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Messages - SirEgno

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1
Open Discussion / Re: Amp ohm mismatch
« on: August 27, 2020, 06:54:23 AM »
The rule is different for tube amp (or with output transformer in general) or solid state (or OTL - output transformer less):

1.Tube/OT - impedante must be the same for head and cabinet;
2.SS/OTL - the cabinet impedance must be same or higher than the head impedance.

2
Build Reports / Re: Coda Effects Black Hole
« on: June 17, 2020, 12:43:20 AM »
Looking at the original schematic the 4th triode is (I don't know the correct word here... biased?) at the same way. 100k resistor on the cathode. maybe it's a coincidence...
My question is about the "anode" trimmers. is 20k enough? I've alway seen 100k trimmers on fet drain.

Now the real important thing. This build is awesome! The graphic gives a 3d look at the pedal.

3
General Questions / Re: Bass compressor recommendations?
« on: June 07, 2020, 03:16:09 PM »
I use the afterlife in my pedalboard as effect. It's compact ad do the job.

4
Build Reports / Re: MEAT (snack shack)
« on: June 06, 2020, 02:02:49 AM »
Very nice. I like the shocking pink.
I have a bike of this color.

5
So, 24*2.8=67.2. That's why I also bought a 48v zener diode.

The schematic attached should be fine. But I think I have to add a resistor on the red circle. right?

Thank you very much for helping me!

6
Open Discussion / Re: What I was thinking?
« on: May 28, 2020, 12:43:40 PM »
you're right!
my knowledge is regressing  :-\
Are there some advantages using a full bridge rectifier?
like this:


Doubling the voltage the current is halved, right? the transformer is 0,5VA (2x0,25). so the current should be about 20mA?

7
some years ago I started to build a mic preamp with phantom power supply.
I bought a 2x15v transformer as main power and for the phantom a... 2x12v transformer.
What strange drugs did I take to get this idea? How can I get 48v from 2x12v transformer?

I bought also every component to build this project and there is no charge pump or something similar.
Only a 48v zener diode.

8
Tech Help - Projects Page / Re: Freekout rotoring sound
« on: May 27, 2020, 03:03:14 AM »
You could try these steps.
-Check the value of T1.
-Remove all chips except the charge pump, then check the voltage.
-If you can try another 1054.
-check solder join on the -15v trace.

9
Open Discussion / Re: Modding a timmy (anything, really) for bass?
« on: May 13, 2020, 01:13:31 AM »
this is what I was talking about:

and this is how it sounds:

The switch is on C8, changes between 33n and 100n.


10
Open Discussion / Re: Modding a timmy (anything, really) for bass?
« on: May 12, 2020, 09:12:13 AM »
I don't like overdrive with blend, instead you could use a cap in series with the clipping diodes and a potentiometer as variable resistor.
In a tube screamer I used 47n cap and a 50kB pot.

Better for me is a SHO with hard clipping stage and same capacitor/pot solution. (and also a volume pot).


11
Open Discussion / Re: The Official Coronavirus Discussion
« on: May 07, 2020, 10:00:49 AM »
Some of you might be too young to remember, but they used to have these places called "barber shops" that would help you with grooming.  I'm hoping they will get trendy with hipsters and come back some day.  ::)

Last time I got a haircut was probably over 20 years ago. So there!



12
General Questions / Re: Retrograde - less ferocious?
« on: April 16, 2020, 01:22:34 AM »
You could put a 100k pot as variable resistor in series with the input.

13
Build Reports / Re: Pedalboard pics megathread
« on: April 01, 2020, 02:59:43 AM »
This is my last version.

the first is an empty box to power my bass guitar, so I don't need battery.
tuner into zvex machine clone, into ditto (I use it to test my effect), into an fet overdrive, into a mountainking megalith, into a bigmuff, into a CE-2, into an electric mistress, into a delay.
A lot of effect are missing, but at this moment I use only these.
It started in 2008 and changed about once a month.
Now I'm planning a modular cornish style pedalboard with programmable looper.
so I won't need enclosure, jacks and footswitches.

14
Open Discussion / Re: The Official Coronavirus Discussion
« on: March 22, 2020, 04:47:19 AM »
Today is a month close in my house. I'm planning a party and you are all invited.

And, starting from today the whole Lombardy (Italy) is more in lockdown. All non-essential activities must close, nobody can leave house except for essential shopping and in case of emergency.
honestly I don't see the end. I think that we won't have summer holidays.
IMHO the government moved too late.

15
Open Discussion / Re: The Official Coronavirus Discussion
« on: March 13, 2020, 08:52:59 AM »
Hey, there is a new positive side. If we are all "working" at home then we can bullshit all day and build pedals, right?

yes, just today my last MBP order was delivered!
at the office...

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