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Bogner - La Grange
Posted: 01 Jul 2016, 08:17
by Saruman
- BLG_PIC.png (7.04 KiB) Viewed 13685 times
Re: Bogner La Grange
Posted: 01 Jul 2016, 11:36
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.
Re: Bogner La Grange
Posted: 01 Jul 2016, 13:24
by Saruman
how did you managed to remove that goop?
Im Degoop Doctor
opamp (OPA132) K=1,5. Its boffer.
bs170 as in exampes:
Re: Bogner La Grange
Posted: 01 Jul 2016, 16:11
by Saruman
La Grange is modified Zvex Box Of Rock.
Re: Bogner La Grange
Posted: 01 Jul 2016, 19:17
by fuzzbunny
Bravo!
Re: Bogner La Grange
Posted: 01 Jul 2016, 22:05
by bajaman
What is that pic chip for ?
Re: Bogner La Grange
Posted: 02 Jul 2016, 11:31
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)
- a modified COT50, ala Briggs, with different clipping options, "nature"="blend" and "structure"=fixed value
- a Box Of Rock with some tweaks and options
Re: Bogner La Grange
Posted: 03 Jul 2016, 06:56
by Chugs
Nice work. Is there parts values for the schematic?
Re: Bogner La Grange
Posted: 03 Jul 2016, 07:19
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 ?
Re: Bogner La Grange
Posted: 03 Jul 2016, 10:05
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
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!
15k,10k
Re: Bogner La Grange
Posted: 03 Jul 2016, 20:23
by rcustoms
awesome work dude,values please to draw the pcb
Re: Bogner La Grange
Posted: 04 Jul 2016, 11:27
by Intripped
Saruman wrote:Intripped, you are absolutely right!
15k,10k
i'm Resistor Ronker
...bytheway: what does ronker mean?
Re: Bogner La Grange
Posted: 04 Jul 2016, 15:34
by Saruman
I do not know, I'm not an еnglish speaker!
Re: Bogner La Grange
Posted: 05 Jul 2016, 07:34
by FuzzMonkey
Intripped wrote:Saruman wrote:Intripped, you are absolutely right!
15k,10k
i'm Resistor Ronker
...bytheway: what does ronker mean?
Try Urban Dictionary maybe???
Re: Bogner La Grange
Posted: 06 Jul 2016, 01:49
by J0K3RX
FuzzMonkey wrote:Intripped wrote:Saruman wrote:Intripped, you are absolutely right!
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..
Re: Bogner La Grange
Posted: 27 Jul 2016, 19:25
by orcl2
Hi guys, nice work by the way, did you have the schem fot this?
Re: Bogner La Grange
Posted: 29 Jul 2016, 08:45
by Saruman
to be continued.....
Re: Bogner La Grange
Posted: 30 Jul 2016, 03:36
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.
Re: Bogner La Grange
Posted: 01 Aug 2016, 07:53
by Saruman
Рedal work after de-gooping. No problem.
Re: Bogner La Grange
Posted: 08 Nov 2016, 07:44
by Saruman