Messages

Hello - quite some time since my last post. Just wanted to let everybody know, that there is a new version (4.0) available:  https://drive.google.com/drive/folders/1lKUyPn5B468xeWaGFZhAdqgFoZD4oujD?usp=sharing.

Background: I use my Eoo3 to control an HX Stomp. With the latest Line 6 release (3.11), they changed something in the midi implementation which revealed a bug in my implementation (program changes occasionally failed). It's fixed now.

Sorry to revive the zombie. Matthias, or if anyone knows, is the choice of transistors is critical? Would any high hfe or medium BJT do? Is hfe (or any other particular characteristic) important? I have 5c546, BC550, 2N5088, 2N5089, 2N3904. MPSA18... Just not BC547C.

It should not be critical, 2N3904 should work, just check the pinout. Found here: https://www.quora.com/What-are-substitutes-for-BC547-transistors#:~:text=2N2222%20is%20the%20most%20common%20and%20excellent%20substitute%20for%20BC547.&text=The%20only%20minor%20changes%20are,%2C%202N4401%2C%20BC337%2C%20etc.

Let us all know, if it works.

Here we go:

Starting off with my standard sound completely dry: Fender Sambora Strat into this "Anne Circuit" into a 1x12" Marshall Cabinet loaded with a Jensen Jet C12 Electric Lightning [8 Ohm] speaker. All that captured with a Superlux PRA 628 MK II straight into a an IK Multimedia IRIG into an Iphone (no computer, no compressors or anything). I think there is some digital overdrive added on the recording, forgive me. You get the idea anyway.

Playing with tone control, adding reverb, using a Zendrive first and than changing to a Queen of Bone afterwards. Nothing else in the circuit, even not, if it's seen in the picture (no LAB Preamp, no Delay, no Tremolo).

Showing off the guitar at the very end. Enjoy!

I will try to set something up over the next days.

Enclosure painted and labelled. Sounds Better than it looks.

You should keep the name: "Anne the Layout"

Yes... Bloody German Autocorrect.

Here is everything in one PDF, including the BOM, Pitures and the build notes from this thread.

https://drive.google.com/file/d/1BVvzoLJPlCQG_DycDLihTPnHhYoCmCXr/view?usp=sharing

I'd be up for a board.  How many watts do those things generally put out?

The spec sheet (https://www.mouser.de/datasheet/2/389/cd00001560-1795812.pdf) says 7 Watt. On a 1x12" speaker in a living room, you will have it on 10´o´clock (1/3 of max). I´d say it´s loud enough for an acoustic band with vocals and so, but maybe not for you next slayer rehearsal.

Here we go:




Some more build notes, if somebody goes for a similar approach: C9 (220 uF) should better be lying, not standing for a 1590b. I had one (!) of these very low profile caps here, all the others would have been too high! I had to replace it at assembly time when the pots were already mounted. Now you know, why one of the film caps next to C6 has burn marks ;-)

Use an INSULATED output jack! Shield of the output is not GND!

As said above: Bending and mounting the TDA is a bit tricky.

Yes, I Made the Board. I will Share the circuit Anne the Layout when I'm Back in my Computer.

No... I checked it after a while of playing and could still Touch it... It's Not gering too hot, seriously.

I was looking for a versatile, yet simple pedalboard amp. This one uses a TDA7266M IC and a simplified ROG Tonemender as a preamp / tone stack. Controls are Treble (bottom right), Mid (bottom left), Bass (top left) and Volume (top right). The tiny hole below the controls can be used to contol the overall preamp volume (there's a trim pot below that). The thing runs on 12 volts, but 9 volts work as well if enough current can be provided by the power supply.

Soundwise, I could not be more happy - the tonestack is effective, the overall volume is way to loud to practice.

All that in a 1590B package with top mounted jacks.




I had to bend the TDA7266M to fit in the box, which I did before soldering it on the pcb. I put a little piece of wood between the pin rows, put it in a vice and bent the plastic part back. Unfortunately, the footprint for the TDA from the internet had too tiny holes to push the pins through. They went in, but not through. Not a big deal.

I have a few PCBs left and can provide a BOM and even a drill template. PM me, if you are interested.

Get a board for just the postage :-)

It runs on 9 Volts. One battery will last forever (it's completely off when the trigger is not pressed). However, there are tiny boards with micro usb jacks and voltage converters on it, so we can turn any old cell phone battery into a rechargable 9 Volt (or whatever) source, which can be charged with Standard (5v) usb chargers. Pretty cool stuff. I got that stuff here and will explore that next (Not for the Ray Gun, but maybe other pedals)

Just a quick one... need to practice how to use it properly.

And here is a detail shot of the PCB. I have four left and I would give them away for free (except for the postage). The only condition is, that you have to show that you built it. PM me, if you are interested.