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Bogner La Grange  [traced]

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Bogner La Grange  [traced]

Postby Saruman » 01 Jul 2016, 09:17

1.JPG
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BLG_PIC_L.png
BLG_PIC.png
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Re: Bogner La Grange

Postby Intripped » 01 Jul 2016, 12:36

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.
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Re: Bogner La Grange

Postby Saruman » 01 Jul 2016, 14:24

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

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

bs170 as in exampes:
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Re: Bogner La Grange

Postby Saruman » 01 Jul 2016, 17:11

La Grange is modified Zvex Box Of Rock.
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Re: Bogner La Grange

Postby fuzzbunny » 01 Jul 2016, 20:17

:applause: Bravo!
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Re: Bogner La Grange

Postby bajaman » 01 Jul 2016, 23:05

:D
What is that pic chip for ?
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Re: Bogner La Grange

Postby Intripped » 02 Jul 2016, 12:31

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
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Re: Bogner La Grange

Postby Chugs » 03 Jul 2016, 07:56

Nice work. Is there parts values for the schematic?
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Re: Bogner La Grange

Postby bajaman » 03 Jul 2016, 08:19

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 ?
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Re: Bogner La Grange

Postby Saruman » 03 Jul 2016, 11:05

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
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Re: Bogner La Grange

Postby rcustoms » 03 Jul 2016, 21:23

awesome work dude,values please to draw the pcb
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Re: Bogner La Grange

Postby Intripped » 04 Jul 2016, 12:27

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


i'm Resistor Ronker :?

...bytheway: what does ronker mean?
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Re: Bogner La Grange

Postby Saruman » 04 Jul 2016, 16:34

I do not know, I'm not an еnglish speaker!
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Re: Bogner La Grange

Postby FuzzMonkey » 05 Jul 2016, 08:34

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???
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Re: Bogner La Grange

Postby J0K3RX » 06 Jul 2016, 02:49

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:
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Re: Bogner La Grange

Postby orcl2 » 27 Jul 2016, 20:25

Hi guys, nice work by the way, did you have the schem fot this?
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Re: Bogner La Grange

Postby Saruman » 29 Jul 2016, 09:45

to be continued.....
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Re: Bogner La Grange

Postby FuzzMonkey » 30 Jul 2016, 04:36

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.
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Re: Bogner La Grange

Postby Saruman » 01 Aug 2016, 08:53

Рedal work after de-gooping. No problem.
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Re: Bogner La Grange

Postby Saruman » 08 Nov 2016, 08:44

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