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Datashwet 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. In most cases it didn’t seem to make a whole lot of difference. So it looks like I may only need one transistor on the post amp board which is the 2N as the other two on that board form a turn on delay that mutes the audio while the rest of the organ comes up.

Books Support This Site: Transistor substitutes update Posted: Which section do you need to see? Given these transistors just amplify the audio dztasheet I am thinking any suitable sub will work ok. I found a suitable sub for the 2N Transistor substitutes 2N sub found.

Users browsing this forum: I will need to do a test to see if the gain is unity 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 datahseet the emitter of the last transistor on the board to allow the clean signal to pass through.

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Page 3 of 3. If I wanted to do away with the reverb board completely how could Adtasheet derive the 28Vdc?

It is the 2NA and I happened to find some in my stash. Makes it harder to find out why the 16′ bass isn’t working as I was hoping it was a bad transistor.

Small Signal Transistors

Jan Tue 05, 2: Could the 1 volt increase just be what the normal signal level was when the organ was new? Watch out for the fact that those have different pinouts! Can you scan that section to share? I’ll post the picture of the schematic in the main restoration topic viewtopic. Previous topic Next topic. Oddly enough it doesn’t seem to affect anything and honestly I think the reverb is better now, but that datashet is never used.

GESS 2N Series Datasheets. 2N, 2N, 2N Datasheet.

Also if I still have some noise I will have to replace the 2N transistors in the solo and accomp mixing preamps and the complex voice preamp. Transistor substitutes 2N sub found Posted: What brand of organ is this? The only issue I saw when testing the board at work was that there was a 1 2n225 increase in signal voltage out of the second 2N stage right after the input stage when I used the 2NA transistor.

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May Mon 09, 4: 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.

After a ,long while I decided to tackle the noise issue. I used to work on organs quite a bit, years ago.

2N2925 Datasheet, Equivalent, Cross Reference Search

How much difference would that make if I just replaced all the 2N with the 2N? Baldwin liked to use those 2Ns, mostly “green” but occasionally “orange” as well. Dec Mon 31, 3: May Thu 26, 6: Looks like perhaps I could use a 2N 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. This is a Conn model organ. Just looked and I can bypass the reverb board far as the audio signal is daatasheet.

Should be 2NA not 2NA The background noise is almost gone after replacing the 2N transistors on the reverb board. What I wonder is this. Jan Tue 05, 4: PDF 2N data http: Made a mistake for the transistor number.

Anything related to the above.