Back again with a Aion corvus

[whomeno]

I got the corvus pcb today. got it done, but it has low volume. you have to max the volume. I used for IC1 4558. For IC2 I tried a ua741 and a tlo71. same thing no chage. This has an option to use IC3 for a dual opamp so I tried a 4558 in IC3. same thing no change.so I probed it. I got good tone going to R8-8.2K, but loose it coming out of the IC2. I will attach the build doc along with pics. the build doc has the schematic in it. I am NOT having a good day. Or dose this pedal behave like this, you have to max the volume?
the link to build doc
https://www.dropbox.com/s/l3x7vvmvbaeerg9/aion-corvus-ehx-big-muff-pi-opamp-documentation.pdf?dl=1

Voltage 9 Volt

4558
1  4.29 V
2  4.31 V
3  4.27 V
4  0 v
5  4.28 v
6  4.37 v
7  4.41 v
8  8.69 v

TLO71
1  .014 v
2  4.74 v
3  4.56 v
4  0 v
5  .014 v
6  4.85 v
7  8.69 v
8  0 v

[Marcos - Munky]

Perhaps does the opamp big muff have a low volume output? I mean, this is the 3rd one you built using different layouts, and all of them have the same low volume issue.

If you take a look at the first build report here (https://aionelectronics.com/build-reports/?project=66), it also says about the low volume: "4558 on IC1 + 741 on IC3 = lacks headroom. I had to turn the volume knob all the way up to try to match my guitar's clean volume."

[whomeno]

That is what i thought also. I have yet to find a loud muff.
Thanks

[Marcos - Munky]

The regular transistor muffs are pretty loud. The same comment on the opamp muff said different opamps gave louder or quieter output volumes, so it's worth to give a try on different opamps.

[whomeno]

I will have to try that.
Thanks

[bushidov]

It would be a slight redesign of the circuit, but you could do what the transistor big muffs do and add a "recovery stage" at the end of the circuit. Essentially adding something similar to an LPB-1 after the pedal.

[antonis]

What Erik said.. 

"Standard" Big Muff Tonestack develops about -13dB signal attenuation resulting into a 1/5^th of that coming out of last gain stage..

[willienillie]

"Aion corvus" is almost a perfect anagram of "coronavirus"

WHAT DID THEY KNOW???

[aion]

"Aion corvus" is almost a perfect anagram of "coronavirus"

WHAT DID THEY KNOW???

Well... there's also one called the Corona which is a little more on point!

[11-90-an]

funny that my schem/ckt notebook's brand is corona...

even before corona...

[willienillie]

(Put my username into the periodic table)

Nathan!

[Marcos - Munky]

(Put my username into the periodic table)

Nathan!

Wow, that was pretty clever! I was guessing how to call 11-90-an, now I know

[duck_arse]

16-52-15-2-7


whomeno - a question, just curious. are you knocking these builds out by the day, or are you working your way through a box-of-shame builds?

[willienillie]

(Put my username into the periodic table)

Nathan!

Wow, that was pretty clever! I was guessing how to call 11-90-an, now I know

We'll have to call him Nathan Jr because we already have a well-established Nathan.  And "Nathan Jr" is from one of my favorite movies.

"Which one did ya get?"

"I don't know, but I think it was Nathan Jr."

[bluebunny]

"Newthan"   

[bushidov]

(Put my username into the periodic table)

Erbium, Iodine, and Potassium?

[duck_arse]

"Newthan"   

10-74-90-an