* Check the model number. The model number is usually located on the back of the organ. It will start with the letters "SO" followed by two digits. The first digit indicates the series of the organ, and the second digit indicates the model within the series. For example, an SO-44 is a Series 4, Model 4 organ.
* Look at the features. Different sonic models have different features. For example, some models have built-in percussion, while others do not. Some models have multiple keyboards, while others have only one.
* Listen to the sound. Each sonic model has its own unique sound. You can listen to recordings of different models online or in person to get a feel for the different sounds.
Here is a table that lists the different Baldwin organ sonic models and their features:
| Model | Series | Number of Keyboards | Built-in Percussion |
|---|---|---|---|
| SO-11 | 1 | 1 | No |
| SO-22 | 2 | 1 | No |
| SO-33 | 3 | 1 | No |
| SO-44 | 4 | 1 | Yes |
| SO-55 | 5 | 2 | Yes |
| SO-66 | 6 | 3 | Yes |
| SO-77 | 7 | 4 | Yes |
| SO-88 | 8 | 5 | Yes |
If you are still not sure which Baldwin organ sonic you have, you can contact Baldwin Organs directly. They will be able to provide you with more information about your organ.