RV2
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Posts posted by RV2
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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
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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
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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
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@ 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
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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
Sustainer Ideas
in Electronics Chat
Posted
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