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Made a mistake for the transistor number. What I wonder is this. Transistor substitutes 2N sub found Posted: Jan Tue 05, 2n2952 May Mon 09, 4: Previous topic Next topic. If I wanted to do away with the reverb board completely how could I derive the 28Vdc? This is a Conn model organ.

2N (Micro Electronics) – PNP SILICON TRANSITOR

I found a suitable sub for the 2N Mouser don’t know when they will get the MPS back in stock, but a NTE is a suitable sub and since this is just used to regulate the rod bias I feel comfortable in using that one. The only issue I saw when testing the board at work was that there was a 1 volt increase in signal voltage out of the second 2N stage right after the input stage when I used the 2NA transistor.


Transistor substitutes update Posted: Just looked and I can bypass the reverb board far as the audio signal is concerned.

Baldwin liked to use those 2Ns, mostly “green” but occasionally “orange” as well.

2N2925 Datasheet PDF

Anything related to the above. Given these transistors just amplify the audio signal I am thinking any suitable sub will work ok. Also if I still have some noise Dafasheet will have to replace the 2N transistors in the solo and accomp mixing preamps and the complex voice preamp.

Watch out for the fact that those have different pinouts! Looks like perhaps I could use a 2N Can you scan that section to share?

Jan Tue 05, 2: In most cases it didn’t seem to make a whole lot of difference. PDF 2N data http: It is the 2NA and I happened to find some in my stash.

Oddly enough it doesn’t seem to affect anything and honestly I think the reverb is better now, but that function is never used. What brand of organ is this?

I used to 2n225 on organs quite a bit, years ago. I can check it as the output of the reverb amp that drives the reverb tank has a measurement point where a DB reading is listed.

(Datasheet) 2N pdf – PNP SILICON TRANSITOR (1-page)

datahseet May Thu 26, 6: Page 3 of 3. After a ,long while I decided to tackle the noise issue. How much difference would that make if I just replaced all the 2N with the 2N? Transistor substitutes 2N sub found. I’ll post the picture of the schematic in the main restoration topic viewtopic. Could the 1 volt increase just 2n295 what the normal signal level was when the organ was new? Dec Mon 31, 3: Users browsing this forum: I will need to do a test to see if the gain is dataxheet or very close to unity as the reverb board sends the signal through one transistor and takes t he signal from the emitter and applies it to the emitter of the last transistor on the board to allow the clean signal to pass through.


Books Support This Site: Makes it harder to find out why the datasheeet bass isn’t working as I was hoping it was a bad transistor. Still have a little noise that changes with the expression pedal setting which is after the post amp board so I will replace the three transistors on it for good measure.