Driving loud speaker with an analog output

[viswa]

Dear all,

              I have been trying to drive a loud speaker using an analog sinusoidal signal from 100 to 10kHz frequency range. I can generate good waveform using USB 6229. But when i apply the signal to loud speaker the signal becomes square waveform and diminishes in amplitude.

I thought this might be due to impedance mismatch. But when i looked at spec sheet of USB 6229, the analog output impedance is 0.1 ohms range. Usually a loud speaker has input voltage of 8 ohms. So i dont think it is the problem with impedance mismacth.

Any suggestions would be greatly appriciated.

[AnalogKid2DigitalMan]

Not an impedance mismatch, but rather the limited current drive capability of the 6229's analog output. You would need an amplifier between the 6229 and the speaker.

-AK2DM

[AB@17]

Hi

I also have same issue

if get amplified,it would be sufficient

[Henrik_Volkers]

Use a voltage divider 10:1 (for the 10V max output of the analog output to bring it down to line level) and a actitve speaker or a standard 'hifi' amplifier ...