RV2

Here is a picture of the bottom of the circuit as promised : I prefer the other side Haven't had the time for further testing. Greetz, Randy

About my amp: I didn't have a plan, I just started. First I began with the transistor and the resistors. From there I looked at the Fetzer Ruby scheme to see how I could best place the other parts. Tonight I will make a picture of the bottom of the circuit. Then you will see my chaotic connections uncovered About the costs so far I can give a short overview. The circuit parts are ordered from different shops (internet and local) and I guess I paid 8 euro's. For the driver I bought a steel bar (6x6x1000mm, so a lot more drivers possible ) and 0,2 mm wire for the windings, it cost 4 euro together. Then finally I needed two toggle switches (a dpdt and a 3pdt), these probably are the most expensive parts: 2,50 + 3,00 = 5,50 euro. So all together it will cost you less than 20 euro's for the sustainer! That must be a reason to start for anybody who is still in doubt whether to try this project

OK, I've made some progress. First I soldered the amp, as mentioned with three trimpots. I tried to keep it as small as possible. In the pictures below you can see my amp and my setup. The guitar is a Cort CL200. I bought it on Ebay for projects like this one (don't want to mess with my Fender Jazzmaster). And did it work???... Yes it did! First I tried it with the 5 magnets I had put on the bottom, but that didn't give any sustain. Then I decided to add some more magnets, so the bottom was allmost totaly covered with 10 magnets. And after changing the trimpot settings I finally heard some harmonics and found out that it worked! It is not yet perfect at all, some notes sustain much better than others, but I'm happy so far! I am getting sustain now from the low E string till around the 5th fret on the B string. But even on the lower strings there are some notes that don't seem to sustain like other notes. Also I experienced that some notes react much better in harmonics mode and other notes better in normal mode. So there is enough testing and researching to do I have kinda decided to try to make a driver with a smaller core, as recommended by psw. Greetz, Randy

Hi psw, cool to see my pages on the other forum as well! This weekend I have some time for making the amplifier, so maybe I will also be able to get my guitar sustaining

@ psw: thanks for the reply! and 60 drivers... wow I'm a rookie I haven't had the time to go on with the amp, but I did make some pics of my driver. So feel free to give your comments on it. I received today the rare earth magnets and I will have to try how many are needed. They are very strong for the size (5 x 4 x 1,5 mm). Also I've decided to try to make the amp with 3 trimpots and then try to set it to unity gain, so that I only have to put on the sustainer. But hey.... first have to get it all going

This thread is really superb, very good work! I've read all the 70 pages and decided to give it a try. I have allready made a driver from a 6x6 mm steel core, bobbins from a cd case and 0,2 mm wire. The first time i winded the wire one of the bobbins got loose The second try went very well and I ended up with a nice looking driver with 8,3 Ohm. I've ordered rare earth magnets and the parts needed for the Fetzer-Ruby Amp, but about this amp I got a last question. In the different sustainer setups in this thread you see some setups with one control knob, some with two. In the scheme of the Fetzer-Ruby there are three potmeters, so I was wondering which one you will need to control the sustainer. What I now think is that only the volume pot is necessary, is this correct? I will post some pictures when I am a bit further. Greetz, Randy