Search results

That tracks with our testing although so far I don't believe we've had cause to test Ices directly, but we do have the means to if needed. When leakage parameters are given in the datasheets we are comparing against we typically see Icbo or Iceo values which is always part of our tests. The %...

It varies a bit depending on what we’re inspecting and the source, but we start with a visual inspection. We're fortunate enough to have access to a lot of desirable semiconductor types from various manufacturers from the work we do here and from the personal collections of the builders we have...

To the best of our knowledge, our current stock is the Unizon 1N34A as seen on this page. Keep in mind that the brands we carry (and our sister company AES/tubesandmore carries) for NOS products can change unless stated otherwise as we work to maintain stock of an item that is only getting more...

These were designed in-house to match vintage spec and then custom-made for our customers. The price reflects that process - we'd make it cheaper if we could! We're always looking to reduce costs so if we find a way to do it, we will. We are hoping to fill a gap in the market for folks looking...

Here's someone who did just that, although I can't verify it ofc.

Nice. Typically, I wouldn't sweat my bias voltages too much as long as it sounded nice, particularly if they're just a bit off, but I still feel like there's something a little odd at play here. 220k for Q1C is pretty massive, and your Q2E voltage before that tweak tells me that a lot...

Q2E should be Q1C/Q2B minus the diode drop of the base-emitter junction of Q2. Not proportional, but Q2E should always be just a bit below those voltages, ~0.1-0.3V closer to zero in the case of germanium. Q1E should be grounded, so it should always be 0V in a Fuzz Face unless you've modified...

Hard to say because it's a third party seller there. The stock comes from Bridgold Direct, so it depends on what they are carrying. The printing looks very suspect to me. I think this is a genuine Intersil ICL7660S...

It is the below footswitch with a black Carling dress nut - the soft click on these is pretty similar to the feel of the Gorvas: https://www.amplifiedparts.com/products/footswitch-3pdt-solder-lugs-soft-click I like the Gorvas a lot too but they don't have a black option at this point. And...

I used the below jacks. The Lumberg types and enclosed Switchcraft types (111X, 112BX) will fit as well although these are a little more forgiving. https://www.amplifiedparts.com/products/jack-stereo-panel-mount-low-profile There should be measurements for the M45 here...

You should try the Gorva M45 if you haven't - it's just a little larger than the 1590A but designed so you can squeeze in top jacks including a power jack: Nice builds geoffrey. The Colorsound One Knob Fuzz is one of my favs - hard to beat for a one-knobber IMO.

Yes, when it's not bypassed, increasing the emitter resistor with no other changes will increase the input impedance, amp linearity, and bias stabilization for varying transistor specs, but it will decrease voltage gain. It will also raise the collector voltage, so it's probably wise to also...

Yes it's definitely true of the Rangemaster as well. Basically, anything with a common emitter stage (input to base, output from collector) at the input will have a fairly low input impedance if it does not have an emitter resistor (e.g. Fuzz Face, Tonebender Mk2, Fuzzrite, etc.) or if it has...

It'll work without trouble. BC338 without a suffix is just a non-hfe-selected version. If that's what was in originals (which seems to be the case), they may have been anywhere in the 100-630 hfe range so any of those should work just fine.

Nice, glad you got it going. That's correct - the original was wired "backwards" from what you'd normally do. When the pots are mounted on the top/back rather than the face of the enclosure, the intuitive way to turn the control "up" is turning the knob to the right, which is actually a...

Hi ChunkyKarma, the Fuzzrite board mounts to the case via the DPDT so using something else is tricky. The footswitch wiring on the Fuzzrite is particularly odd as well. I THINK that you should be able to do it with a minor tweak, but you should probably test this before soldering anything...

I'm repeating some of what has already been stated here, but to be able to connect them in whatever order you'd like, pedals should ideally be designed with high input impedance, and modern ones pretty much always are. Having a low input impedance loads the previous stage more. Low output...

Agree that they're most likely custom. They're made of folded sheet metal. I think sites like Ponoko will do custom designs in very small quantities (1?) but it's probably very expensive there. Some people buy a bending brake and attempt it at home with aluminum sheets, although depending on...

NKT222 was used in certain Tonebender Mk3 builds, so that's cool. There does seem to be a lack of online info about this type. In addition to the equivalents listed above, other 2GT types (2GT102) are listed as a European type here (pg 134): https://archive.org/details/transistor-equivalents...

What is it soldered to that's holding it in there? Just the power jack? I'd remove the pot hardware so the pots can just come right out and probably leave the wires connected to the board and see if there's enough slack in the wiring to flip the board over without de-soldering anything else. You...