@barry
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Excellent build and thanks for sharing.
Love the tidy by using shrink wrap and pot covers.
I think if you throw an Emerald Ring in there it could become a weapon of the Doom genre. Just tune down to C# or plug in your favorite Baritone and let her rip.
Do me a favor and contact me using the contact me link in the in menu bar on this one.
Mention your forum name, real name and the board name as well as basic issue.
Try the G2 by itself. Not in any loop. Not in series with anything.
Determine if it is a build issue. If there is no noise then try adding just a compressor, no loop or series of pedals.
Obviously a compressor acts very similar to a boost pedal (it boosts the lower output while squashing the higher). If you have noise in the G2 pedal to start with the compressor will amplify it. Then try adding the compressor after the G2. Again no loop or other chains.
Then make a determination if it is the G2, G2 + compressor in tandem or the Helix Loop.
That is fantastic and thanks for sharing.
I love the builds and the artwork.
Can you upload a quality ‘straight on” shot of the Emexar for me?
The SD70’s Scooby theme is awesome.
I can suggest a future build for the Emexar “Ultra” by adding either a Tone TwEQ or Super Tone TwEQ in a single enclosure for some Badass riffing.
As for the SD70s 1N34A clipping diode section you can double up the 1N34As to increase the forward voltage by using the Teepee method. This will require 6 Diodes on the DPDT board or perhaps two 1N34As with a White, Blue or Green LED for asymmetrical clipping. This will get you more in the ballpark volume wise.
Yes, the build requires it.
It is just a tiny cap for noise that I apparently missed adding to the troubleshoot picture.
Build document updated and thanks for pointing it out.
There are many ways to wire but yes you can do it exactly as you see it in the RED Special build document or as you see it here taken from Guide #10 on the Guides page:
This is not a GuitarPCB project or related to GuitarPCB. Therefore I am not familiar with this circuit at all. You would do best to contact them at their site to see what kind of service they can offer you. It is always best to go to the circuit designer for help with support since they would know what is going on better than anyone else.
I am glad you solved it.
That was a proper troubleshoot.
Interestingly I have also had people test parts with that tester that said a part was bad when it was not.
I see it goes both ways in the wrong direction.
I would agree that it is a grounding issue.
I do not think any of the changes matter much.
I would start by re-flowing everything (all pads) which would include bending the pots up and getting under there also. Re-flow the off-board wiring as well and tidy up wherever you see an opportunity.
It appears there is a break in the trace between the (2) 9 volt pads. Not normal but problem there is solved by using the one that is connected.
As for the voltage at 3.5v that should work but I were you I would re-flow and double check all resistor values against the build doc image. I just checked against my board and I am able to do 4.5v which is standard.
Does the Gain section of the SD70’s sound good? If so it likely isn’t an issue. Other than that do my suggestions above.
Thanks for the compliments.
I am glad you like those.
I am always trying to find useful items to add to orders.
I took the liberty of looking up a schematic. If this is the circuit then it does not invert the phase so you can add it to your Buff N Blend loop without needing phase correction.
Be aware that if you ever add another pedal to your loop that may change depending on whether the additional circuit is inverting or non-inverting. You will notice by ear that you lose a lot of bottom end to your sound.
Does the Earthquaker pedal invert the phase? If it does then you cannot use the Buff N Blend without adding an additional single stage circuit like the Stage 3 Booster to correct the phase. You will need to look at the schematic to verify. I stress this up front so you can avoid building a mistake.
The Buff N Blend is designed for putting a circuit for which the phase is known inside the same enclosure with the circuit you want to Blend.
That said you can build Buff N Blend to work exactly as you mentioned in your first post. If it inverts the phase, you will hear it, then just be prepared to add another “single stage circuit” in series with the Tentacle to correct the phase.
Phase makes no difference when running pedals in series straight to a guitar amp. (This is why most people do not consider phase). When introducing a parallel loop such as the Buff N Blend, or an amp with a parallel loop, then phase must be considered. More INFO HERE.
