Search found 281 matches

by johnk
11 May 2023, 17:45
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Ashdown - Bass Hyper Drive [schematic]
Replies: 9
Views: 5012

Re: Ashdown - Bass Hyper Drive [schematic]

i friend sent me his Lomenzo hyperdrive (and wants e to clone it in a smaller enclosure) but it has more parts than the schematic above. i built one according to the schematic above and while it works, it doesn't sound the same as the original.
by johnk
15 Oct 2022, 19:02
Forum: Boutique Stompboxes dissected...
Topic: Fairfield Circuitry ~900 fuzz
Replies: 9
Views: 3287

Re: Fairfield Circuitry ~900 fuzz

i don't see a trace or a schematic for it.
by johnk
12 May 2021, 21:33
Forum: DIY Projects
Topic: MN3002 to TDA1022P conversion PCB
Replies: 5
Views: 1330

Re: MN3002 to TDA1022P conversion PCB

well, the seller never shipped my conversion PCB and i'm not too happy about that.
by johnk
04 May 2021, 16:01
Forum: DIY Projects
Topic: MN3002 to TDA1022P conversion PCB
Replies: 5
Views: 1330

Re: MN3002 to TDA1022P conversion PCB

i'm replacing an MN3002 in a CE-1 clone with a TDA1022P.
by johnk
01 May 2021, 05:17
Forum: DIY Projects
Topic: MN3002 to TDA1022P conversion PCB
Replies: 5
Views: 1330

Re: MN3002 to TDA1022P conversion PCB

well, i just ordered one.
by johnk
30 Apr 2021, 22:31
Forum: DIY Projects
Topic: MN3002 to TDA1022P conversion PCB
Replies: 5
Views: 1330

MN3002 to TDA1022P conversion PCB

i'm looking to etch a PCB that would enable the use of a TDA1022P (16 pin) in place of an MN3002 (14 pin) but i don't know how the pinouts would have to be rearranged to make them match. i saw one available for purchase and was only $2.75 but the shipping was $30 from overseas. ( https://www.aaranis...
by johnk
16 Nov 2018, 03:46
Forum: DIY Projects
Topic: BAJA LA2A Style Optical Limiter [documentation]
Replies: 102
Views: 42358

Re: BAJA LA2A Style Optical Limiter [documentation]

nevermind. i just used an audio 10K pot for the limit control and it's perfect.
by johnk
16 Nov 2018, 00:15
Forum: DIY Projects
Topic: BAJA LA2A Style Optical Limiter [documentation]
Replies: 102
Views: 42358

Re: BAJA LA2A Style Optical Limiter [documentation]

how would i go about making the limit knob have a better sweep range?i used a 3mm diffused yellow LED and it works great, but the B10K limit knob has a very narrow range at the beginning of it's sweep. i tried it with both red and green opto leds but other than the amount of limiting, it still comes...
by johnk
26 Aug 2018, 19:05
Forum: Boutique Stompboxes dissected...
Topic: Hudson - Electronic Broadcast [traced]
Replies: 61
Views: 39289

Re: Hudson Electronic Broadcast [traced]

IMO an OC75 from musikding with an hfe of 50-60 would work well.
by johnk
25 Aug 2018, 17:56
Forum: Boutique Stompboxes dissected...
Topic: Toneczar - Openhaus [traced]
Replies: 365
Views: 162721

Re: Toneczar - Openhaus [traced]

here's one
by johnk
11 Jun 2018, 21:38
Forum: Boutique Stompboxes dissected...
Topic: Bearfoot - Candy Apple Fuzz [traced]
Replies: 30
Views: 18559

Re: BJF - Candy Apple Fuzz [traced]

i built one using this schematic and it's an awesome fuzz:
Candy Apple Fuzz.JPG

CAF-01.jpg
by johnk
11 Jun 2018, 07:27
Forum: Boutique Stompboxes dissected...
Topic: EarthQuaker Devices - Dirt Transmitter Fuzzdriver
Replies: 12
Views: 8192

Re: Dirt Transmitter flings the filth

i just built it and it sounds great. here's a pic of my PCB (using storyboardist's layout----thanks!): http://johnkvintageguitars.homestead.com/Effects/Fuzz-ODs/DirtTransmitter/DirtTransPCB-01.jpg and here's my completed build in a polished & etched 1590B with all top jacks:: http://johnkvintage...
by johnk
16 May 2018, 20:34
Forum: Boutique Stompboxes dissected...
Topic: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]
Replies: 26
Views: 17517

Re: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]

just finished etching the enclosure for mine:
by johnk
15 May 2018, 01:02
Forum: Boutique Stompboxes dissected...
Topic: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]
Replies: 26
Views: 17517

Re: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]

the reason that i asked is because, since i didn't have any BC558's (which is the first transistor and is a PNP) i tried a 2N2907A but i it just didn't sound right (too peaky and sharp). i then tried an MPS8598 with an hfe of 210 and it sounded really good. i also tried a BC559B with an hfe of 259 a...
by johnk
14 May 2018, 18:05
Forum: Boutique Stompboxes dissected...
Topic: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]
Replies: 26
Views: 17517

Re: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]

does anyone know which BC558 they used? BC558A, BC558B, or a BC558C?
by johnk
13 May 2018, 06:52
Forum: Boutique Stompboxes dissected...
Topic: Way Huge - Pork Loin [traced]
Replies: 96
Views: 64003

Re: Way Huge - Pork Loin [traced]

FeVeR2112 wrote:Johnk: Very nice shiny box.... how do you do your graphics? Looks engraved or etched...
they're acid etched.
by johnk
12 May 2018, 17:09
Forum: Boutique Stompboxes dissected...
Topic: Way Huge - Pork Loin [traced]
Replies: 96
Views: 64003

Re: Way Huge - Pork Loin [traced]

BTW, i also managed to fit it in a 1590B so made another one with a relayed true bypass:

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