Search found 91 matches

by marcao_cfh
14 Sep 2020, 22:57
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: EHX Bad Stone
Replies: 14
Views: 1612

Re: EHX Bad Stone

marcao_cfh wrote: 14 Sep 2020, 21:38 The closest thing to a depth mod for a Bad Stone is already on the project: the feedback pot.
From Electro-Harmonix themselves: "Feedback determines the depth of the phase effect" (source: https://www.ehx.com/products/bad-stone).
by marcao_cfh
14 Sep 2020, 22:54
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: EHX Bad Stone
Replies: 14
Views: 1612

Re: EHX Bad Stone

https://www.freestompboxes.org/viewtopic.php?p=282172#p282172 You just ressurrected a 2014 asking about that depth mod that doesn't exist at all! All your posts you made are asking for that mod, even after being asked to stop flooding the topics asking for something that doesn't exist. So let me ask...
by marcao_cfh
14 Sep 2020, 21:38
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: EHX Bad Stone
Replies: 14
Views: 1612

Re: EHX Bad Stone

Ask the author of the link you sent ? They did it, actually. If you check the comments on that link you can see he already asked that... using 2 different accounts, and asking the same thing over and over again, even without getting an answer. Same way they asked here a few times, including on a Sm...
by marcao_cfh
11 Sep 2020, 13:05
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Shin Ei 8TR Fuzz Capacitor designations.
Replies: 6
Views: 541

Re: Shin Ei 8TR Fuzz Capacitor designations.

Ok, so you have two caps with values 200x smaller and one cap 5x bigger than what's expected to be, according to the schematic. This doesn't really mean the schematic is wrong, they may have used what they had on hand at the time (check the big muff versions story), or they just copy-pasted together...
by marcao_cfh
10 Sep 2020, 21:53
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Shin Ei 8TR Fuzz Capacitor designations.
Replies: 6
Views: 541

Re: Shin Ei 8TR Fuzz Capacitor designations.

Nice thing the schematic is inside the lid! That's exactly the same one that's around the internet. Just keep in mind they're not always correct. But anyway. When you read a schematic and/or parts value, keep in mind there are some values that are "standard" for some brands/types of parts and doesn'...
by marcao_cfh
10 Sep 2020, 01:10
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Shin Ei 8TR Fuzz Capacitor designations.
Replies: 6
Views: 541

Re: Shin Ei 8TR Fuzz Capacitor designations.

1H102K: 102 is basically the same as you read a resistor. 10 with two zeros = 1000. The unit is pF, so you have 1000pF = 1nF (or 0.001uF) .1K 50: not sure on this one. Probably 0.1uF 50V 50V .2: 0.2uF = 200nF. You'll probably find for sale a 220nF rather than a 200nF cap. 60V .05: 0.05uF = 50nF. You...
by marcao_cfh
14 Jul 2020, 00:41
Forum: Boutique Stompboxes dissected...
Topic: Bernard Raunig - Tube Pre Amp
Replies: 8
Views: 1288

Re: Bernard Raunig - Tube Pre Amp

Nice build. And nice story, he does seems like a very smart guy. I did some research on his story, and now I'm very curious on that circuit.
by marcao_cfh
02 Jan 2020, 19:53
Forum: DIY Stompbox designs
Topic: FULGORA DRIVE: a versatile single-transistor dirt box
Replies: 2
Views: 792

Re: FULGORA DRIVE: a versatile single-transistor dirt box

As basic as a single transistor gain stage is, it can sound so good and fun to play with. If you want to make it more versatile, here are a couple things you can try: 1- use a 1K pot wired as a variable resistor to ground instead of the 560r resistor. This will give you another gain pot. Btw, I'd ca...
by marcao_cfh
06 Sep 2019, 20:55
Forum: Ready-To-Build Effect Projects
Topic: Vandal - a 2-channel preamp inspired by the Randall RG100ES
Replies: 37
Views: 2323

Re: Vandal - a 2-channel preamp inspired by the Randall RG10

2N5485s, maybe? I built the red channel a few days ago using 85s, and had some issues too. Running the circuit at 18V, I got less distortion than I was expecting and volume below unity, even with the switch disengaged. Didn't tried other fets or voltages.
by marcao_cfh
02 Apr 2019, 00:32
Forum: DIY Stompbox designs
Topic: I've designed a Filter Pedal for Bass
Replies: 22
Views: 8037

Re: I've designed a Filter Pedal for Bass

snk wrote:PS : Can your circuit run at 18V (and can the MiniBomb too) ?
marcao_cfh wrote:Actually, the LM567 works better with voltages around 5-6V than 9V, at least in guitar effects. It's a kind of "bias" setting.
by marcao_cfh
05 Feb 2019, 01:08
Forum: Ready-To-Build Effect Projects
Topic: Baja low noise low current drain bass guitar preamp 121218 [verified]
Replies: 30
Views: 1981

Re: Baja low noise low current drain bass guitar preamp 1212 [verified]

Ok, so I shielded the bass and played with this preamp a little bit more. This is a little beast and what I can say to all the bass players is to just build it! I loved the distorted bass sound I can get at full volume. With a shielded bass and 9V battery, it's dead quiet. No noise at all. Mine is s...
by marcao_cfh
29 Jan 2019, 15:48
Forum: Ready-To-Build Effect Projects
Topic: Baja low noise low current drain bass guitar preamp 121218 [verified]
Replies: 30
Views: 1981

Re: Baja low noise low current drain bass guitar preamp 1212 [verified]

So I finally built and tested this one. I made the mistake of wiring both tone pots in reverse, since I'm not good on understanding tone stacks I go for the luck, it's a 50/50 chance of getting it right :lol:. The first thing I must say is this is loud. So loud it easily distorted my amp when I turn...
by marcao_cfh
24 Jan 2019, 13:42
Forum: Boutique Stompboxes dissected...
Topic: Zvex - Fuzz Factory [traced]
Replies: 941
Views: 201333

Re: Zvex - Fuzz Factory [traced]

Generic username, 3 posts. Surely doesn't know how things used to be 10-15 years ago. Or knows, but it's somebody that created a fake user to just cause discord. I do remember all the "hail Zvex" stuff, all the "you posted my schematic, remove it" stuff and the "we are forbidden of talking about Zve...
by marcao_cfh
16 Jan 2019, 22:31
Forum: DIY Stompbox designs
Topic: I've designed a Filter Pedal for Bass
Replies: 22
Views: 8037

Re: I've designed a Filter Pedal for Bass

Actually, the LM567 works better with voltages around 5-6V than 9V, at least in guitar effects. It's a kind of "bias" setting.
by marcao_cfh
11 Jan 2019, 05:37
Forum: Ready-To-Build Effect Projects
Topic: Baja low noise low current drain bass guitar preamp 121218 [verified]
Replies: 30
Views: 1981

Re: Baja low noise low current drain bass guitar preamp 1212 [verified]

if i'm reading the schematic correctly, the bass control is setup like a variable resistor/rheostat (only wiper and one of the lugs used) as opposed to a potentiometer (wiper and both lugs used), yes? I don't think that will make any difference. You'll just chamge the resistance between wiper and o...
by marcao_cfh
11 Jan 2019, 03:32
Forum: Ready-To-Build Effect Projects
Topic: Baja low noise low current drain bass guitar preamp 121218 [verified]
Replies: 30
Views: 1981

Re: Baja low noise low current drain bass guitar preamp 1212 [verified]

Nice you got it working! What was the problem? Now it's time to make the bass pot work.
I'm gonna try it soon, just need to etch the board (I'll be using Jarno's layout) and wait for some parts to arrive by mail.
by marcao_cfh
11 Jan 2019, 02:23
Forum: Ready-To-Build Effect Projects
Topic: Baja low noise low current drain bass guitar preamp 121218 [verified]
Replies: 30
Views: 1981

Re: Baja low noise low current drain bass guitar preamp 1212 [verified]

Jarno, your layout looks great! Just a few suggestions to make it more DIY friendly:
- bigger spacing between tracks and ground plane;
- wider tracks;
- bigger jumper pad.
The way you made is fine for professional pcbs/photosensive transfer, but for toner transfer it won't be an easy job.
by marcao_cfh
09 Jan 2019, 16:17
Forum: Boutique Stompboxes dissected...
Topic: OKKO Dominator [traced]
Replies: 151
Views: 53318

Re: OKKO Dominator [traced]

The schematic on the 1st post does work, that is the one you need. And there's a working layout somewhere on this post, in a pdf file. I built one using that layout.
by marcao_cfh
09 Jan 2019, 07:18
Forum: Announcements and Forum Rules
Topic: Report Forum Problems and Make Forum Wishes Here...
Replies: 204
Views: 212251

Re: Report Forum problems here

I say the same stuff: too much spam.
by marcao_cfh
09 Jan 2019, 07:14
Forum: Boutique Stompboxes dissected...
Topic: OKKO Dominator [traced]
Replies: 151
Views: 53318

Re: OKKO Dominator [traced]

What about checking, let's say, the 1st post on this topic???