freestompboxes.org

apollomusicservice

Shrila wrote:Hi zedsnotdead. What kind of transistors you choose to replace MPF4393?

Try with PN4393, NTE469, 2N5457, 2SK170...

apollomusicservice

bajaman wrote:Does anyone know where to purchase those cute spline shaft board mounting pots that AMT use in their pedals? They are smaller than the 16mm diameter pots that are easily sourced!
cheers
bajaman

Something like these
http://www.alibaba.com/product-detail/1 ... 01008.html

apollomusicservice

awesome work apollo Keen to see the finished pedal(s) cheers bajaman ps: I tried running my B2 out of the preamp output into my E2 and then using the cabsim output from the E2 - very smooth! Nice idea, perhaps to make separate outputs for each simulation, and than use these outputs to drive separat...

apollomusicservice

My idea was to put these pcb's into rack case, and then with switch to choose a certain type,
and perhaps make the remote control with foot switches. I also adjusted the width and
height of PCB for 1590BB enclosure. I'll see how this will turn out.

apollomusicservice

Nice job guys. I just finished my PCB boards ready for assembly.

apollomusicservice

pamaz wrote:I'm trying to understand and dowload the code form your website, but I'm having a few difficulties due to the japanese language ( and google translator is not helping that much!) .
Can you please point me to the correct link for downloading the code pls?
Thanks
Paolo

Try this

apollomusicservice

I tried the layout from Storyboardist and I'm having some issues- the input very heavily gated and farty. BUT I can hear the echo from it... The only part replacement I made were the lm7805- I swapped them with some 78L05 I had laying around... but I dont think that could be the problem. What do yo...

apollomusicservice

Check Q5 orientation.

apollomusicservice

Here is my version of this Screamer designed for SMD technology. Pots and switch are on the other side of Pcb, DC jack and input/output jacks are mounted directly on 1590A housing.

apollomusicservice

MINI Tube Screamer guts & schematic

apollomusicservice

If you want to try, how it sounds on higher voltage you can apply voltage up to 15 volts for short time. It allows one characteristic for aluminium electrolytic capacitor called surge voltage. It means that you can apply 15 percent higher voltage over the rating for short time (few minutes).

apollomusicservice

brejna wrote:All boards are sold..

PCB arrived, excellent quality. Brejna, thanks again.

apollomusicservice

modman wrote:

all dead links - anybody in the possibility of re-upping?

apollomusicservice

I downloaded the pdf but it won't open for me... seems corrupt?

Try this file.

apollomusicservice

I just rearranged drawing for a single-layer PCB.
Dimensions are adapted for Hammond 1590BB box and all potentiometers are turned to one side.

apollomusicservice

johnk wrote:I'm pretty sure that Vince is correct that the feedback resistor in the first gain stage is a 1M and not a 500K.
I got mine working but the tone stack isn't all that effective except for the mids control.

You're right. Thank's.

apollomusicservice

You've done a good job. With the help of your Installation sketch I'll try to do wiring diagram for comparison.

apollomusicservice

correction

apollomusicservice

My schematic looks a little different.

apollomusicservice

There is little jumble with these resistors. Proper position is on the picture.

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