Nice build, I'm not a fan though of running the tubes off a 9v source, I believe its a starved plate design (I will stand corrected if its not) I think you really need more voltage to get the a_7's to give up a good distortion sound. But thats an opinion, its all what you like. Nice build though!
Nice work on the build, but that's an awful overdrive sound. Unless you're going for the whole Beatles "guitar direct to mixing board" tone. Then it's spot on.
loop up "Matsumin's Valve Caster". Although Matsumin uses a 12au7 (lower gain) i'm sure that with a little tweeking of his design, the 12ax7 (higher gain) could be used.
Looks like a 'starved' voltage design, sounds like a 'starved' voltage design, especially if running on nine volts DC. Needs good high voltage step up supply to get that little bottle cooking.
I really like the concept if for no other reason than this: Preamps are SO dependent upon the tubes in them. Now here is one where the tube can be changed in a few seconds.. This is very convenient. I like this alot!!!!
I bought a similar kit thru ebay a year ago or so. Maybe from you, because the blue jacks look the same. What type wall wart should be used for this kit?
Um... a kit, with an enclosure and a custom PCB with tube socket. For less than $45? Please, that's a steal. Unless you're using used parts and a makeshift enclosure, building a pedal for under $10 is simply a fantasy.
your crazy bro, pedal chassis alone will cost you $45. Thats probably the best deal i've heard of. PCB, Parts, Chassis, Tube. Nice deal, not at all a rip off. Switches will run $7-10 alone.
Actually, the heaters in most tubes are run at 5-6.3vAC (sometimes DC). It's the plate that's run at a high DC voltage (usually upwards of 300). As long as the plate is more positive than the cathode, which is usually grounded or connected to a resistor to ground (i.e., the cathode sits at 0 volts or just above that) electrons will travel from the cathode to the plate. Unfortunately, running at 9v doesn't leave you a lot of headroom for the input signal at the grid.
yes it is. i has a 6.3 volt heater. it is also posible to run almos any tube whith even a 5 volt plate voltage, just dont expect much out of it. i got a 6av5ga tube working on 12 volts, and its rated to a 400 volt plate, but id only puts out about 10 miliwatts( just a little more than the actual gutar puts out)
What kind of power supply do you use. I mean, I don't see any transformers in the pictures, and I can't imagine how a 9V battery can power a tube...
DrLubitel 1 week ago in playlist Uploaded videos
this is cool, but can you make an in depth how to video? and whats it sound like
gabe13311 3 weeks ago
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Nice build, I'm not a fan though of running the tubes off a 9v source, I believe its a starved plate design (I will stand corrected if its not) I think you really need more voltage to get the a_7's to give up a good distortion sound. But thats an opinion, its all what you like. Nice build though!
DynaflowDonnie 1 month ago
Comment removed
DynaflowDonnie 1 month ago
This sounds bad, you need a cab simulator for this if youre running the preamp straight to the computer!
GuitarRazze 2 months ago
Nice work on the build, but that's an awful overdrive sound. Unless you're going for the whole Beatles "guitar direct to mixing board" tone. Then it's spot on.
karlhouseknecht 2 months ago
@karlhouseknecht crank it and go for the "Revolution" tone?
glueforall 1 week ago
Do you have the diagram?
96lolstar 3 months ago
@96lolstar
loop up "Matsumin's Valve Caster". Although Matsumin uses a 12au7 (lower gain) i'm sure that with a little tweeking of his design, the 12ax7 (higher gain) could be used.
rodwynnejones 2 months ago
what are your plans for this
rainbow6vegaslover 3 months ago
0:41 you can clearly see it's a PUBE overdrive!
ismokewead420 3 months ago 9
do you have schematics??
KovaXofficial 4 months ago
too much gain...sounds harsh
41224jason 4 months ago
Looks like a 'starved' voltage design, sounds like a 'starved' voltage design, especially if running on nine volts DC. Needs good high voltage step up supply to get that little bottle cooking.
GoldtopSam 5 months ago
I really like the concept if for no other reason than this: Preamps are SO dependent upon the tubes in them. Now here is one where the tube can be changed in a few seconds.. This is very convenient. I like this alot!!!!
sustayne 5 months ago
@sustayne Thanks!
emarkhk 5 months ago
Uh, an exposed tube on a pedal box? That's not going to last long!
TeddtheTiger 5 months ago
@TeddtheTiger *power surge*tube explodes* FUCK MY EYEEEEEEE
EmperorofCartoons 3 months ago
@EmperorofCartoons I was thinking more like someone mistaking the tube for the pedal itself, but that works too ;)
TeddtheTiger 3 months ago
very sweet tone. god job!
brett2525 6 months ago in playlist DIY Amps & Projects 2
@brett2525 Thanks!
emarkhk 6 months ago
@brett2525 GOD HAS A JOB HAHA
kissarmy110936 1 month ago
cool! song?
ubuntupokemoninc 6 months ago
@ubuntupokemoninc
The Beatles - Let it be
DaGagamel 5 months ago
Good job! little flat though... :)
MattLFL 6 months ago
I bought a similar kit thru ebay a year ago or so. Maybe from you, because the blue jacks look the same. What type wall wart should be used for this kit?
rabupp 6 months ago
Nice stuff!
Sounds quite nice.
thecactustube 7 months ago
"Yeah I'm rockin, time for some kick ass overdrive!" *Crunch* "Shit."
PirateofFordLake 7 months ago
Where'd you learn how to do this?
Covers4Christ 10 months ago
How did you record this? It sounds decent, but a little flat-- I'm assuming you did it directly to a DI box? Perhaps a SS amp?
I can hear the potential of the pedal, something just sounds dead in it.
gibbyhibbies 10 months ago
@gibbyhibbies
Thanks for your opinion, I will try to record a new video
emarkhk 10 months ago
I would like to have one of these. Where does one get it?
DivineFellowship 11 months ago
Beautiful tone indeed!
DivineFellowship 11 months ago
do you sell the kit without the box?
wijayaj 11 months ago
@wijayaj
US$20 without the 12AX7 Tube
US$30 with the 12AX7 Tube
pay by paypal , postage - appr. $15 depand on country.
emarkhk@yahoo,com.hk
emarkhk 11 months ago
@emarkhk
do you sell it via ebay?
wijayaj 11 months ago
do you sell the kit without the box?
wijayaj 11 months ago
very nice smooth overdrive
Jule553648 1 year ago
how do you overdive a valve without stripping the anode??? does the grid go positive to the cathode?
tim0090 1 year ago
selling the kit for 45 bucks when the materials w/o tube is less than 10?... RIPPPPPPPPPPPPPPP look up Valvecaster schematics on google.
hpcompaqd530FFS 1 year ago
@hpcompaqd530FFS
Um... a kit, with an enclosure and a custom PCB with tube socket. For less than $45? Please, that's a steal. Unless you're using used parts and a makeshift enclosure, building a pedal for under $10 is simply a fantasy.
ldopa123 1 year ago
@hpcompaqd530FFS
your crazy bro, pedal chassis alone will cost you $45. Thats probably the best deal i've heard of. PCB, Parts, Chassis, Tube. Nice deal, not at all a rip off. Switches will run $7-10 alone.
impsick 1 year ago
where you got the box from ? I wanna build a pedal and i have no idea where from can i buy pedal box .
yuraaa1990 1 year ago
why didn't you used a microphoned guitar speaker for recording?
It seams to be recorded directly.
bye
Tommy15185 1 year ago
try a pedal with a 12k5 tube. its a low voltage tube that sounds absolutly great.
bob505470 2 years ago
Do you have schematic of 12K5 tube effect? Thanks!
emarkhk 2 years ago
and the tubes are only $4-$6 each
bob505470 2 years ago
9v ain't enough to heat a tube
guitarcapo 2 years ago
Actually, the heaters in most tubes are run at 5-6.3vAC (sometimes DC). It's the plate that's run at a high DC voltage (usually upwards of 300). As long as the plate is more positive than the cathode, which is usually grounded or connected to a resistor to ground (i.e., the cathode sits at 0 volts or just above that) electrons will travel from the cathode to the plate. Unfortunately, running at 9v doesn't leave you a lot of headroom for the input signal at the grid.
mrcakes14 2 years ago
Allow me to re-phrase. It sounds like crap.
guitarcapo 2 years ago
it doesn't sound to bad...but the best way to replicate a tube overdrive is to go and buy a tube amp.
lespaulreborn 2 years ago
yes it is. i has a 6.3 volt heater. it is also posible to run almos any tube whith even a 5 volt plate voltage, just dont expect much out of it. i got a 6av5ga tube working on 12 volts, and its rated to a 400 volt plate, but id only puts out about 10 miliwatts( just a little more than the actual gutar puts out)
bob505470 2 years ago
Kit is US$45 with Box. Please email me.
emarkhk 2 years ago
I thought I read Pube Overdrive. Sounded a little teenaged. =)
Joni0001984 2 years ago 4
haha
theultimaterockr 2 years ago
Hello, I verry intersting for this homemade overdvrive.
Can you tell me where I can found this pedal's shematic or more informations.
Thanks !
Guillaume
Ps: Sorry for my very bad English , I 'm Belgian who speak french.
famillecrouquet 2 years ago
I'm selling this pedal kit at US$45 with Silk Screen printing box and everything need. Thanks!
emarkhk 2 years ago
I'll buy one. Send me some info please. I won't need the case though.
JayDubya1978 2 years ago
Where do you get the kits?
xxfaction6xx 2 years ago
@emarkhk Do you still have these for sale?
Please let me know at legionosh@msn.com
Thanks!
Legionosh 1 year ago