- #1
Matthewkulp
- 2
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Greetings,
I have built a theremin that runs an output to a Velleman Mono 7W Amp. From the amp it then splits 3 ways. 1 to a speaker. The other two run directly to the horizontal and vertical connections of a deflection yoke in a 12V CRT television. This system works. I have sound from the speaker and a circular visualization from the theremin sound wave.
However, I would like to control the horizontal yoke with a pot to change the size of the wave form. Since I am splitting a mono signal after the amp, I have to put the pot after the amp as well.
Here is the amps Datasheet:
* music power output: 7W / 4ohm
* RMS output: 3.5W / 4ohm or 2W / 8ohm
* total harmonic distortion: 0.05% (1W / 1kHz)
* frequency response: 20Hz to 20kHz (-3dB)
* signal/noise ratio: 86dB (A weighted)
* input sensitivity: 40mV / 150Kohm
* overload and short-circuit protected
* supply voltage: 15V DC (8 to 18V DC possible) / 0.5A
* dimensions: 2.2 x 1.4"
Could anyone help me to pick a potentiometer for this task, and maybe explain how to figure that out?
Thank you so much.
Matt
I have built a theremin that runs an output to a Velleman Mono 7W Amp. From the amp it then splits 3 ways. 1 to a speaker. The other two run directly to the horizontal and vertical connections of a deflection yoke in a 12V CRT television. This system works. I have sound from the speaker and a circular visualization from the theremin sound wave.
However, I would like to control the horizontal yoke with a pot to change the size of the wave form. Since I am splitting a mono signal after the amp, I have to put the pot after the amp as well.
Here is the amps Datasheet:
* music power output: 7W / 4ohm
* RMS output: 3.5W / 4ohm or 2W / 8ohm
* total harmonic distortion: 0.05% (1W / 1kHz)
* frequency response: 20Hz to 20kHz (-3dB)
* signal/noise ratio: 86dB (A weighted)
* input sensitivity: 40mV / 150Kohm
* overload and short-circuit protected
* supply voltage: 15V DC (8 to 18V DC possible) / 0.5A
* dimensions: 2.2 x 1.4"
Could anyone help me to pick a potentiometer for this task, and maybe explain how to figure that out?
Thank you so much.
Matt