Search found 37 matches

by bc108
13 Aug 2018, 22:25
Forum: Boutique Stompboxes dissected...
Topic: Lovepedal - Tchula [traced]
Replies: 25
Views: 10750

Re: Lovepedal - Tchula [traced]

Sounds great..!
Finished one by charge yesterday, and loved it.
Designed PCB, w/mounted pot, and aded master volume (green trimpot).
Used BC549C and VAT46.

Image
by bc108
06 Aug 2018, 23:44
Forum: Boutique Stompboxes dissected...
Topic: Throbak - Strangmaster [traced]
Replies: 9
Views: 2473

Re: Throbak strangmaster [traced]

For sure, it seems that they use 2n2222: maybe due the low hfe (like the Ge's one's).
For reference, take a look to the Catalinbread Naga Viper; Rangemaster NPN version, some add's and use a 2N2222 transistor.
by bc108
15 May 2018, 04:03
Forum: Boutique Stompboxes dissected...
Topic: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]
Replies: 25
Views: 10822

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

Yep... I guess 200 to 400 hfe are in the right values.
by bc108
15 May 2018, 01:37
Forum: Boutique Stompboxes dissected...
Topic: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]
Replies: 25
Views: 10822

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

Or the MPS3904 (almost the same as 2N3904), that I've read comes in the original.
by bc108
14 May 2018, 02:32
Forum: Boutique Stompboxes dissected...
Topic: Dunlop - JHF3 Band of Gypsys Fuzz Face [traced]
Replies: 25
Views: 10822

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

Any confirmation about Q2 and Q3?
I've read that they're MPSA3904's there
by bc108
09 May 2018, 00:40
Forum: Modern Stompbox Effects (1975 - ...)
Topic: MXR FET Driver (and a minor concern)
Replies: 11
Views: 8289

Re: MXR FET Driver

dan.schumaker wrote:Looks like Bugg already did a version of it....
http://www.pedalpcb.com/product/mosfetdriver/

I also have a 1590a version available...
Thanks there..!
Schematic here: http://www.pedalpcb.com/docs/MOSFETDriver.pdf
by bc108
05 May 2018, 17:09
Forum: Boutique Stompboxes dissected...
Topic: Lovepedal Jubilee
Replies: 14
Views: 8419

Re: Lovepedal Jubilee

And I'll add another question: which is the 370p cap function? The LM386 circuit has an high gain, and it is therefore even more important to suppress radio frequencies. The 370p capacitor forms together with internal resistance of the guitar circuit a low pass filter to get that done. Thanks Manfr...
by bc108
04 May 2018, 19:37
Forum: Boutique Stompboxes dissected...
Topic: Lovepedal Jubilee
Replies: 14
Views: 8419

Re: Lovepedal Jubilee

Love this one! Like the Purple Plexi. More punch and bass, and more controllable gain (due the input instead the irregular pot to ground). Question: is not redundant the B50K + 4k7 resistor (=~5k)??? I've ommited the 4k7 and place there a b5k pot. And I'll add another question: which is the 370p ca...
by bc108
04 May 2018, 19:36
Forum: Boutique Stompboxes dissected...
Topic: Lovepedal - Purple Plexi 800 [goop-alarm] [traced]
Replies: 218
Views: 73145

Re: Lovepedal - Purple Plexi 800 [goop-alarm] [traced]

Bump! :)

Which is the 370p cap function here?
Thanks
by bc108
03 May 2018, 23:17
Forum: Boutique Stompboxes dissected...
Topic: Lovepedal Jubilee
Replies: 14
Views: 8419

Re: Lovepedal Jubilee

Love this one! Like the Purple Plexi.
More punch and bass, and more controllable gain (due the input instead the irregular pot to ground).

Question: is not redundant the B50K + 4k7 resistor (=~5k)???
I've ommited the 4k7 and place there a b5k pot.
by bc108
28 Feb 2018, 03:09
Forum: Boutique Stompboxes dissected...
Topic: Lovepedal - Tchula [traced]
Replies: 25
Views: 10750

Re: Lovepedal - Tchula [traced]

bump! :roll:
by bc108
15 Feb 2018, 02:08
Forum: Boutique Stompboxes dissected...
Topic: Earthquaker Devices - Arrows [traced]
Replies: 10
Views: 2575

EQD Arrows [traced]

Anyone?


Another modified Electra?
by bc108
15 Feb 2018, 01:54
Forum: Boutique Stompboxes dissected...
Topic: Pigtronix - Polysaturator
Replies: 3
Views: 1890

Re: Pigtronix - Polysaturator

It's the first time I saw that use almost all the CD4049's inverters
Preamp/buffer with TL072 + CD4049 gain stages + 4558's active eq and output buffer... am I right?
by bc108
12 Feb 2018, 05:00
Forum: Boutique Stompboxes dissected...
Topic: Zvex - Box of Rock [traced]
Replies: 382
Views: 113490

Re: Zvex - Box of Rock [traced]

Sorry to bump.
Is there any verified schematic?

Thanks
by bc108
08 Feb 2018, 23:50
Forum: Boutique Stompboxes dissected...
Topic: Pigtronix - Fat Drive [traced]
Replies: 5
Views: 4609

Re: Pigtronix - Fat Drive [traced]

Red Llama inspired?
by bc108
05 Feb 2018, 02:34
Forum: Boutique Stompboxes dissected...
Topic: Walrus Audio Voyager / Iron Horse
Replies: 18
Views: 6222

Re: Walrus Audio Voyager / Iron Horse

Bump for the Iron Horse! :roll:
:horsey:
by bc108
08 Nov 2017, 00:30
Forum: Boutique Stompboxes dissected...
Topic: Crowther Audio - Hot Cake Overdrive [traced]
Replies: 303
Views: 117271

Re: Crowther Audio - Hot Cake Overdrive [traced]

Bump thread for this timeless gem.
Built the 03' version, NICE fuzzy OD: that's true the similar grain' with the BD2.

Used TL081, I'll try TL071.
A25K in reverse (as the old version?); 220R to lug 2, and lug 1 to ground: nice sweep.
by bc108
04 Oct 2017, 15:40
Forum: Modern Stompbox Effects (1975 - ...)
Topic: The great "I'd like to see the guts of" thread
Replies: 224
Views: 340975

Re: The great "I'd like to see the guts of" thread

Time ago I asked for any info about construction, gutshot, etc.. And some guy from Digitech Stuff made a very hostile joke :mrgreen: I must have been having a bad day. The only time I remember being snotty with someone about the Carcosa is when somebody asked for a schematic so they could "fix" the...
by bc108
28 Aug 2017, 20:26
Forum: Boutique Stompboxes dissected...
Topic: Crowther Audio - Prunes & Custard
Replies: 173
Views: 54487

Re: Crowther Audio - Prunes & Custard

Bump around here! :)

I'll start with this one.
Image

Is this layout verified?
I've readed all the pages, and almost all the links and pics are down.

Thanks! :thumbsup