Search found 251 matches

by The G
26 Jun 2020, 14:17
Forum: Pedal Debugging & Troubleshooting Support
Topic: Buffer adding hisssssssss
Replies: 10
Views: 238

Re: Buffer adding hisssssssss

If that's a standard op amp voltage follower and you're using an IC socket, you could just take out the IC, connect the input to output in the socket and see if the hiss is still there.
by The G
23 Jun 2020, 10:29
Forum: Pimp-My-Cheap-Pedal
Topic: Rocktek Metal Worker
Replies: 9
Views: 3530

Re: Rocktek Metal Worker

Hey Huevo, I'd like to try tracing your pedal. For that, high resolution images of both sides of the board would be needed - the pictures you posted are way too small. Try to take the pictures as similar as you can, because I'll overlap one onto the other. Also, many of the resistors are vertically ...
by The G
20 Jun 2020, 12:12
Forum: Announcements and Forum Rules
Topic: Report Forum problems here
Replies: 168
Views: 206444

Re: Report Forum problems here

That is WAI actually. Nevertheless, it's bad user experience, thank you for making me aware of it. I made it so it is collapsed by default. I used the <details> HTML element so it would work with no JavaScript. Sadly (not really :lol: ), it will not work in Internet Explorer. I don't really care abo...
by The G
19 Jun 2020, 11:58
Forum: Announcements and Forum Rules
Topic: Report Forum problems here
Replies: 168
Views: 206444

Forum "vintage" style available

Built a new style called "vintage" for nostalgics out there and renamed the current one to "modern". Keep in mind that "vintage" will not see any changes/improvements/whatever. LATER EDIT: to put things in perspective - we have now 4 members using the "prosilver" style (the old phpBB default style) ...
by The G
18 Jun 2020, 22:13
Forum: Announcements and Forum Rules
Topic: Report Forum problems here
Replies: 168
Views: 206444

Re: Report Forum problems here

For anyone wanting the traditional phpBB look:

User Control Panel > Board preferences > My board style > choose "prosilver" (the default phpBB style)

I'd probably could build a style from the version that used your system fonts. But it'll be the stepchild.
by The G
28 May 2020, 10:41
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Questions about Boss CS-1
Replies: 20
Views: 1725

LM317 adjustable current source

One option is this (adapted from imajeenyus.com ): lm317_adjustable_current_source.jpg Read the article before building it. According to my calculations, R1 = 22kΩ, R2 = 330Ω, and R3 = 100kΩ would give you current intensity between ∼0.06mA and ∼17.3mA. Of course, measure it before burning your optoc...
by The G
26 May 2020, 12:30
Forum: Announcements and Forum Rules
Topic: Report Forum problems here
Replies: 168
Views: 206444

We're on PHP 7.4 now.

We're running on PHP 7.4 now.
Please let us know if you notice anything amiss.
Thank you!
by The G
19 May 2020, 00:50
Forum: Announcements and Forum Rules
Topic: FORUM UPGRADES DONE: Friday 8th MAY 2020 09.00 CET - Saturday 9th 13.00 CET
Replies: 77
Views: 6946

Re: FORUM UPGRADES DONE: Friday 8th MAY 2020 09.00 CET - Saturday 9th 13.00 CET

The missing image it's because of the same http issue. I'm searching for a more exhaustive solution. Meanwhile :lol: ... Did you know that ...freestompboxes.org has 42855 posts containing non-secure "http://" links? ...which link to 7764 domains (not counting subdomains)? ...also freestompboxes.org ...
by The G
18 May 2020, 12:11
Forum: Announcements and Forum Rules
Topic: FORUM UPGRADES DONE: Friday 8th MAY 2020 09.00 CET - Saturday 9th 13.00 CET
Replies: 77
Views: 6946

Re: FORUM UPGRADES DONE: Friday 8th MAY 2020 09.00 CET - Saturday 9th 13.00 CET

In some posts there are linked images, the links are OK but the images are not visible. In the page source they look like: <img src="" class="postimage" alt="Image"> example: https://www.freestompboxes.org/viewtopic.php?p=249027#p249027 It is related to the security measures in place - the image ha...
by The G
12 May 2020, 13:58
Forum: Announcements and Forum Rules
Topic: FORUM UPGRADES DONE: Friday 8th MAY 2020 09.00 CET - Saturday 9th 13.00 CET
Replies: 77
Views: 6946

Re: FORUM UPGRADES DONE: Friday 8th MAY 2020 09.00 CET - Saturday 9th 13.00 CET

x-tn wrote:
12 May 2020, 13:35
[...]
Saw another one:
"The extension otf has been deactivated..."
viewtopic.php?p=278395#p278395
Added.
by The G
12 May 2020, 08:59
Forum: Announcements and Forum Rules
Topic: FORUM UPGRADES DONE: Friday 8th MAY 2020 09.00 CET - Saturday 9th 13.00 CET
Replies: 77
Views: 6946

Re: FORUM UPGRADES DONE: Friday 8th MAY 2020 09.00 CET - Saturday 9th 13.00 CET

Hey, dudes! I hope Modman will not mind me stepping in on this one: before the update of the forum, it had only one layout ("style" in phpBB lingo) - the default "prosilver". The few modifications needed for personalization and usability - logo, full-width, and so on - were done directly in the sour...
by The G
31 Jan 2016, 16:24
Forum: Electric Guitar Rewiring
Topic: MEC WARWICK 3 BAND EQ RF ISSUE
Replies: 20
Views: 15913

Re: MEC WARWICK 3 BAND EQ RF ISSUE

As Bajaman said, the first op amp has a problem. I would take out the TL062, then measure the voltage at pin 3 (in the op amp socket) and resistance from each of the pins 1 and 2 to ground. The voltage should be VR and pins 1 and 2 should have no connection to the ground. I'd also test the electroly...
by The G
31 Jan 2016, 09:52
Forum: Electric Guitar Rewiring
Topic: MEC WARWICK 3 BAND EQ RF ISSUE
Replies: 20
Views: 15913

Re: MEC WARWICK 3 BAND EQ RF ISSUE

You should double check the schematic for R1 - it doesn't make much sense to bias the + input through R3, then connect it to the ground. Also, pins 10 and 5 of TL 064 should get some bias from somewhere. Double also, you may have missed a resistor from pin 14 to pin 6 of TL064. mw3_1.png Other than ...
by The G
07 Dec 2015, 08:25
Forum: Boutique Stompboxes dissected...
Topic: Amptweaker - Tight Metal [traced]
Replies: 634
Views: 202179

Re: amptweaker ? [traced]

Amptweaker - Tight Metal [traced]

You're kidding, right?
by The G
06 Oct 2015, 21:43
Forum: Amplifiers
Topic: TDA2030 Amp (Especially "Clean")
Replies: 6
Views: 5073

Re: TDA2030 Amp (Especially "Clean")

Use a notebook power supply - it's cheap, efficient and safe (emphasizing on safe). Messing with electrical power network can be lethal and in your circuit brings no benefit. Your best bet is the datasheet schematic and PCB - it's double tested by the manufacturer. Don't slip on the audiophyle slope...
by The G
06 Oct 2015, 16:42
Forum: Amplifiers
Topic: TDA2030 Amp (Especially "Clean")
Replies: 6
Views: 5073

Re: TDA2030 Amp (Especially "Clean")

Actually, internet is better than always. But the search engines' answers are only as good as your questions. It really helps to know more about whatever you're searcing for. 18V bipolar means three wires from the power supply to the amplifier: one with +9V, one with 0V (or ground) and one with -9V....
by The G
30 Sep 2015, 21:45
Forum: Boutique Stompboxes dissected...
Topic: AMT - Legend Amp Series 2 [traced]
Replies: 123
Views: 59993

Re: AMT - Legend Amp Series 2 [traced]

You're not talking about the thing that Burgs does with his left hand index, are you?
Hope you don't mind me insisting on this :cheers, the sound artifacts are really difficult to explain or even point to.
by The G
30 Sep 2015, 09:06
Forum: Boutique Stompboxes dissected...
Topic: AMT - Legend Amp Series 2 [traced]
Replies: 123
Views: 59993

Re: AMT - Legend Amp Series 2 [traced]

[...] Now this might seem nit picking and likely few would notice but it does have a few glitches on all the clips which seems to be a common issue with hi gain drive pedals. I can't think of a technical term to explain this quirk but it's a stutter mainly on sustained notes or chords. At above lin...
by The G
07 Sep 2015, 11:25
Forum: Boutique Stompboxes dissected...
Topic: AMT - Legend Amp Series 2 [traced]
Replies: 123
Views: 59993

Re: AMT - Legend Amp Series 2 [traced]

I was lazy, I knew that Bajaman already tried a J201 in a high-gain stage . But his post didn't have nice graphs so my simple mind overlooked it. Anyway, it's a good starting point for trying other JFETs and other supply voltages. @Bajaman, the datasheets show that the Forward Transfer Admittance pa...
by The G
06 Sep 2015, 10:17
Forum: Boutique Stompboxes dissected...
Topic: AMT - Legend Amp Series 2 [traced]
Replies: 123
Views: 59993

Re: AMT - Legend Amp Series 2 [traced]

The specific JFETs used by AMT (or JEFT with similar characteristics) are not easy to find and replacing them would require a serious analysis of the circuit to preserve the way it works and sounds. So I think it will take a while until someone will diy it. Later edit: Baja, maybe you could do a sim...