Mr. Black Boost Tiger  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
User avatar
mmolteratx
Degoop Doctor
Information
Posts: 508
Joined: 19 Dec 2009, 01:50
Has thanked: 93 times
Been thanked: 619 times

Post by mmolteratx »

Traced from prototype #1/9. Jack has said that there are a few changes with the production model, but they're mostly with the PCB itself.

Image
Image
Image
Attachments
Boost Tiger.png
Boost Tiger.png (8.58 KiB) Viewed 5037 times

User avatar
Jack Deville
Resistor Ronker
Information
Posts: 403
Joined: 02 Apr 2009, 06:21
Completed builds: too many. too many.
Location: Portland, OR
Has thanked: 1 time
Been thanked: 86 times
Contact:

Post by Jack Deville »

:applause:
Pretty close.
I'm a "professional."
Buy my products and make me rich.

www.jackdeville.com

User avatar
Ice-9
Degoop Doctor
Information
Posts: 1094
Joined: 31 Mar 2009, 15:29
my favorite amplifier: Marshall
Completed builds: Far to many to afford the enclosures for them all. :)
Has thanked: 134 times
Been thanked: 359 times
Contact:

Post by Ice-9 »

After reading Jack's excellent article on True Bypass I am surprised to see a pull down resistor in there as well as the current limiting resistor. For any one interested in the article its over on his Mr Black site under the "Straight Jive" menu. A great read for anyone that has not yet read it. :applause:
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?

User avatar
Jack Deville
Resistor Ronker
Information
Posts: 403
Joined: 02 Apr 2009, 06:21
Completed builds: too many. too many.
Location: Portland, OR
Has thanked: 1 time
Been thanked: 86 times
Contact:

Post by Jack Deville »

Maybe you should think about why it might be there.
I'm a "professional."
Buy my products and make me rich.

www.jackdeville.com

User avatar
D-Day
Mojo Book Buster
Information
Posts: 248
Joined: 24 Jun 2010, 23:04
my favorite amplifier: Soldano SLO 100
Completed builds: Bazzfuss, Fuzz Face, Fuzzface SG
Location: SEATTLE ROCK CITY
Has thanked: 107 times
Been thanked: 23 times

Post by D-Day »

Played this one at the guitar show down in Kent. Fantastic boost!

User avatar
marshmellow
Cap Cooler
Information
Posts: 469
Joined: 16 Aug 2007, 07:31
Location: Germany
Has thanked: 20 times
Been thanked: 127 times

Post by marshmellow »

Ole Jack sure has come a long way since then :roll:.

User avatar
Jack Deville
Resistor Ronker
Information
Posts: 403
Joined: 02 Apr 2009, 06:21
Completed builds: too many. too many.
Location: Portland, OR
Has thanked: 1 time
Been thanked: 86 times
Contact:

Post by Jack Deville »

Boost Tiger is a fantastic clean booster / pre-amp.
Currently in production: Rev B1.
Now you have a clean, complete schematic. Build one for yourself and rock.
:hug:
Attachments
Mr. Black Boost Tiger Rev. B1 Schematic
Mr. Black Boost Tiger Rev. B1 Schematic
I'm a "professional."
Buy my products and make me rich.

www.jackdeville.com

User avatar
Jack Deville
Resistor Ronker
Information
Posts: 403
Joined: 02 Apr 2009, 06:21
Completed builds: too many. too many.
Location: Portland, OR
Has thanked: 1 time
Been thanked: 86 times
Contact:

Post by Jack Deville »

marshmellow wrote:Ole Jack sure has come a long way since then :roll:.
Quite a different circuit, although kudos! There are opamps in both.
I'm a "professional."
Buy my products and make me rich.

www.jackdeville.com

User avatar
D-Day
Mojo Book Buster
Information
Posts: 248
Joined: 24 Jun 2010, 23:04
my favorite amplifier: Soldano SLO 100
Completed builds: Bazzfuss, Fuzz Face, Fuzzface SG
Location: SEATTLE ROCK CITY
Has thanked: 107 times
Been thanked: 23 times

Post by D-Day »

Hay Jack! What's with that Devo hat lookin 123 gnd thingy?

User avatar
Jack Deville
Resistor Ronker
Information
Posts: 403
Joined: 02 Apr 2009, 06:21
Completed builds: too many. too many.
Location: Portland, OR
Has thanked: 1 time
Been thanked: 86 times
Contact:

Post by Jack Deville »

D-Day wrote:Hay Jack! What's with that Devo hat lookin 123 gnd thingy?
My tribute to a great band.
I'm a "professional."
Buy my products and make me rich.

www.jackdeville.com

User avatar
D-Day
Mojo Book Buster
Information
Posts: 248
Joined: 24 Jun 2010, 23:04
my favorite amplifier: Soldano SLO 100
Completed builds: Bazzfuss, Fuzz Face, Fuzzface SG
Location: SEATTLE ROCK CITY
Has thanked: 107 times
Been thanked: 23 times

Post by D-Day »

:block:

User avatar
mmolteratx
Degoop Doctor
Information
Posts: 508
Joined: 19 Dec 2009, 01:50
Has thanked: 93 times
Been thanked: 619 times

Post by mmolteratx »

D-Day wrote:Hay Jack! What's with that Devo hat lookin 123 gnd thingy?
It's the little grounding tab. Love those things. Keystone 629, IIRC. Got a bunch of them to use in my pedals.

User avatar
marshmellow
Cap Cooler
Information
Posts: 469
Joined: 16 Aug 2007, 07:31
Location: Germany
Has thanked: 20 times
Been thanked: 127 times

Post by marshmellow »

Jack Deville wrote:
marshmellow wrote:Ole Jack sure has come a long way since then :roll:.
Quite a different circuit, although kudos! There are opamps in both.
I see, you now vary the feedback resistor, those three years of research have been well spent. And you finally did take my advice regarding the bias buffering, my hat's off to you :lol:. Or does the ingenuity lie in the split resistor arrangement on the input and output?

User avatar
Jack Deville
Resistor Ronker
Information
Posts: 403
Joined: 02 Apr 2009, 06:21
Completed builds: too many. too many.
Location: Portland, OR
Has thanked: 1 time
Been thanked: 86 times
Contact:

Post by Jack Deville »

You got a bone to pick? Go buy a roast chicken.
Upset for some reason? Perhaps you should take some time to reflect on your life. I don't have time for you.
I'm a "professional."
Buy my products and make me rich.

www.jackdeville.com

User avatar
Ice-9
Degoop Doctor
Information
Posts: 1094
Joined: 31 Mar 2009, 15:29
my favorite amplifier: Marshall
Completed builds: Far to many to afford the enclosures for them all. :)
Has thanked: 134 times
Been thanked: 359 times
Contact:

Post by Ice-9 »

Jack Deville wrote:Maybe you should think about why it might be there.
I can't see how the 3PDT is wired up in the picture so maybe you not using that bypass system on this pedal ? or switch bounce is still causing a little pop without s pulldown resistor there ? I need enlightened. :popcorn:

Edited after noticing the post above , I just seen you posted the official schem with the switch in so it is that input grounding type series current resistor bypass typo thing. Thanks for showing us all that.

Extra - I managed to get a tunnelworm imported from USA last week. sounds great.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?

User avatar
skywise
Breadboard Brother
Information
Posts: 79
Joined: 23 Dec 2011, 05:09
Has thanked: 48 times
Been thanked: 22 times

Post by skywise »

Jack Deville wrote:Maybe you should think about why it might be there.
To keep input impedance lower than the max possible from the op amp?

User avatar
Ice-9
Degoop Doctor
Information
Posts: 1094
Joined: 31 Mar 2009, 15:29
my favorite amplifier: Marshall
Completed builds: Far to many to afford the enclosures for them all. :)
Has thanked: 134 times
Been thanked: 359 times
Contact:

Post by Ice-9 »

skywise wrote:
Jack Deville wrote:Maybe you should think about why it might be there.
To keep input impedance lower than the max possible from the op amp?
I did consider that it was about input impedance, but I would have thought the 470K resistor going to VBias does that job anyway.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?

User avatar
marshmellow
Cap Cooler
Information
Posts: 469
Joined: 16 Aug 2007, 07:31
Location: Germany
Has thanked: 20 times
Been thanked: 127 times

Post by marshmellow »

Jack Deville wrote:You got a bone to pick? Go buy a roast chicken.
Upset for some reason? Perhaps you should take some time to reflect on your life. I don't have time for you.
Yeah, maybe better spend your time studying a book on electronics every once in a while instead, because what I had to read on your tech blog (or whatever you want to call it) today is rather alarming. For naming yourself the "effects wizard" you seem to be remarkably ignorant concerning some basic principles. Like the distinction between current and voltage, for instance. You use the terms practically synonymously and throw them around like there is no tomorrow. And so on...

User avatar
bufferz
Information
Posts: 11
Joined: 01 Apr 2011, 15:58
Has thanked: 3 times
Been thanked: 1 time

Post by bufferz »

Can someone help explain the reason for the 1k resistors at the input and output, just seems unique to me and would like to learn.
Also, I do not have any 56k resistors, can someone explain what they are doing in this circuit, are they just voltage dividers?

Cheers

User avatar
jymaze
Resistor Ronker
Information
Posts: 374
Joined: 06 Mar 2011, 22:19
Has thanked: 86 times
Been thanked: 171 times

Post by jymaze »

Output 1k resistor: limit current in case of short-cut at the output and lowers pop sound

Input 1k resistor: lowers pop-sound

You can use 47k or 68k for the voltage divider (you wrote 56k resistors, but you meant 51k, right?)

Post Reply