Bogner La Grange  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
Post Reply
Saruman
Degoop Doctor
Information
Posts: 61
Joined: 19 Jun 2009, 17:41
Been thanked: 126 times

Post by Saruman »

1.JPG
2.JPG
3.JPG
4.JPG
5.JPG
6.JPG
7.JPG
BLG_PIC_L.png
BLG_PIC.png

User avatar
Intripped
Cap Cooler
Information
Posts: 568
Joined: 25 Aug 2009, 01:03
Location: Italy
Has thanked: 735 times
Been thanked: 220 times

Post by Intripped »

wow, you've done a great work here! thanks!
how did you managed to remove that goop?

I see from the schem a lot of similarities with the zwex pedals (SHO, Box Of Rock, ...can you identify the transistors' numbers? bs170?), but there's also an opamp stage and hard clipping with different diodes options, which i don't recognize as a known circuit, in this moment.

Saruman
Degoop Doctor
Information
Posts: 61
Joined: 19 Jun 2009, 17:41
Been thanked: 126 times

Post by Saruman »

how did you managed to remove that goop?
Im Degoop Doctor :?

opamp (OPA132) K=1,5. Its boffer.

bs170 as in exampes:
Attachments
kaskad_.jpg

Saruman
Degoop Doctor
Information
Posts: 61
Joined: 19 Jun 2009, 17:41
Been thanked: 126 times

Post by Saruman »

La Grange is modified Zvex Box Of Rock.

fuzzbunny
Information
Posts: 42
Joined: 09 Jan 2012, 18:12
Has thanked: 33 times
Been thanked: 13 times

Post by fuzzbunny »

:applause: Bravo!

User avatar
bajaman
Old Solderhand
Information
Posts: 4419
Joined: 26 Jun 2007, 21:18
Location: New Brighton, Christchurch, NZ
Has thanked: 475 times
Been thanked: 1729 times

Post by bajaman »

:D
What is that pic chip for ?
be kind to all animals - especially human beings

User avatar
Intripped
Cap Cooler
Information
Posts: 568
Joined: 25 Aug 2009, 01:03
Location: Italy
Has thanked: 735 times
Been thanked: 220 times

Post by Intripped »

this La Grange looks like a combination of different pedals; from what i can see there is:

- a switchable BOOST section (SHO) in front

- an op-amp gain stage (if i'm not wrong the gain is 2.5, being R37(rf)=15K and R31(r2)=10K, in a non-inverting configuration)

Image


- a modified COT50, ala Briggs, with different clipping options, "nature"="blend" and "structure"=fixed value

Image


- a Box Of Rock with some tweaks and options

Chugs
Resistor Ronker
Information
Posts: 287
Joined: 16 May 2009, 09:47
Has thanked: 64 times
Been thanked: 46 times

Post by Chugs »

Nice work. Is there parts values for the schematic?

User avatar
bajaman
Old Solderhand
Information
Posts: 4419
Joined: 26 Jun 2007, 21:18
Location: New Brighton, Christchurch, NZ
Has thanked: 475 times
Been thanked: 1729 times

Post by bajaman »

That op amp buffer / gain stage looks a bit weird - if it is powered by+9 and -9 volt supplies why is there an additional +9v bias rail ?
be kind to all animals - especially human beings

Saruman
Degoop Doctor
Information
Posts: 61
Joined: 19 Jun 2009, 17:41
Been thanked: 126 times

Post by Saruman »

Is there parts values for the schematic?

Only after crack Red Ecstasy Pedal. Waiting for 3 years on this forum, but why owners Red Pedl are very lazy :cry:
I buy La Grage and after 5 days I havу it scematic.

That op amp buffer gain stage looks a bit weird - if it is powered by+9 and -9 volt supplies why is there an additional +9v bias rail ?

bias rail is + 0.7V gives maximum undistorted signal on opamp

Intripped, you are absolutely right! :applause: 15k,10k

User avatar
rcustoms
Resistor Ronker
Information
Posts: 417
Joined: 01 Oct 2009, 14:12
Location: COLOMBIA
Has thanked: 356 times
Been thanked: 503 times
Contact:

Post by rcustoms »

awesome work dude,values please to draw the pcb
http://www.rcustomspedals.blogspot.com
guitars,pedals and amps.
@zuleta.rafael(Instagram)

User avatar
Intripped
Cap Cooler
Information
Posts: 568
Joined: 25 Aug 2009, 01:03
Location: Italy
Has thanked: 735 times
Been thanked: 220 times

Post by Intripped »

Saruman wrote:Intripped, you are absolutely right! :applause: 15k,10k
i'm Resistor Ronker :?

...bytheway: what does ronker mean?

Saruman
Degoop Doctor
Information
Posts: 61
Joined: 19 Jun 2009, 17:41
Been thanked: 126 times

Post by Saruman »

I do not know, I'm not an еnglish speaker!

FuzzMonkey
Breadboard Brother
Information
Posts: 99
Joined: 28 Dec 2009, 22:10
Has thanked: 27 times
Been thanked: 23 times

Post by FuzzMonkey »

Intripped wrote:
Saruman wrote:Intripped, you are absolutely right! :applause: 15k,10k
i'm Resistor Ronker :?

...bytheway: what does ronker mean?
Try Urban Dictionary maybe???

User avatar
J0K3RX
Degoop Doctor
Information
Posts: 1048
Joined: 29 Jun 2011, 01:25
Location: US Florida
Has thanked: 313 times
Been thanked: 540 times

Post by J0K3RX »

FuzzMonkey wrote:
Intripped wrote:
Saruman wrote:Intripped, you are absolutely right! :applause: 15k,10k
i'm Resistor Ronker :?

...bytheway: what does ronker mean?
Try Urban Dictionary maybe???

I think it's pretty much the British equivalent of what Americans refer to as, trailer trash, white trash, wal-mart people etc.. Definitely not a compliment.. :lol:

orcl2
Information
Posts: 14
Joined: 16 Dec 2013, 20:49
Has thanked: 11 times

Post by orcl2 »

Hi guys, nice work by the way, did you have the schem fot this?

Saruman
Degoop Doctor
Information
Posts: 61
Joined: 19 Jun 2009, 17:41
Been thanked: 126 times

Post by Saruman »

to be continued.....

FuzzMonkey
Breadboard Brother
Information
Posts: 99
Joined: 28 Dec 2009, 22:10
Has thanked: 27 times
Been thanked: 23 times

Post by FuzzMonkey »

Saruman wrote:to be continued.....
I look forward to it. Can I ask if the pedal still works after de-gooping it? I know they're not exactly cheap.

Saruman
Degoop Doctor
Information
Posts: 61
Joined: 19 Jun 2009, 17:41
Been thanked: 126 times

Post by Saruman »

Рedal work after de-gooping. No problem.

Saruman
Degoop Doctor
Information
Posts: 61
Joined: 19 Jun 2009, 17:41
Been thanked: 126 times

Post by Saruman »

Image

Post Reply