vigilante398
Authorized Vendor
Yup, and I regretted putting it inOh, that one was good enough to get a Footswitch!
Vampire Slayer DIY PCB?
- Thread starter iamjackslackof
- Start date
Is that coz it partially covered your Buffer print?Yup, and I regretted putting it in
vigilante398
Authorized Vendor
That was certainly part of itIs that coz it partially covered your Buffer print?
Also this is a 1590B so I was already pressed for space, I could have routed things a lot better if I didn't have to route around a big cutout and extra pads.vigilante398
Authorized Vendor
Got mine printed and powdercoated last night, also swapped the tube for a NOS Tung-Sol. May have to see if I have any more of the black M3 screws, they're a little smaller and look a little cleaner I think.
The UV prints are coming out a lot more crisp now that I replaced the water pump. Yes, UV printers have water pumps. No, they're not fun to work on.
The UV prints are coming out a lot more crisp now that I replaced the water pump. Yes, UV printers have water pumps. No, they're not fun to work on.
drgonzo1969
Well-known member
looks killer! love the art! it reminds of castlevania: symphony of the night artwork
vigilante398
Authorized Vendor
I should probably finish putting this build doc together so you guys can pick this one up. Maybe today?
The materials for UV printing apparently do more than look killer. Nasty stuff used to great effect!
vigilante398
Authorized Vendor
They certainly have that sort of smell.
Smrtokvitek
Well-known member
I was interested to see how it works, so I made an LTspice model of this and have several questions.
You have used 680nF in the schematic but 470n in your build. Why?
What tube type have you used? You have used a 100V rating for caps but if you use 12AU7 there is about 122V at cathodes. If you use 12AX7 there should be around 40V there.
vigilante398
Authorized Vendor
Solid questions.
470nF was used in place of 680nF because I have 470nF on hand and don't have 680nF on hand, and the value of the cathode cap in the cathode follower isn't as critical as the fact that it's "big". The difference in frequency response between 470nF and 680nF here is minimal, and going to a smaller cap would just start rolling off low end.
You're absolutely correct, with a 235V rail I'm measuring 110V at the cathode, 105V at the other end of the 1k resistor. 12AT7 would be the better choice here, I'll make a note in the build doc not to use 12AU7. Thanks!
matmonster58
Active member
I'm definitely interested in picking one of these up. I live mostly in the acoustic world and tube buffers do some magic to piezo pickups.
Is bumping up the input impedence as easy as increasing R3? I'd like to try ~10M
Is bumping up the input impedence as easy as increasing R3? I'd like to try ~10M
vigilante398
Authorized Vendor
Yup exactly that. Back when I sold these commercially I had a few upright bassists request that for exactly that reason.
vigilante398
Authorized Vendor
VAMPIRE SLAYER IS FINALLY AVAILABLE FOR SALE!!!
New website, new format, new person handling stuff, but I'm still very involved.
c2celectronics.com
Enclosures are no longer available on the same page, you can order them separately here:
c2celectronics.com
New website, new format, new person handling stuff, but I'm still very involved.
Vampire Slayer PCB Set
This is a PCB set for building your own Vampire Slayer buffer. This is not a beginner project, so if you’ve never built a pedal before, then this isn’t for you. I’ve tried to make this as affordabl…
c2celectronics.com
Enclosures are no longer available on the same page, you can order them separately here:
Pre-Drilled Enclosure
This option is to include a pre-milled enclosure for your PCB project. Enclosures are bare aluminum, no finish, CNC-milled. I try to get these done as quickly as possible, but please allow up to 3 …
c2celectronics.com
Feral Feline
Well-known member
GEEZE that's a tiny footswitch!
matmonster58
Active member
The new site looks great
Is there anyway to get powder coated enclosure from y'all or the drill templates to get tayda enclosures
Is there anyway to get powder coated enclosure from y'all or the drill templates to get tayda enclosures
vigilante398
Authorized Vendor
I'm not planning to offer powdercoats, but I do have tayda templates for most of the projects. I think I'm still missing Vampire Slayer, but it shouldn't take long to get posted.
I'll update this list here when it's done.
Sushi Box - Tayda Drill Templates
It was requested that I put together some Tayda drill templates for my DIY projects for those that are inclined to use that sort of thing. These have all been verified for fit with the corresponding PCB. Please tag me in any build reports using these. Not because I need them for my records or...
forum.pedalpcb.com
matmonster58
Active member
Heads up I think there may be some minor mistakes in the BOM. Double check the schematic if you're ordering individual resistors.
It shouldn't be a problem for most people since most people order resistors in packs of ten or more
It shouldn't be a problem for most people since most people order resistors in packs of ten or more
vigilante398
Authorized Vendor
Can you let me know what they are? I try to fix things that need fixing.
Tassieviking
New member
`I just checked the PCB to the schematic, component ref's do not match so follow value on PCB's I would say.
27k resistors should be 2 off (R1,R2 on PCB)
47k resistor should be 2 off (R5, R6 on PCB)
1M resistor should be 1 off (R3 on PCB)
All else seems fine to me.
Cheers
Mick
27k resistors should be 2 off (R1,R2 on PCB)
47k resistor should be 2 off (R5, R6 on PCB)
1M resistor should be 1 off (R3 on PCB)
All else seems fine to me.
Cheers
Mick
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