative barrel) but youll need a power supply that does that, I got mine from radio shack.You will want a good power supply or else your pedal will hum and make noises you wont be able to fix

dachhh

I like the idea of having extra stomp switches to engage a few different tones, pretty neat :)

xs9887

@Marshallstack3203 or would he. all i see is 3 dots. it doesn' t go to 11 does it!!!

Home Guitar Mods

@pyrotas I totally agree. This was a fun project but I have sense cannibalized it for different things. I used it as a clean boost for a while just for fun but in a live setting my two tube screamers were the way to go. I was a fun project to build a pedal exactly how I wanted it and the nice part is the 11 non and volume boost mods I added can be added to any stomp-box so my mxr classic distortion looks like this now, minus the tube.

Michael Gorman

Are you still making this pedal, or was it a 'one off'?-very practical, sweet tones

Home Guitar Mods

@DMSProduktions As I described in the beginning of the video, The pedal is running at 12volts. I also have the Behringer vt911, but the sound sucks due to the resisters and such they put in it. The vt999 however has better values than the 911, so Im glad you got that one. As far as running the ts, I just wanted to show how well the pedal sounds being pushed, much like an amp. Thanks for the comment, It was a fun build.

Home Guitar Mods

@hendershot2009 Thanks! I would agree with putting it in a larger unit. I didn't add the u bolts to protect my tube until I tipped the pedal over and ruined all the prongs on a tube. If your doing just the standart 9v or 12v setup, the tube does not get very hot, really it just gets a little warm so I would say there is no need to vent you box (unless you want to to see the tube). Also the tube doesn't light up very bright so the addition of an led could be an option.

guitarhick

lets see the schematic. i love it. question is there a way to get more (mu) gain with less headroom so no tube screamer is required usingonly 12v.

joel jay

do you have a diagram on how you wired it for the 12ax7, i was told it needs to be wired different to use a 12ax7