Search found 141 matches

by guiltyspark
09 Oct 2019, 01:31
Forum: Parts Sourcing & Trading
Topic: buying transistors, ICs from ebay -- ant-notes for beginners
Replies: 5
Views: 3196

Re: buying transistors, ICs from ebay -- ant-notes for begin

I will say I've gotten some really nice parts off of ebay, almost all were legit. I would say to watch out for vintage carbon comp resistors, as these almost always increase in value over decades. In other words, your 100k resistor will actually measure 120k. Not good. That goes for old CC resistors...
by guiltyspark
09 Oct 2019, 01:09
Forum: Davidoff Library
Topic: Building Valve Amplifiers by Morgan Jones
Replies: 7
Views: 20935

Re: Building Valve Amplifiers by Morgan Jones

I happened to see my old post here, original link is quite dead. But I found this link on google for the THIRD edition of this book, 600+ pages in PDF form. Link seems legit, make sure your antivirus is working and take the usual precautions when downloading from an unknown site. http://milas.spb.ru...
by guiltyspark
16 Sep 2017, 05:53
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [traced]
Replies: 663
Views: 204451

Re: Friedman BE-OD Pedal [traced]

FWIW I like to do some chip swapping. I don't do that stupid chip stacking, I just swap known good sounding dual op amps. With some circuits, like heavily modded/gained out TS808's, I hear a lot of difference with different chips. I play palm muted chunky Metal/Punk, and with that style the differe...
by guiltyspark
29 Aug 2017, 15:26
Forum: Boutique Stompboxes dissected...
Topic: Friedman BE-OD Pedal [traced]
Replies: 663
Views: 204451

Re: Friedman BE-OD Pedal [traced]

The whole reason I say I have a healthy scepticism re the differences op-amps can make is because in previous builds I have tried many different op-amps, from the JRC4558 to TL072, TL082, TL062, TL272CP, OP275GP, OPA2134PA, and probably some others I can't remember. To be frank I rarely hear a diff...
by guiltyspark
03 Feb 2016, 07:51
Forum: Pimp-My-Cheap-Pedal
Topic: Boss - Metal Zone MT2 mods
Replies: 130
Views: 189727

Re: Boss - Metal Zone MT2 mods

Here's a link to a pretty nice looking MT2 mod: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwjMh57Fj9vKAhVB2R4KHR1eDSYQFggdMAA&url=http%3A%2F%2Fwww.musiker-board.de%2Fattachments%2Fboss-mt-2-sustainiac-mod-pdf.115119%2F&usg=AFQjCNFEfwnrufujrzWtVWoPyAkqSUM1FQ&sig2=Ff81OC...
by guiltyspark
31 Jan 2016, 20:46
Forum: Pimp-My-Cheap-Pedal
Topic: Boss - DS-1 Distortion mods (what works, what doesn't?)
Replies: 226
Views: 204320

Chip substition in newer DS-1

I had a dead newer (5223 chip) DS1 come in, turns out the chip was toast. I didn't have another SIP chip handy so I used a DIP8 adapter. First I put in a trusty TI 4558. Sounded like crap, I thought something else was wrong with the pedal. Very distorted sounding, not in a good way. Tried a TLE2072,...
by guiltyspark
18 Jun 2015, 23:47
Forum: Boutique Stompboxes dissected...
Topic: AMT - Legend Amp Series 2 [traced]
Replies: 124
Views: 63606

Re: AMT - Legend Amp Series 2 [traced]

I've owned 3 of these AMT legend pedals, the Recto, 5150 and Bogner. I kept the B2 (Bogner), I like it a lot. I use it for a gainly Marshallish crunch tone. I think the AMT's are built well and are good sounding. If you get one used it's a lot of pedal for the money IMO. I think the "1" series, E1, ...
by guiltyspark
15 Aug 2013, 16:37
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Ibanez - Bottom Booster 9 [schematic]
Replies: 8
Views: 5701

Re: Ibanez - Bottom Booster 9 [schematic]

Well, to my ear the 1n4002 do not sound especially good in this circuit. As someone said above, it's somewhat "splattery" sounding and that's who I was addressing with that comment. Note that I didn't say board mounted jacks/pots were bad - I simply pointed out that Ibanez has changed their construc...
by guiltyspark
15 Aug 2013, 04:52
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Ibanez - Bottom Booster 9 [schematic]
Replies: 8
Views: 5701

Re: Ibanez - Bottom Booster 9 [schematic]

I just got one of these. Thx to Dirk for the schem! I'm not sure on the circuit but the charge pump makes me think of a Klon, although the rest of the circuit doesn't exactly. It seems Ibanez is using 1n4002 diodes as clippers on the gain control, I'm not sure this is the best choice of diodes. In f...
by guiltyspark
06 May 2013, 01:35
Forum: Davidoff Library
Topic: Building Valve Amplifiers by Morgan Jones
Replies: 7
Views: 20935

Building Valve Amplifiers by Morgan Jones

Dig around on this site, there's a lot of interesting stuff including other books by Jones. They will cut you off after you download 5-6 items and attempt to get you to join and make a "donation"

http://milas.spb.ru/~kmg/files/literatu ... dition.pdf
by guiltyspark
22 Apr 2013, 05:16
Forum: Davidoff Library
Topic: Electronics For Guitarists (300 pg textbook)
Replies: 0
Views: 3966

Electronics For Guitarists (300 pg textbook)

Nice newer book here, pretty comprehensive with a lot of math. Credit to original Russian poster:
http://www.box.net/shared/7t16gk8nuf
by guiltyspark
09 Jan 2013, 02:30
Forum: Boutique Stompboxes dissected...
Topic: Bogner - Ecstasy Red
Replies: 61
Views: 30546

Re: Bogner Ecstasy Red

Just want to say thx to the forum members for posting pics of these! I don't think we'll be cloning these anytime soon, judging by the gut shots. I kinda want the Über pedal but I own the amp so it seems stupid to buy the pedal. :slap: There seems to be quite a few of these on eBay at $220ish, I mig...
by guiltyspark
08 Jan 2013, 06:24
Forum: Parts Sourcing & Trading
Topic: 2) ADA Flanger Clone boards f/s from Moosapotamus's project
Replies: 3
Views: 2612

2) ADA Flanger Clone boards f/s from Moosapotamus's project

Hey guys, I have 2 new boards from the ADA Flanger clone project from a few years back, version 3. They are mint and untouched. I haven't gotten around to building it so I figured it was time to let them fly. Note that these are super quality boards, as good as it gets, really. Pics available if you...
by guiltyspark
07 Jan 2013, 22:47
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Modtone Vintage Wah [guts]
Replies: 4
Views: 1958

Re: Modtone Vintage Wah [guts]

Thx, it seems pretty well built. Even has the super Mojo Halo inductor! How does it sound?
by guiltyspark
07 Jan 2013, 22:41
Forum: Modern Stompbox Effects (1975 - ...)
Topic: EHX - Deluxe Memory Man (SAD 1024A) EH7550 [schematic]
Replies: 103
Views: 137905

Re: EH - Deluxe Memory Man (guts) [schematic]

Old post! I had cut and pasted this DMM info from somewhere on the net, glad to hear it works. I still have my RI DMM, maybe I'll try this mod.
by guiltyspark
01 Apr 2009, 21:06
Forum: Parts Sourcing & Trading
Topic: Vintage/Rare Component Harvesting/Removal Finds
Replies: 125
Views: 25164

Re: Vintage/Rare Component Harvesting/Removal Finds

Cheers for the post Lovekraft some interesting ideas there, lol not a fan of Dunlop then? Just bought a bulk lot of radio parts on ebay myself and will report on any finds along with any model numbers i can when they get here. Thanks, Scruffie I'll try to think of some more. I find the Dunlop GCB-9...
by guiltyspark
31 Mar 2009, 19:28
Forum: Boutique Stompboxes dissected...
Topic: Hermida Audio - Zendrive [ goop-alarm ] [traced]
Replies: 342
Views: 155839

Re: Hermida Audio - Zendrive [ goop-alarm ] [traced]

Back to the chip, might have to disagree on the AD712 being the stock chip. I just got a 712 and it looks nothing like the stock chip, plus it has a notch at one end. Stock chip looks like a TI or Fairchild product to me.

Guiltyspark
by guiltyspark
20 Mar 2009, 15:22
Forum: Boutique Stompboxes dissected...
Topic: Paul Cochrane - Timmy [traced]
Replies: 581
Views: 172175

Re: Paul Cochrane - Timmy [traced]

Paul, on another subject, would you mind telling us what kind of clear coat you're using on your pedals? It seems to be pretty tough and shiny. I'm using some clear now that seems kind of "plastic-y", I'd like a more professional finish. I assume you're using a 2 part self hardening auto type clear...