- BLG_PIC.png (7.04 KiB) Viewed 13595 times
Bogner - La Grange [traced]
- Intripped
- Cap Cooler
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.
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.
- bajaman
- Old Solderhand
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What is that pic chip for ?
be kind to all animals - especially human beings
- Intripped
- Cap Cooler
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
- 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
- bajaman
- Old Solderhand
Information
- Posts: 4549
- Joined: 26 Jun 2007, 21:18
- Location: New Brighton, Christchurch, NZ
- Has thanked: 595 times
- Been thanked: 2060 times
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
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
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
- rcustoms
- Resistor Ronker
Information
awesome work dude,values please to draw the pcb
- FuzzMonkey
- Breadboard Brother
Try Urban Dictionary maybe???Intripped wrote:i'm Resistor RonkerSaruman wrote:Intripped, you are absolutely right! 15k,10k
...bytheway: what does ronker mean?
- J0K3RX
- Degoop Doctor
FuzzMonkey wrote:Try Urban Dictionary maybe???Intripped wrote:i'm Resistor RonkerSaruman wrote:Intripped, you are absolutely right! 15k,10k
...bytheway: what does ronker mean?
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..
- FuzzMonkey
- Breadboard Brother
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 wrote:to be continued.....